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Kaon LT Meetings » History » Version 716

Garth Huber, 03/02/2024 10:30 AM

1 116 Richard Trotta
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2 1 Richard Trotta
3 537 Garth Huber
h1. *KaonLT/PionLT Weekly Meetings*
4 1 Richard Trotta
5 293 Garth Huber
KaonLT/PionLT collaboration analysis meetings. Please add your talk to the meeting ahead of time. Add the newest meeting to the top of the list!
6 262 Richard Trotta
7 645 Vijay Kumar
---
8 284 Vijay Kumar
9 685 Abdennacer Hamdi
h2. 2024 Meetings
10 684 Abdennacer Hamdi
11
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12
13 713 Vijay Kumar
h3. February 29, 2024
14 1 Richard Trotta
15 715 Garth Huber
* Garth's Notes attachment:mtg_24feb29.txt
16 714 Richard Trotta
* Richard
17
** attachment:KaonLTMeeting2_29_24.pdf
18
** Issue with iteration script where cross section error decreases with each iteration. Still being investigated
19
** Unseparated cross-section plots are coming along; still work to be done on improving them.
20
** Interesting sigL/T vs t behavior with lower W values (very tentative)
21 713 Vijay Kumar
* Vijay 
22 716 Garth Huber
** I found an interesting plot of pion and kaon form factors at high Q2 from lattice QCD in the ICTS workshop. The speaker of the talk was Swagato Mukherjee (BNL).  
23 713 Vijay Kumar
 attachment:Lattice_form_factor.pdf
24
25
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26
27 711 Richard Trotta
h3. February 22, 2024
28
29 712 Garth Huber
* Garth's Notes attachment:mtg_24feb22.txt
30 711 Richard Trotta
* Richard
31
** attachment:KaonLTMeeting2_22_24.pdf
32
** Model cross-sections were compared for most of the Q2s. There were several iterations which included a +0.2 term to the t-dependence of sigL. sigT now used the model from Tanja's "global analysis":https://journals.aps.org/prc/pdf/10.1103/PhysRevC.85.018202 which is coming along. Pion subtraction still needs to be incorporated and things should improve further from there.
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35
36 704 Richard Trotta
h3. February 15, 2024
37
38 705 Garth Huber
* Garth's Notes attachment:mtg_24feb15.txt
39 707 Garth Huber
* Garth's GitHub meeting Notes attachment:GitHub_mtg_24feb14.txt
40 704 Richard Trotta
* Richard
41
** attachment:KaonLTMeeting2_15_24.pdf attachment:dsig_totstaterror_calc.pdf
42
** Properly Calculated Statistical Uncertainties
43
*** Ali and I went through and properly implemented statistical uncertainties (double-checked with Garth on Monday). This included updating HMS cerenkov and calorimeter efficiencies that needed to use a "golden singles run" to avoid contamination. A bug in the ratio per bin was fixed so that proper average ratio per bins were found.
44
** SIMC Aerogel/HGCer geometric cuts were implemented.
45
** Particle Subtraction Script was updated. Just need pion samples from Ali.
46
** Beginning Unsep-xsect Systematic Studies
47
** Continued issues with generating new parameterization
48
*** Unsep xsect fits are starting to look good, but the script to generate improved parameterization generates insane fits. Likely a change to the model is needed. In particular, sigT will need adjustments.
49 708 Alicia Postuma
* Alicia
50
** Summary of next steps in asymmetry analysis
51
** Discussion of missing mass using delta correction: unable to reproduce hcana MMpi - learned that this is expected. Will implement a version of Richard's code from recon_hcana 
52
** Exploring -t dependence of different data and simc files
53
** Slides: attachment:Asymmetry_Postuma_2024-1.pdf
54 704 Richard Trotta
55 709 Ali Usman
* Ali
56
** Update on the SIMC resolution study for Kaon-LT 10.6 GeV data.
57
** SIMC SHMS DC resolution was tunned to have better agreement b/w data nnd MC. A large resolution multiplication factor of 9 is used. This will hopefully decrease with improvement in data resolution.
58
** SIMC HMS DC resolution (suggested by Dave G.) doesn't make a huge difference.
59 710 Ali Usman
** The resolution of MC looked worse than data after t-bining. This will be improved with a lower multiplication factor.
60 709 Ali Usman
** attachment:KaonLT_Meeting_Feb_15_2024.pdf
61
62 704 Richard Trotta
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63
64 702 Richard Trotta
h3. February 8, 2024
65
66 703 Garth Huber
* Garth's Notes attachment:mtg_24feb08.txt
67 702 Richard Trotta
* Richard
68
** attachment:KaonLTMeeting2_8_24.pdf
69
** SIMC Weight
70
*** In order to get Ydata/Ysimc to be even close to unity I needed to divide the SIMC weight by 10^6. I was applying the weight for the histograms but not binned data. 
71
** SIMC MM
72
*** The long radiative tail from simc MM has mostly been resolved by using the correct decay length and properly recalculating the MM using recon_hcana.
73
** MM PID Analysis
74
*** Played around with MM cuts to see PID of leak through/higher K+ channels.
75
*** Increasing aerogel cut from aero > 3.0 to > 4.5 should resolve some of the issues, but more probably needs to be done.
76
** MM cut: Yield Comparison
77
*** Using an MM cut of 1.10 < MM < 1.18 produced shockingly consistent yields for Q2=2.115
78
79
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80
81 700 Richard Trotta
h3. February 1, 2024
82
83 701 Garth Huber
* Garth's Notes attachment:mtg_24feb01.txt
84 700 Richard Trotta
* Richard
85
** attachment:KaonLTMeeting2_1_24.pdf
86
** Dave’s Delta Adjustments
87
*** Dave's adjustment to HMS delta to correct for the hsxpfp correlation is implimented.
88
** The weight iteration script is working, but there is an issue with either the SIMC weight or unit charge which is causing me to include a 10^-6 factor in the SIMC weight which messes up the rest of the iteration scripts.
89
90
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91
92 696 Richard Trotta
h3. January 25, 2024
93
94 697 Garth Huber
* Garth/Richard Notes attachment:mtg_24jan25.txt
95 696 Richard Trotta
* Richard
96
** attachment:KaonLTMeeting1_24_24.pdf
97
** Issues with dummy runs
98
*** The dtype error for some dummy runs was caused by empty trees when applying the CT cuts.
99
*** The source of these fails cuts was because the CT offset applied at the replay level was skipped for these runs and thus the CT peak was not where the cut expected.
100
** Weird t-distribution
101
*** Multiple peaks seen in the t-distribution were caused by various particle leakthrough.
102
*** This was cleaned up a bit by implimenting a HMS cer cut > 1.5, but there are still significant particles that need to be cleaned up.
103
** Fixed binning issue
104
*** Issue with the binning script was causing many average kin per bin values to be zero. 
105
*** The scripts were completely rewritten and things look very nice now.
106
** Separated Xsects Script
107
*** Finished debugging the script that separates the cross section. 
108
*** The binning issue was hiding other FORTRAN related issues, in particular, with the input files that are generated.
109
** SIMC MM
110
*** Very broad and long tail on kaon MM generated by SIMC. Still under investigation.
111
** SIMC High Q2
112
*** There were negative MM and other variables being generated by SIMC for high Q2 settings.
113
*** Likely caused by sigT going negative. By setting some of sigT's parameterization to zero, the issue should be resolved. Still under investigation.
114 698 Garth Huber
* Dave
115
** HMS delta-hsxpfp correction for KaonLT data 
116
** attachment:DG_24jan25_hms_hsxpfp.pdf
117 699 Garth Huber
118 696 Richard Trotta
---
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120 1 Richard Trotta
h3. January 11, 2024
121
122 690 Garth Huber
* Garth's Notes attachment:mtg_24jan11.txt
123 694 Garth Huber
* Garth's GitHub meeting Notes  attachment:GitHub_mtg_24jan10.txt
124 1 Richard Trotta
* Richard
125
** attachment:D1_2024WinterHallCTalk.pdf
126
** Most bad runs (i.e. those replays/analysis files that failed for various regions) for Q2=2.1 have been properly run. There are still a few outstanding runs that need to be further investigated.
127
** Equations for the xsect iteration script have been properly adjusted to match those found in the fortran script of SIMC (physics_iterate.f).
128
** Testing with Q2=2.1 is underway with a minor bug with efficiency calculation that needs to be resolved. Once this is done, this setting will test the xsects iteration and separated xsects scripts.
129 692 Garth Huber
* Dave 
130 695 Garth Huber
** HMS delta-hsxpfp correction for P_HMS=5.292GeV/c  attachment:DG_24jan11_hms_hsxpfp.pptx attachment:DG_24jan11_hms_hsxpfp.pdf
131 689 Richard Trotta
132
---
133
134
h3. January 4, 2024
135
136 693 Garth Huber
* Garth's Notes attachment:mtg_24jan04.txt
137 689 Richard Trotta
* Nacer: beta SHMS calibration attachment:20240104_kaonLT_nacer.pdf
138 688 Richard Trotta
139
---
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141 683 Garth Huber
h2. 2023 Meetings
142
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---
144
145 678 Vijay Kumar
h3. December 21, 2023
146 666 Vijay Kumar
147 681 Garth Huber
* Garth's Notes attachment:mtg_23dec21.txt
148 680 Richard Trotta
* Richard
149
** attachment:FinalHeepOffsets_v3.pdf
150
*** Updated heep plots without HGCer cuts, very small change (order of ~0.1 MeV). Also updated with almost final efficiencies (missing Hodo uncern).
151
** attachment:10p6_Prod_2023_12_18.pdf attachment:8p2_Prod_2023_12_18.pdf attachment:6p2_Prod_2023_12_18.pdf attachment:4p9_Prod_2023_12_18.pdf attachment:3p8_Prod_2023_12_18.pdf
152
*** Plots of efficiencies per energy.
153
** attachment:heep_yield.pdf
154 682 Vijay Kumar
*** Heep yield plots without uncertainty. Statistical uncertainty is done, but systematic needs to be finished.
155 677 Vijay Kumar
* Vijay (updated on Dec 27, 2023 (Heep plot))
156 679 Vijay Kumar
** The final summary of the lumi and elastic studies in summer 2019 data. attachment:PionLT_Smmer19_Lumi_elastic_Studies_Dec21_2023.pdf
157 677 Vijay Kumar
** Next Plan: Physics analysis (LT separation) for Q2 = 0.38 GeV2 in the summer 2019 data.
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160
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h3. December 14, 2023
162
163 675 Garth Huber
* Garth's Notes attachment:mtg_23dec14.txt
164 666 Vijay Kumar
* Vijay
165
** The summary of lumi and elastic studies in summer 2019 data.
166
** Carbon Relative Yield: shows a flat line with the -0.243/100uA% slope.
167
** LH2 Relative Yield: shows a slope of -5.06/100uA%.
168
** Average Elastic Cross-Section: determined to 0.9915+-0.0136. 
169 669 Vijay Kumar
** I've compared the study with previous ones. attachment:PionLT_Smmer19_Lumi_elastic_Studies.pdf
170 672 Vijay Kumar
** Next plan: Replay the physics data with determined offsets for the physics analysis. 
171 676 Garth Huber
* Nacer: beta SHMS calibration attachment:20231214_kaonLT_nacer.pdf
172 670 Vijay Kumar
173 666 Vijay Kumar
---
174
175 662 Richard Trotta
h3. December 7, 2023
176
177 665 Garth Huber
* Garth/Nacer Notes attachment:mtg_23dec07.txt
178 662 Richard Trotta
* Richard
179
** attachment:FinalHeepOffsets_v2.pdf
180 664 Richard Trotta
** No Offsets: "10p6":https://redmine.jlab.org/attachments/2266 "8p2":https://redmine.jlab.org/attachments/2262 "6p2":https://redmine.jlab.org/attachments/2263 "4p9":https://redmine.jlab.org/attachments/2264 "3p8":https://redmine.jlab.org/attachments/2265
181
** Offsets: "10p6":https://redmine.jlab.org/attachments/2261 "8p2":https://redmine.jlab.org/attachments/2257 "6p2":https://redmine.jlab.org/attachments/2258 "4p9":https://redmine.jlab.org/attachments/2259 "3p8":https://redmine.jlab.org/attachments/2260
182 663 Richard Trotta
** There was an oversight in the BPM params and they were not pushed to the proper git repo. The offsets had to be redone and the new final offsets are implimented.
183
** Full Replay Pass 3 is underway.
184 662 Richard Trotta
185
---
186
187 657 Nathan Heinrich
h3. November 30, 2023
188
189 661 Garth Huber
* Garth/Nacer Notes attachment:mtg_23nov30.txt
190 657 Nathan Heinrich
* Nathan
191
** Update on Coin Reference time cuts: attachment:RefTimes_Update_2023-11-30.pdf
192 658 Richard Trotta
** Cuts decided, quality checks on data and implementation to be done
193
* Richard
194 660 Richard Trotta
** attachment:KaonLT_FinalHeepOffsets.pdf
195 658 Richard Trotta
** Finalized KaonLT Offsets (including OOP)
196
** In the process of including new offsets in a new replay batch. Should be finished by the end of the weekend.
197 657 Nathan Heinrich
198
---
199
200 644 Ali Usman
h3. November 16, 2023
201 647 Vijay Kumar
202 653 Garth Huber
* Garth/Nacer Notes attachment:mtg_23nov16.txt
203 644 Ali Usman
* Ali
204
** attachment:KaonLT_Meeting_Nov_16_2023.pdf
205
** CoinTime / Beta Leakage Study is now finished. Mark's suggestion to change ptof_tolerance variable from 100 to 2 has fixed the bad beta events. The efficiency for 10.6 and 6.2 / 8.2 GeV Heep dta is almost identical. No need to correct for bad beta / CoinTime events.
206 648 Richard Trotta
* Richard
207
** attachment:KaonLTMeeting11_16_23.pdf
208
** Fixing the SHMS momentum offset and playing around with some decent offsets for all energies besides 10p6. Final numbers are being determined.
209 649 Vijay Kumar
* Vijay
210
** The 'Out of Plane offset' for the summer 2019 data has been comprehensively examined and verified. 
211
** It has proven to be highly effective in addressing the pmy variables of the summer 2019 dataset. attachment:Heep_pmy_summer19_offset.pdf
212 650 Vijay Kumar
213 644 Ali Usman
---
214 646 Vijay Kumar
215 640 Garth Huber
h3. November 9, 2003
216
217
* Garth/Nacer Notes attachment:mtg_23nov09.txt
218
* Richard
219 641 Richard Trotta
** attachment:KaonLTMeeting11_9_23.pdf
220
** A variety of heep offsets were applied, provided by Garth's global results. It is shown that adapting the 5 beam energy global offsets with varying the SHMS momentum offset allows for the best emiss peak positions.
221
** OOP offsets are also looked at, but there is an obvious issue with their implementation that needs to be resolved.
222 654 Garth Huber
* Garth
223 655 Garth Huber
** PMY fit to determine OOP offsets, for 3 different sets of beam energies attachment:offset_pmy2c.pdf
224 656 Garth Huber
225 640 Garth Huber
---
226
227 636 Richard Trotta
h3. November 2, 2023
228
229 638 Garth Huber
* Garth/Nacer Notes attachment:mtg_23nov02.txt
230 636 Richard Trotta
* Richard
231 637 Richard Trotta
** attachment:KaonLTMeeting11_2_23.pdf
232 636 Richard Trotta
** Garth's global high energy offsets were applied. There is a shift in emiss with dpp offset of -0.1%
233
234
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235
236 642 Garth Huber
h3. October 24, 2023
237
238 643 Garth Huber
* Richard/Tanja/Dave Notes attachment:mtg_23oct24.txt
239 639 Garth Huber
240
---
241
242 627 Vijay Kumar
h3. October 17, 2023
243
244 635 Garth Huber
* Garth/Nacer Notes attachment:mtg_23oct17.txt
245 631 Richard Trotta
* Richard
246 632 Richard Trotta
** "kaon_xsects_Q2p1W2p95":https://redmine.jlab.org/attachments/2210
247
** By setting the parameters for the interference terms to zero, the spike in data between 220-300 deg has been removed, and all ratios are within ~10. The weight iteration script is being debugged and thoroughly checked.
248 627 Vijay Kumar
* Vijay
249
** The testing of global fitting parameters (offsets) for the summer 2019 data (Garth study) has been completed. 
250 630 Vijay Kumar
** It has been determined that employing a single set of offsets for all energies within the summer 2019 dataset does not adequately address all variables.
251 629 Vijay Kumar
** Nonetheless, the W variable exhibits a strong agreement with the SIMC for energies of 2.7 and 4.5 GeV. However, at 3.6 GeV, a slight over-correction is observed.
252 627 Vijay Kumar
** attachment:Vijay_Oct17_23.pdf
253
254
---
255
256 633 Richard Trotta
h3. October 16, 2023
257
258 634 Richard Trotta
* "Notes from Cointime Leakage Meeting":https://redmine.jlab.org/attachments/2211
259 633 Richard Trotta
** Attendance: Alicia P., Ali U., Garth H., Richard T.
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263 623 Richard Trotta
h3. October 10, 2023
264
265 626 Garth Huber
* Garth/Nacer Notes attachment:mtg_23oct10.txt
266 623 Richard Trotta
* Richard
267 624 Richard Trotta
** attachment:KaonLTMeeting10_10_23.pdf
268 625 Richard Trotta
** As expected, the bifurcation seen in the CT vs beta (E=10.6) is almost non-existent when kaon PID cuts are applied. This is likely due to the lower statistics compared to what Alicia showed with pion PID. A correction should be applied regardless which will determined by the pion data.
269 623 Richard Trotta
270
---
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272 620 Richard Trotta
h3. October 3, 2023
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274 622 Garth Huber
* Garth/Nacer/Richard Notes attachment:mtg_23oct03.txt
275 620 Richard Trotta
* Richard
276
** attachment:kaon_xsects_Q2p1W2p95.pdf
277 621 Richard Trotta
** There are some issues with the Right SIMC setting returning zeros, which is part of the cause of the odd values. This is still being debugged, it is unclear if this is a binning or simc issue.
278 622 Garth Huber
* Plots from post-meeting on CoinTime "leakage"
279
** attachment:cointime_mmpi_10p6.pdf
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** attachment:heep_coin_time_10p6.pdf
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** attachment:ctime_vs_beta.pdf
282
** attachment:cointime_beta_10p6.pdf
283 613 Richard Trotta
284
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285
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h3. September 26, 2023
287
288 617 Garth Huber
* Garth/Nacer Notes attachment:mtg_23sep26.txt
289 613 Richard Trotta
* Richard
290
** attachment:kaon_unsep_xsects_Q2p1W2p95.pdf
291
** Fixed issues with the binning. Adapting parameter optimization code for iterating weights of SIMC
292
** Ratio for low eps of 2.1 looks good (all within 0.1-2.0), but high eps is all over the place.
293 614 Garth Huber
* Alicia
294 618 Alicia Postuma
** Explored coin time: interesting feature depends on missing mass
295
** attachment:log_ctime.pdf dark blue: no MM cut, green: loose MM cut, red: tight MM cut
296
** attachment:mmcointime.pdf 2D plot of coin time vs MM
297 613 Richard Trotta
298 491 Vijay Kumar
---
299
300 612 Garth Huber
h3. September 19, 2023
301
302 617 Garth Huber
* Garth/Nacer Notes attachment:mtg_23sep19.txt
303 619 Alicia Postuma
* Alicia
304
** Finalizing asymmetry analysis: three unresolved questions on PID/event selection
305
** attachment:Asymmetry_Postuma_Sep16.pdf
306 612 Garth Huber
307
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308
309 609 Garth Huber
h3. September 12, 2023
310
311 617 Garth Huber
* Garth/Nacer Notes attachment:mtg_23sep12.txt
312 611 Garth Huber
* Follow-up meeting on LTsep procedure attachment:LTsep_mtg_23sep13.txt
313 609 Garth Huber
314
---
315
316 605 Vijay Kumar
h3. September 07, 2023
317
318 616 Garth Huber
* Garth/Nacer Notes attachment:mtg_23sep07.txt
319 1 Richard Trotta
* Vijay
320 606 Garth Huber
** SHMS hodoscope individual bar efficiency (pion) studied (Efficiency vs Run Number and Efficiency vs Coin trigger Rate) for all the production Runs. attachment:Vijay_Sep07_2023.pdf
321
* Richard
322 607 Richard Trotta
** "HMS Current Carbon":https://redmine.jlab.org/attachments/2118
323
** "HMS Current LH2":https://redmine.jlab.org/attachments/2119
324
** Finalized slopes for luminosity analysis from linear regression of HMS electron data from carbon and LH2. Carbon is flat (m0=1.688e-05±4.305e-04) and LH2 has a slope of ~8%+/-2% (m0=-7.899e-04±1.829e-04)
325 608 Alicia Postuma
* Alicia
326
** Preliminary Q2 scan: attachment:Scan_prelim.pdf
327 605 Vijay Kumar
328
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329
330 600 Richard Trotta
h3. August 31, 2023
331
332 603 Garth Huber
* Garth/Nacer Notes attachment:mtg_23aug31.txt
333 600 Richard Trotta
* Richard
334
** attachment:KaonLTMeeting8_31_23.pdf
335 602 Richard Trotta
** "Regression HMS carbon current":https://redmine.jlab.org/attachments/2072
336
** "Regression HMS carbon rate":https://redmine.jlab.org/attachments/2074
337
** "Regression HMS LH2 current":https://redmine.jlab.org/attachments/2071
338
** "Regression HMS LH2 rate":https://redmine.jlab.org/attachments/2073
339
** "Regression SHMS carbon current":https://redmine.jlab.org/attachments/2075
340
** "Regression SHMS carbon rate":https://redmine.jlab.org/attachments/2076
341
** "Regression SHMS LH2 current":https://redmine.jlab.org/attachments/2077
342
** "Regression SHMS LH2 rate":https://redmine.jlab.org/attachments/2078
343 600 Richard Trotta
** Luminosity analysis is finally complete. Results are consistent with Carlos Yero!
344 604 Garth Huber
* Alicia
345 608 Alicia Postuma
** Binning Monte Carlo: attachment:Asymmetry_Postuma_BinMC2.pdf
346 604 Garth Huber
* Garth
347
** In-plane offset global constrained fit attachment:results_summary_23aug28.txt
348
** Out-of-plane offset plot attachment:offset_oop.pdf
349 600 Richard Trotta
350
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351
352 595 Vijay Kumar
h3. August 24, 2023
353
354 599 Garth Huber
* Garth/Nacer Notes attachment:mtg_23aug24.txt
355 595 Vijay Kumar
* Vijay
356 598 Vijay Kumar
** All efficiencies for the PionLT summer 2019 data, that are required for the cross-section study, have been studied. attachment:Vijay_update_Aug24_2023.pdf
357 596 Vijay Kumar
** Starting soon the elastic cross-section study for the finalization.
358 595 Vijay Kumar
359
360
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361
362 591 Garth Huber
h3. August 17, 2023
363
364
* Garth's Notes attachment:mtg_23aug17.txt
365 593 Garth Huber
* Alicia
366 592 Alicia Postuma
** Several updates: pi-delta BSA and binning for pi-neutron analysis
367
** attachment:Asymmetry_Postuma_PiDelta.pdf
368
** attachment:Asymmetry_Postuma_Binning2.pdf
369
** Also discussion of error analysis: will use unsimplified version of asymmetry error.
370 594 Nathan Heinrich
* Nathan
371
** Slides from conlsion of hgcer calibration https://redmine.jlab.org/attachments/2063
372 591 Garth Huber
373
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374
375 589 Richard Trotta
h3. August 10, 2023
376 1 Richard Trotta
377 590 Garth Huber
* Garth's Notes attachment:mtg_23aug10.txt
378 589 Richard Trotta
* Richard
379
** attachment:KaonLTMeeting8_10_23.pdf
380
** t/phi binning of kinematics is looking a bit odd. The procedure is broken down here.
381 592 Alicia Postuma
* Alicia
382
** Working on binning data for pi-neutron asymmetry
383
** attachment:Asymmetry_Postuma_Binning1.pdf
384 589 Richard Trotta
385
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386
387 588 Garth Huber
h3. July 27, 2023
388
389
* Garth's Notes attachment:mtg_23jul27.txt
390
391
---
392
393 581 Vijay Kumar
h3. July 20, 2023
394
395 587 Garth Huber
* Garth's Notes attachment:mtg_23jul20.txt
396 581 Vijay Kumar
* Vijay
397
** The HMS calorimeter efficiency study is completed from all the ‘Heep coin data’ (3 beam energy) of the summer 2019 run period. attachment:Vijay_July20_2023.pdf
398 584 Vijay Kumar
** The final number of this is *{color:green}@0.9979 ± 4.004e-05@*.  
399 585 Richard Trotta
* Richard
400 586 Richard Trotta
** "kaon_FullAnalysis_Q5p5W3p02_lowe":https://redmine.jlab.org/attachments/2028 "kaon_FullAnalysis_Q5p5W3p02_highe_no_hgcer_cut":https://redmine.jlab.org/attachments/2030 "kaon_FullAnalysis_Q5p5W3p02_highe":https://redmine.jlab.org/attachments/2029
401 585 Richard Trotta
** Peter's kaon PID suggestions are implemented, and the samples are almost there. These include aero>4, RF>+/-0.5, hgcer hole cut. Note: these are with just the spring hole cut (for testing). The proper fall hole cut will be added soon.
402 581 Vijay Kumar
403
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404
405 580 Garth Huber
h3. July 13, 2023
406
407
* Garth's Notes attachment:mtg_23jul13.txt
408
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411 577 Garth Huber
h3. July 6, 2023
412
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* Garth's Notes attachment:mtg_23jul06.txt
414 578 Vijay Kumar
* Vijay
415 582 Vijay Kumar
** The HMS Calorimeter efficiency study from all the production data at Q2 = 0.38 GeV. attachment:Vijay_July6_2023.pdf
416 577 Garth Huber
417
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418
419 570 Richard Trotta
h3. June 28, 2023
420
421 573 Garth Huber
* Garth's Notes attachment:mtg_23jun28.txt
422 576 Garth Huber
* Richard's Notes from meeting with Peter attachment:peter_mtg_23jun25.txt
423 572 Vijay Kumar
* Vijay
424
** EDTM Live Time testing for the Lumi study from summer 2019 data is done.
425
** attachment:Vijay_KaonLT_meeting_Jun28_2023.pdf
426 570 Richard Trotta
* Richard
427
** attachment:KaonLTMeeting6_28_23.pdf
428
** Incorporated Peter (and other's) bcm correction. Some things look better, but there are issues with some TLT values, which is throwing yields off. 
429
430
---
431
432 569 Garth Huber
h3. June 22, 2023
433 568 Richard Trotta
434
* Garth's Notes attachment:mtg_23jun22.txt
435 1 Richard Trotta
* Richard
436 570 Richard Trotta
** attachment:KaonLTMeeting6_22_23.pdf
437
** Adjusted aerogel cut for kaons to 3.0 from 1.5 because of a suggestion by Peter. This eliminates a bit more protons that slip through.
438 568 Richard Trotta
439
---
440 562 Richard Trotta
441 574 Garth Huber
h3. June 15, 2023
442
443
* Dave's Notes attachment:mtg_23jun15.txt
444
445
---
446
447 562 Richard Trotta
h3. June 8, 2023
448 1 Richard Trotta
449
* Dave's Notes attachment:mtg_23jun08.txt
450 566 Nathan Heinrich
* Richard
451 565 Garth Huber
** attachment:KaonLTMeeting6_8_23.pdf
452 562 Richard Trotta
** Linear regression for production also includes higher rates (>1kHz) and things still look fine.
453
** LH2 needs cuts to be adjusted, things are pretty off for now. 
454
* Alicia
455
** attachment:Asymmetry_Postuma_Updates_2023.pdf
456 567 Nathan Heinrich
** Errors, models for BSA analysis
457
* Nathan
458
** Finished Noble gas calibration attachment:CalibUpdate_2023-06-15.pdf
459 563 Alicia Postuma
** Uploaded slides from previous update, with a few extra plots that I had 
460 562 Richard Trotta
461
---
462 561 Richard Trotta
463
h3. June 1, 2023
464 564 Garth Huber
465 561 Richard Trotta
* Dave's Notes attachment:mtg_23jun01.txt
466
* Richard
467
** attachment:KaonLTMeeting6_1_23.pdf
468
** Linear regression for coincidence runs were compared to the singles luminosity runs. The slope for the coincidence is approximately an order of magnitude better than the singles.
469
470
---
471 551 Vijay Kumar
472
h3. May 25, 2023
473 555 Garth Huber
474 551 Vijay Kumar
* Garth's Notes attachment:mtg_23may25.txt
475 552 Vijay Kumar
* Vijay
476 553 Vijay Kumar
** HMS Calorimeter efficiency study at Q2 = 0.38 GeV2, for all production and heep coin data. attachment:Vijay_May25_2023.pdf
477 551 Vijay Kumar
** We discussed in our group meeting that it should be ok to take error weighted average of all the heep coin data and then correct the production data. 
478 559 Alicia Postuma
479
* Alicia
480
** Missing mass by bins - added delta: attachment:mm_simcdata2.pdf
481 551 Vijay Kumar
482
---
483 544 Vijay Kumar
484 550 Garth Huber
h3. May 18, 2023
485 549 Garth Huber
486 548 Richard Trotta
* Garth's Notes attachment:mtg_23may18.txt
487
* Ali
488
** Out of Plane offset study from KaonLT Heep Coindata using Tanja's method.
489 544 Vijay Kumar
** attachment:KaonLT_Meeting_May_18.pdf
490
* Vijay
491 546 Vijay Kumar
** Raster checks of the summer 2019 data. attachment:Raster_check_summer19.pdf
492 547 Ali Usman
** I checked the Raster for the summer 2019 data. It looks ok to me. I did not see any slightly tilting issues that Ali saw earlier.
493
** I do not think that we will need to make any changes to the Raster in the summer 2019 data. 
494 548 Richard Trotta
** Please check the attached file and let me know if you have any concerns of the study. 
495
* Richard
496
** attachment:hms_regression_current_carbon.pdf ,attachment:hms_regression_rate_carbon.pdf , attachment:shms_regression_current_carbon.pdf , attachment:shms_regression_rate_carbon.pdf
497 547 Ali Usman
** I did a least square linear regression on all the luminosity data. There is a good consistency between all data settings and even HMS and SHMS.
498 544 Vijay Kumar
499
---
500 538 Vijay Kumar
501
h3. May 11, 2023
502 543 Garth Huber
503 541 Richard Trotta
* Dave's Notes attachment:mtg_23may11.txt
504 539 Richard Trotta
* Richard
505
** attachment:KaonLTMeeting5_11_23.pdf
506 538 Vijay Kumar
** Carlos and I found the error in the HMS scaler rate and slope. I was previously doing some testing of ELREAL vs ELCLEAN and I never reverted my testing from ELCLEAN. Once I changed the variable back to ELREAL, the rates and trends match.
507
* Vijay
508
** HMS Calorimeter efficiency study. attachment:Vijay_May11_2023.pdf
509
** It looks like the efficiency is less from the production data (Q2 = 0.38 GeV2, High e).
510
** I'll take a look at the heep coin data in this run period of the experiment and get the efficiency. 
511 547 Ali Usman
** Hopefully that's number, the efficiency from heep coin data, will be reliable to correct the inefficiency of the detector and correct the data run by run.
512
513
* Ali
514
** Raster Y sign test. Original sign was working fine.
515 1 Richard Trotta
** attachment:KaonLT_Meeting_May_11.pdf
516 558 Alicia Postuma
517
* Alicia
518 560 Alicia Postuma
** Updates on BSA analysis
519 558 Alicia Postuma
** attachment:Asymmetry_Postuma_May1.pdf
520 538 Vijay Kumar
521
---
522 535 Richard Trotta
523
h3. May 4, 2023
524 536 Garth Huber
525 535 Richard Trotta
* Garth's Notes attachment:mtg_23may04.txt
526
* Richard
527
** attachment:KaonLTMeeting5_4_23.pdf
528
** Most of the bad runs have been resolved although there are still a few issues I am sorting out. I also have some plots of the boiling corrections that need to be updated.
529
** I talked with Jacob last week and he checked my luminosity calculations and they seem fine. Carlos and I are meeting tomorrow at 11 am to try and figure out our discrepancies.
530 557 Alicia Postuma
** Found a possible cut issue with the proton peak where cuts were not being properly applied. This is still early in checks.
531
532
* Ali
533
** BPM calibration check. Using new file for Spring 2019 data.
534 559 Alicia Postuma
** attachment:KaonLT_Meeting_May_4.pdf
535
536
* Alicia
537 535 Richard Trotta
** Missing mass by bins - added SIMC: attachment:mm_simcdata1.pdf
538
539
---
540 532 Vijay Kumar
541
h3. April 27, 2023
542 534 Garth Huber
543 532 Vijay Kumar
* Garth/Stephen Notes attachment:mtg_23apr27.txt
544 533 Richard Trotta
* Vijay
545
** Updates of the analysis are attached. attachment:Vijay_Apr27_2023.pdf
546
* Richard
547
** attachment:KaonLTMeeting4_27_23.pdf
548
** There are still issues with the TLT for some carbon lumi runs. Jacob and I are meeting tomorrow to discuss things.
549 532 Vijay Kumar
** Pion subtraction have improved things a lot, but there seems to be issues with the proton subtraction. Adjusted cuts are rerunning and will hopefully help.
550
 
551
---
552 529 Garth Huber
553
h3. April 20, 2023
554
555 530 Nathan Heinrich
* Garth/Stephen Notes attachment:mtg_23apr20.txt
556
* Nathan - Presented updates on the aerogel calibration. attachment:AerogelCalib_2023-04-20.pdf
557 531 Nathan Heinrich
** looks like the calibration has significantly improved the separation between signal and zeros.
558 529 Garth Huber
** for completeness here are all the presentations that Petr gave on the aerogel calibration. attachment:presentation-2020-09-23-kaonlt.pdf attachment:presentation-2020-09-23-kaonlt-summary.pdf
559
560
---
561 523 Ali Usman
562 1 Richard Trotta
h3. April 13, 2023
563 528 Garth Huber
564 524 Vijay Kumar
* Garth's Notes attachment:mtg_23apr13.txt
565
* Vijay
566 523 Ali Usman
** The details of the update are attached here. attachment:Vijay_Apr13_2023.pdf
567
* Ali
568
** Pion PID study for high Q2 KaonLT data.
569
** Spring 2019 data (low e) attachment:KaonLT_Meeting_Apr_13.pdf
570
571
---
572 519 Richard Trotta
573 514 Vijay Kumar
h3. April 6, 2023
574 527 Garth Huber
575 517 Richard Trotta
* Garth/Stephen Notes attachment:mtg_23apr06.txt
576
* Richard
577 518 Richard Trotta
** attachment:KaonLTMeeting4_6_23.pdf
578
** "10p6 c #1":https://redmine.jlab.org/attachments/1841 "10p6 LH2 #1":https://redmine.jlab.org/attachments/1843
579
** "10p6 c #2":https://redmine.jlab.org/attachments/1840 "10p6 LH2 #2":https://redmine.jlab.org/attachments/1844
580
** "10p6 c #3":https://redmine.jlab.org/attachments/1842 "10p6 LH2 #3":https://redmine.jlab.org/attachments/1845
581 517 Richard Trotta
** "8p2 c #1":https://redmine.jlab.org/attachments/1838 "8p2 LH2 #1":https://redmine.jlab.org/attachments/1839
582 521 Richard Trotta
** Luminosity plots are looking pretty good for LH2 and Carbon. There are a few runs with really bad TLT that need to be resolved.
583 517 Richard Trotta
** I still need to meet with Carlos to figure out HMS scaler issue.
584
** In the process of subtracting proton events from MM for kaon to try and clean up the right setting (update next week).
585
586
---
587
588
h3. March 30, 2023
589 515 Garth Huber
590 514 Vijay Kumar
* Garth/Stephen Notes attachment:mtg_23mar30.txt
591
* Vijay
592
** Switched the pion routine in SIMC for the pion cross-section.
593
** Re-ran SIMC to simulate the p(e, e’π+)n reaction for all the settings of Q2 = 0.38 GeV2 data.
594
** More details are in the talk. attachment:Vijay_KaonLT_meeting_Mar30_2023.pdf
595
596
---
597 510 Ali Usman
598
h3. March 23, 2023
599 513 Garth Huber
600
* Garth's Notes attachment:mtg_23mar23.txt
601
* Carlos
602
** relative yields rate dependence
603
https://hallcweb.jlab.org/DocDB/0012/001209/001/rate_dependence_slides_cyero_Mar09_2023.pdf
604
** event types definitions
605 510 Ali Usman
https://hallcweb.jlab.org/DocDB/0012/001208/001/event_type_definitions_COIN_DAQ_cyero_Mar16_2023.pdf
606
* Ali
607 512 Richard Trotta
** Pion PID study for high Q2 data. This update shows Q2 = 2.1, low e (center) setting. attachment:KaonLT_Meeting_Mar_23.pdf
608 511 Richard Trotta
* Richard
609
** attachment:
610
** Carlos and I discussed some oddities in a comparison of our lumi scaler results for the HMS.
611
** "Added quick script to check cuts applied in ltsep python package.":https://github.com/JeffersonLab/UTIL_KAONLT/blob/spring_2022/check_cuts.sh This requires the most update version of the ltsep package, but can be easily downgraded. (just let me know if interested)
612
** Alicia, Ali, and I are meeting tomorrow at 2:30 to discuss the odd right setting peaks.
613 510 Ali Usman
614
---
615 506 Richard Trotta
616
h3. March 16, 2023
617 516 Garth Huber
618 506 Richard Trotta
* Garth/Stephen Notes attachment:mtg_23mar16.txt
619 507 Richard Trotta
* Richard
620 506 Richard Trotta
** attachment:KaonLT_Meeting_3_16_23.pdf
621
** Carlos has been working on the rate dependence issue for the luminosity scans that Casey and I have been seeing. He came to a similar conclusion as me that there will need to be a correction factor that we all agree on that will need to be applied. We are meeting on Monday to discuss things further. "See his slides on the docDB":https://hallcweb.jlab.org/doc-private/ShowDocument?docid=1206
622 509 Nathan Heinrich
** I think I have tracked down the odd issues with right setting that I have been seeing for most energies. I am not sure why, but it seems that something is going wrong with the replays. I tried rerunning them, but the issue has persisted. My initial guess is that it may be an issue with the TDC cuts, since the coin time distributions were looking off previously. 
623
* Nathan
624 506 Richard Trotta
** presented recent updates on the Aerogel calibration: attachment:AerogelCalib_2023-03-16.pdf
625
** will make multiple calibrations based on PMT4+ dependance
626
627 501 Garth Huber
---
628 1 Richard Trotta
629 501 Garth Huber
h3. March 09, 2023
630 513 Garth Huber
631 504 Garth Huber
* Garth/Stephen Notes attachment:mtg_23mar09.txt
632 505 Garth Huber
* Nathan
633 503 Garth Huber
** Presented the an update to the aerogel calibration, including a 3 year old presentation from Petr
634 501 Garth Huber
*** presentation attachment:presentation-2020-09-23-kaonlt-summary.pdf
635
** Also working on the anomalous LD- setting. Things not making sense. Requesting back up.
636
637 1 Richard Trotta
---
638 490 Vijay Kumar
639
h3. March 02, 2023
640 513 Garth Huber
641 494 Richard Trotta
* Garth's Notes attachment:mtg_23mar02.txt
642 495 Richard Trotta
* Richard
643 497 Richard Trotta
** attachment:KaonLTMeeting3_2_23.pdf
644 498 Richard Trotta
** Heep SIMC to hcana script is working for missing momentum and energy variables. "Heep 10p6":https://redmine.jlab.org/attachments/1763 "Heep 8p2":https://redmine.jlab.org/attachments/1759 "Heep 6p2":https://redmine.jlab.org/attachments/1760 "Heep 4p9":https://redmine.jlab.org/attachments/1762 "Heep 3p8":https://redmine.jlab.org/attachments/1761
645 494 Richard Trotta
** Fortran scripts for finding average kinematic values and cross sections is working. "Q2=5.5, W=3.02, high eps":https://redmine.jlab.org/attachments/1767 "Q2=5.5, W=3.02, low eps":https://redmine.jlab.org/attachments/1766
646 490 Vijay Kumar
** My yield ratios are looking a very weird, more investigation is required. "Ratio and xsects for Q2=5.5, W=3.02, low eps":https://redmine.jlab.org/attachments/1765
647
* Vijay
648
** MMpi cut updated.
649
** 8th t-bin adjusted.
650 492 Vijay Kumar
** Events per t-bin calculated for each epsilon setting.
651 490 Vijay Kumar
** Experimental Yield calculation in each bin is done.
652 478 Richard Trotta
** More details of the update are in the slides. attachment:KaonLT_meeting_March02_2023.pdf
653 1 Richard Trotta
654 478 Richard Trotta
---
655 488 Ali Usman
656
h3. Feb 23, 2023
657 513 Garth Huber
658 488 Ali Usman
* Garth/Stephen Notes  attachment:mtg_23feb23.txt
659
* Ali
660
** Update on HMS Cherenkov and Calorimeter efficiency study. attachment:KaonLT_Meeting_Feb_23.pdf
661 1 Richard Trotta
** Looking at wide range of Heep Singles settings from KaonLT data (primarily low e data).
662 488 Ali Usman
663
---
664 486 Vijay Kumar
665
h3. Feb 16, 2023
666 513 Garth Huber
667 484 Vijay Kumar
* Garth/Stephen Notes attachment:mtg_23feb16.txt
668
* Vijay
669
** Updated the diamond cut for Q2 = 0.38 GeV2 data.
670
** t resolution checked from the center setting of SIMC at low epsilon.
671
** Binned the data in t (total 8 bins).
672
** t resolution checked for each t bin too.
673 485 Vijay Kumar
** Working to bin the data in Phi (16 bins).
674 484 Vijay Kumar
** Working to make the Fortran scripts (average_ratios.f, average_kinematics.f & calc_xsect.f) for the summer 2019 data. attachment:KaonLT_meeting_Feb16_2023.pdf
675
676
677
---
678 481 Ali Usman
679
h3. Feb 9, 2023
680 483 Garth Huber
681 481 Ali Usman
* Garth/Stephen Notes attachment:mtg_23feb09.txt
682
* Ali
683
** attachment:KaonLT_Meeting_Feb_09.pdf
684 478 Richard Trotta
** HMS Cerenkov and Calorimeter Study for different kinematics settings.
685
* Richard
686
** attachment:KaonLTMeeting2_9_23.pdf
687 479 Richard Trotta
** Fixed the odd right distribution for Q2=5.5 by applying more strict cointime cuts.
688 326 Garth Huber
** SIMC c++ code is finishing up. It currently just updates pmx, pmy, pmz, pm, and em with the hcana version of calculations. Angles will be the next step once things are finished up.
689 405 Vijay Kumar
690 1 Richard Trotta
---
691 474 Vijay Kumar
692
h3. Feb 2, 2023
693 476 Garth Huber
694 475 Richard Trotta
* Garth/Stephen Notes attachment:mtg_23feb02.txt
695
* Richard
696
** attachment:KaonLTMeeting2_2_23.pdf
697
** The simc portion of the LT_analysis code is working but there is a bug I am sorting out which produces incorrect plots
698
** During a discussion Ali, Vijay, and I had, it was realized that another script is likely missing which I will discuss with Bill. This script is one that combines the phi settings for the fortran code.
699 474 Vijay Kumar
** Dave and I met to go over the fixed variable implementation in SIMC. We fixed a few issues which I am in the process of fixing.
700
* Vijay
701 477 Alicia Postuma
** Update from the analyzed low epsilon data of Q2 = 0.38 GeV2. attachment:KaonLT_meeting_Feb2_2023.pdf
702
* Alicia
703
** Preliminary asymmetry results: Q2=3/W=2.32, Q2=4.4/W=2.74, Q2=2.115/W=2.95, aluminum
704
** attachment:Asymmetry_Postuma_Feb2.pdf
705 474 Vijay Kumar
706
707
---
708 469 Richard Trotta
709
h3. Jan 26, 2023
710 473 Garth Huber
711 469 Richard Trotta
* Stephen's Notes attachment:mtg_23jan26.txt
712
* Richard
713
** attachment:KaonLTMeeting1_26_23.pdf attachment:FullAnalysis_Q5p5W3p02_highe.pdf
714
** LT_analysis script is finishing up. I have the SIMC portion just about working now. I have some other things I am adding because of my conversation with Bill last week.
715 470 Nathan Heinrich
** SIMC vs Data plots for Q2=5p5 show a very small SIMC. Need to investigate further.
716
* Nathan
717
** attachment:RefTimes_Update_2023-01-26.pdf 
718
** Asked Carlos Yero about the cointime ref times, he sent me an older email chain attachment:ref_times_email_exchange.txt
719
*** only SHMS variables are used.
720 471 Nathan Heinrich
** Presented ref times plots, and suggested cuts.
721
*** Cuts are already set up and pull request is sent to LTSep_Analysis_2022 branch
722 469 Richard Trotta
723
---
724 458 Richard Trotta
725
h3. Jan 19, 2023
726 467 Garth Huber
727 462 Ali Usman
* Garth/Stephen Notes  attachment:mtg_23jan19.txt
728
* Ali
729 460 Vijay Kumar
** Looking at HMS Calorimeter and Cherenkov Efficiency and PID. attachment:KaonLT_Meeting_Jan_19.pdf
730
* Vijay
731
** attachment:Vijay_Jan19_2023.pdf
732 464 Alicia Postuma
** Trying to understand the pion cross-section across the acceptance. 
733
* Alicia
734
** attachment:Asymmetry_Postuma_Updates-6.pdf
735
** Added dummy target subtraction to asymmetry calculation
736
** Discussed fitting to extract cross-section ratio
737 458 Richard Trotta
** Requested: details on error calculations: attachment:Asymmetry_Errors.pdf
738
* Richard
739
** attachment:KaonLTMeeting1_19_23.pdf
740
** Implemented Jacob's diamond cut script into the setup before Bill's code. This also does the t-binning as well.
741 461 Nathan Heinrich
** There was missing code for the SIMC implementation which has been found. I am meeting with Bill tomorrow 1/20 to discuss this implementation. Once this is complete, everything is in place to run the Fortran code to get average kinematics and unsep cross sections.
742 468 Garth Huber
* Nathan
743 461 Nathan Heinrich
** Started working on reference times
744
** has some extra peaks in some runs
745 1 Richard Trotta
*** Should be explained by the triggers on in each run
746 468 Garth Huber
** attachment:RefTimes_Update_2023-01-19.pdf
747
748 458 Richard Trotta
----
749 453 Ali Usman
750
h3. Jan 4, 2023
751 457 Garth Huber
752 453 Ali Usman
* Garth's Notes attachment:mtg_23jan04.txt
753
* Ali
754 1 Richard Trotta
** attachment:Jan4_KLT_Meeting.pdf
755 458 Richard Trotta
** All Kaon_LT data has been replayed over the holidays. Slide show list of major changes for the replay.
756
757 459 Richard Trotta
---
758 458 Richard Trotta
759 454 Ali Usman
h2. 2022 Meetings
760 453 Ali Usman
761
---
762 450 Richard Trotta
763
h3. Dec 21, 2022
764 457 Garth Huber
765 450 Richard Trotta
* Garth/Stephen Notes attachment:mtg_22dec21.txt
766 451 Richard Trotta
* Richard
767 450 Richard Trotta
** attachment:KaonLTMeeting12_21_22.pdf
768
** SIMC code was updated to match what is in hcana, using hcana and parts of Carlos' code as a template. Things do not look right though. 
769
** We are a month behind at this point and Bill has finally responded to my questions so I am going to fully concentrate on getting cross sections before the Hall C collaboration meeting in January so that Nathan can present them. I am setting a soft deadline of January 6th to get him early results but will continue to push for cross sections by the talk.
770
771
---
772 449 Garth Huber
773
h3. Dec 14, 2022
774 457 Garth Huber
775 449 Garth Huber
* Garth/Stephen Notes attachment:mtg_22dec14.txt
776
777
---
778 442 Richard Trotta
779 440 Ali Usman
h3. Dec 7, 2022
780 457 Garth Huber
781 440 Ali Usman
* Garth/Stephen Notes attachment:mtg_22dec07.txt
782 442 Richard Trotta
* Ali
783 443 Richard Trotta
** New error calculation (binomial) for efficiencies and Live Times. attachment:KaonLT_Dec_5.pdf
784 446 Richard Trotta
* Richard
785 443 Richard Trotta
** "Q2=3.0, W=3.14, lowe":https://redmine.jlab.org/attachments/1707 "Q2=5.5, W=3.02, lowe":https://redmine.jlab.org/attachments/1708 "Q2=4.4, W=2.74, lowe":https://redmine.jlab.org/attachments/1709 "Q2=4.4, W=2.74, highe":https://redmine.jlab.org/attachments/1710 "Q2=5.5, W=3.02, highe":https://redmine.jlab.org/attachments/1711 "Q2=3.0, W=3.14, highe":https://redmine.jlab.org/attachments/1712
786
** A new subroutine has been added for the hcana variable calculations in SIMC, this is ongoing.
787
** Plots of right/left/center for each physics setting have been added, including efficiencies and t-bin plots (no diamond cuts yet!). These plots show the input to Bill's code for comparison. These need to be updated with Ali's updates so a new set of replays will need to be analyzed.
788 448 Alicia Postuma
** Bill is doing a write-up with some questions I had which will hopefully fix the remaining issues I've been having with his code.
789 440 Ali Usman
* Alicia: attachment:Asymmetry_Postuma_Dec07.pdf
790
791
---
792 439 Garth Huber
793
h3. Nov 30, 2022
794
795
* Garth/Stephen Notes attachment:mtg_22nov30.txt
796
797
---
798 437 Garth Huber
799
h3. Nov 23, 2022
800
801 438 Alicia Postuma
* Garth/Stephen Notes attachment:mtg_22nov23.txt
802 437 Garth Huber
* Alicia asymmetry update attachment:Asymmetry_Postuma_Updates.pdf
803
804
---
805 424 Richard Trotta
806
h3. Nov 16, 2022
807 435 Garth Huber
808 424 Richard Trotta
* Garth/Stephen Notes attachment:mtg_22nov16.txt
809 428 Richard Trotta
* Richard
810
** "8p2 LH2":https://redmine.jlab.org/attachments/1684 "8p2 C":https://redmine.jlab.org/attachments/1685
811 424 Richard Trotta
** "10p6 C 2":https://redmine.jlab.org/attachments/1686 "10p6 C 1":https://redmine.jlab.org/attachments/1687 "10p6 LH2 1":https://redmine.jlab.org/attachments/1688 "10p6 C 3":https://redmine.jlab.org/attachments/1689 "10p6 LH2 2":https://redmine.jlab.org/attachments/1690 "10p6 LH2 3":https://redmine.jlab.org/attachments/1691
812
** Fits for lumi scans look great for HMS across the board. SHMS no track also look pretty good but tracking still needs work. Ali has adjusted the tracking parameters in the replay which should help things. Signs of boiling are also now evident in HMS for some runs.
813
** Odd issue with the yields going on that I need to discuss with Bill. It seems to be a cut discrepancy that is eliminating events, I may be missing a cut that he has hidden somewhere. Besides this, the cross-section code is being edited for HeeP so we can get some cross-section plots on this soon.
814 429 Richard Trotta
** I found a script for raster calibrations. The script is being fixed as it is currently a bit of a mess.
815 430 Stephen Kay
** https://redmine.jlab.org/projects/kltexp/wiki/Hall_C_Raster_Algorithm
816
* Stephen
817
** Updates to the hcana RFTime class
818
** Added in particle dependent corrections for e/pi/K/p for each spectrometer
819
*** Calculate beta for each particle type (from momentum, delta)
820
*** Determine path length from xptar and delta
821
*** Calculate ToF
822
*** Add this in modulo that determines RFtime
823
*** Tried method Shuo used initially, didn't really do anything
824 433 Stephen Kay
** Some further updates needed before it will be pushed to the hallc repo
825
** "Slides":https://redmine.jlab.org/attachments/1694 
826
** "RF corrections applied exactly as Shuo applied them":https://redmine.jlab.org/attachments/1696 "RF corrections determined as Shuo did, but applied inside the modulo fn":https://redmine.jlab.org/attachments/1697 
827 436 Garth Huber
** "RF correction simply the ToF added in the modulo fn, seems to work":https://redmine.jlab.org/attachments/1695
828
* Vijay (presented by GH)
829 424 Richard Trotta
** low Q2 attachment:CPULT_lowQ2.png attachment:TLT_lowQ2.png attachment:ELT_lowQ2.png
830
831
---
832 420 Vijay Kumar
833
h3. Nov 09, 2022
834 421 Garth Huber
835 422 Garth Huber
* Garth/Stephen Notes attachment:mtg_22nov09.txt
836 423 Garth Huber
* Bill (Wenliang) Li L/T-separation code tutorial.
837 420 Vijay Kumar
** Video recording is posted at: http://lichen.phys.uregina.ca/~huberg/kaon/LT_tutorial_20221109_1920x1080.mp4
838
* Vijay
839
** The scaler Yield looks very nice at 2.7 GeV PionLT data. Below 10 uA could be fixed by placing some of the offsets in the BCM calibration. attachment:Vijay_LumiStuy.pdf 
840
841
---
842 405 Vijay Kumar
843
h3. Nov 2, 2022
844 416 Garth Huber
845 405 Vijay Kumar
* Garth/Stephen notes attachment:mtg_22nov02.txt
846 406 Vijay Kumar
* Vijay
847 1 Richard Trotta
** The first round of the Lumi study in 2.7 GeV data of the PionLT experiment was preceded. The plots are attached, but I do not have any conclusions for now. Please see the attachment.
848 419 Vijay Kumar
attachment:Vijay_REYIELD_2p7C.pdf 
849 411 Ali Usman
  
850
* Ali
851 412 Ali Usman
** Heep Coin Offset study using Peter Bosted's correction factor for HMS central momenta. The results from 8.2 and 10.6 GeV improved after applying the offset whereas 6.2 over corrects the distributions as they are already looking good with no offset. Data and SIMC comparison look very good for W distribution but doesn't perfectly match for missing variables.
852 418 Jacob Murphy
attachment:KaonLT_Meeting_Nov_2.pdf
853
* Jacob
854
** Regarding Ali's work on the Pc offsets at high momentum, I referenced the delta corrections I made early last year. In EPICS, the NMR did not appear to be locked and in the middle of the scan, the NMR was changed. Slide 15 has the offsets to the central momentum, Pc.
855 413 Richard Trotta
attachment:HMS_Optimization_at_High_Momentum.pdf
856 427 Richard Trotta
* Richard
857 426 Richard Trotta
** "6p2 C":https://redmine.jlab.org/attachments/1658 "6p2 LH2":https://redmine.jlab.org/attachments/1659
858 413 Richard Trotta
** "10p6 C 1":https://redmine.jlab.org/attachments/1662 "10p6 C 2":https://redmine.jlab.org/attachments/1663 "10p6 C 3":https://redmine.jlab.org/attachments/1664 "10p6 LH2 1":https://redmine.jlab.org/attachments/1665 "10p6 LH2 2":https://redmine.jlab.org/attachments/1666 "10p6 LH2 3":https://redmine.jlab.org/attachments/1667
859
** Luminosities are looking very nice. These now include the ones Peter pointed out that were taken during SIDIS. Nearly all e-e runs are under 5%.
860
** I have debugged all of the issues I was having with Bill's code. I am now in the process of merging the two frameworks which is mainly just making names, conventions, etc. consistent.
861
** I have been writing up some questions for Bill next week when he presents. I'd like to also have these two frameworks pretty much merged by then.
862 405 Vijay Kumar
863 325 Garth Huber
 
864 346 Richard Trotta
----
865 403 Garth Huber
866
h3. Oct 26, 2022
867
868
* DaveG notes attachment:mtg_22oct26.txt
869
870
----
871 402 Garth Huber
872 1 Richard Trotta
h3. Oct 19, 2022
873 402 Garth Huber
874 401 Richard Trotta
* Garth/Stephen notes attachment:mtg_22oct19.txt
875
* Richard
876
** The trend in the SHMS track yields is still present in the positive polarity luminosity runs.
877
** Talk for the Hall C Quarterly meeting was discussed. 
878
879
----
880 400 Garth Huber
881
h3. Oct 12, 2022
882
883
* Garth/Stephen notes attachment:mtg_22oct12.txt
884
885
----
886 397 Richard Trotta
887
h3. Oct 4, 2022
888 399 Garth Huber
889 397 Richard Trotta
* Garth/Stephen notes attachment:mtg_22oct05.txt
890
* Richard
891
** attachment:KaonLTMeeting10_4_22.pdf
892
** Fixed some issues with the luminosity scripts with updated replay and analysis script. The biggest issue was the really low beam on times which came from BCM4a being called by accident in some cases instead of BCM1.
893
*** It should be noted, there are huge discrepancies between BCM4A and BCM1 in some cases (like 20+ uA).
894
** Ran into some issues with the cross-section code. I am in debug mode trying to find the cause.
895
** Tanja sent me some awesome fpi2 raster correction documents as well as procedures for verifying the beam and target positions. I am in the process of reading through/beginning these procedures. A Redmine wiki page will be linked when completed.
896
897
----
898 393 Garth Huber
899
h3. Sept 28, 2022
900 394 Garth Huber
901
* Garth/Stephen notes attachment:mtg_22sep28.txt
902 396 Jacob Murphy
* Jacob
903 394 Garth Huber
** HMS optics fitting - attachment:HMS_Optics_Calibrations_Update.pdf
904 393 Garth Huber
905
----
906 382 Garth Huber
907
h3. Sept 21, 2022
908 392 Garth Huber
909 389 Richard Trotta
* Garth/Stephen notes attachment:mtg_22sep21.txt
910
* Richard
911
** attachment:Yield_6p2cl1.pdf attachment:Yield_10p6cl2.pdf attachment:Yield_10p6cl1.pdf
912 390 Richard Trotta
** Lumi SHMS tracking is still showing the trend from 9/8. It was found that the lumi replay script is not updated with many of Ali and Richard's most recent changes. These changes are being applied and a set of new replays will be done.
913
** Bill's cross-section code is broken into two major parts. The root analysis part, which takes all the yields, uncertainties, etc., is nearly complete with the connecting ltsep framework script finishing up. The second part, where many of the final plots and cross-sections are done, is a hard-coded mess. Richard is in the process of making this more dynamic. This aspect will take more time but the root analysis part is the bulk of the analysis anyways.
914
* Ali
915 391 Ali Usman
** attachment:Ali_Sep21_Analysis.pdf
916 389 Richard Trotta
** Heep Coin analysis for high Q2 KaonLT data (6.2, 8.2, 10.6 GeV beam energy) has now all the efficiencies/live times applied. The results for all 3 beam energies are looking very good. Data/SIMC ratios are agreeing very well (< 3%) and the shapes are matching up nicely. Next step is to finalize offsets for both low and high Q2 KaonLT data. Also proton absorption correction and target boiling needs to be applied.
917 382 Garth Huber
918
----
919 379 Garth Huber
920
h3. Sept 8, 2022
921 382 Garth Huber
922 383 Ali Usman
* Garth/Stephen Notes attachment:mtg_22sep08.txt
923
* Ali
924 386 Ali Usman
** attachment:Sep8_Analysis.pdf
925 384 Ali Usman
** Heep Coin Analysis update. Fixed the issue with emiss and pmiss. Includes number of debug tests.
926 387 Ali Usman
** attachment:FullAnalysis_4p9-2.pdf attachment:FullAnalysis_8p2.pdf attachment:FullAnalysis_6p2.pdf attachment:FullAnalysis_3p8-1.pdf attachment:FullAnalysis_10p6-1.pdf
927 380 Richard Trotta
** Full analysis files are the latest data/simc comparison for different beam energies (No offsets applied yet) 
928
* Richard
929 381 Richard Trotta
** attachment:KaonLTMeeting9_8_22.pdf
930 380 Richard Trotta
** attachment:Yield_6p2_l1_all.pdf attachment:Yield_10p6_l1_all.pdf attachment:Yield_10p6_l2_all.pdf
931
** Improved total uncertainties
932
** In-depth with tracking cut analysis underway
933
** Poor TLT consistent with poor CPULTs
934 379 Garth Huber
935
----
936 371 Garth Huber
937
h3. Aug 31, 2022
938 379 Garth Huber
939 378 Richard Trotta
* Garth/Stephen Notes attachment:mtg_22aug31.txt
940
* Richard
941
** attachment:KaonLTMeeting8_31_22.pdf
942
** Improvements to luminosity analysis. Things are getting within a few percent. There are still some obvious issues with dependency leaking into the cuts, especially for tracking which is being investigated further.
943
** Uncertainties for the luminosities and heep are next up.
944 371 Garth Huber
945
----
946 374 Garth Huber
947 1 Richard Trotta
h3. Aug 26, 2022
948 375 Garth Huber
949 374 Garth Huber
* Meeting on L/T-separation procedure
950
** Garth's slides attachment:LT_sep_iterations.pdf
951 377 Garth Huber
** Bill's tutorial (Nov 2018) attachment:Kaon_LT_tutorial_18nov28.pdf
952 395 Garth Huber
** Stephen's notes attachment:LTsep_mtg_22aug26.txt
953 373 Garth Huber
** Recording of Sept 27 repeat at: http://lichen.phys.uregina.ca/~huberg/kaon/LT_tutorial_20220927_1920x1080.mp4
954
955 372 Garth Huber
----
956 366 Garth Huber
957 368 Vijay Kumar
h3. Aug 17, 2022
958 371 Garth Huber
959 367 Vijay Kumar
* Garth/Stephen Notes attachment:mtg_22aug17.txt
960 369 Vijay Kumar
* Vijay
961 367 Vijay Kumar
** The summary of the Heepcheck study is attached here. attachment:Vijay_Aug17_2022.pdf 
962 370 Richard Trotta
** 3.6 and 3.9 GeV data do NOT have the angle offsets. This has been established in the study.
963
** I've plotted the offsets vs SHMS central momentum. Plots are attached in the attached pdf file.
964
* Richard
965
** The 10.6 GeV heep analysis is going well but the broad momentum distributions are making offsets difficult at times.
966
** I have decided to give a second pair of eyes to Ali's hcana vs simc calculation investigation. It is concluded that the broad peaks of the hcana are likely caused by the secondary particle calculation which is gathered from the spectrometer track info. 
967
** Corrections to the simc pmiss components have been added to the fortran code which corrects for a minus sign that is in hcana but missing from simc.
968
** attachment:FullAnalysis_Offset_10p6.pdf
969 367 Vijay Kumar
** attachment:HcanavSimc_scatter_calc.pdf
970 366 Garth Huber
 
971
972
---
973 354 Garth Huber
974
h3. Aug 4, 2022
975 365 Garth Huber
976 363 Vijay Kumar
* Garth/Stephen Notes attachment:mtg_22aug04.txt
977
* Vijay
978 362 Richard Trotta
** The offset HeepCheck study at 3.9, 4.9 (KaonLT), 2.7, 3.6 and 4.5 (PionLT) GeV has been completed. attachment:Vijay_HeepCheckStudy.pdf  
979
* Richard
980
** attachment:KaonLTMeeting_8_4_22.pdf
981
** HeeP coin for 10p6 setting is looking pretty good. I still need to make some minor adjustments.
982
** TLT for Lumi is looking much better. The yields also are looking better but cut adjustments need to be made.
983
** HeeP singles have some odd issues that need to be resolved before offset analysis can begin.
984 355 Garth Huber
** Hodoscope calibrations are all done except 6p2.
985 354 Garth Huber
986
---
987 350 Richard Trotta
988
h3. July 14, 2022
989 353 Garth Huber
990 350 Richard Trotta
* Garth/Stephen Notes attachment:mtg_22jul14.txt
991
* Richard
992
** attachment:KaonLTMeeting7_14_22.pdf
993 1 Richard Trotta
** The W peaks for SIMC and data are very far offset from one another. This is being investigated.
994 350 Richard Trotta
* Vijay
995 349 Garth Huber
** Heep Data MC comparo w/o offsets attachment:Heep_coin_no_offsets_vijay_22jul08.pdf
996
997
----
998 344 Richard Trotta
999
h3. June 28, 2022
1000 349 Garth Huber
1001 344 Richard Trotta
* Garth/Stephen Notes attachment:mtg_22jun28.txt
1002
* Richard
1003
** Aerogel XY plots vs NPE to check out the tray location and efficiencies.
1004
** Hodoscope and calorimeter scripts working. Hodoscope calibration looks good for 10p6 but needs improvement for other beam energies.
1005 1 Richard Trotta
** HGCer efficiency and plots added to efficiency script. Need to discuss with Vijay on specifics of cuts and efficiencies.
1006 348 Jacob Murphy
** Started looking in detail at Bill's code. Some scripts and links are missing/broken.
1007
* Jacob
1008
** EDTM Study Report completed, with newer versions of the TLT equations attachment:EDTM_Study_Report.pdf
1009 347 Richard Trotta
** Graphical Guide for Event Types created to accompany the report, illustrating prescaling with EDTM attachment:Graphical_Guide_Evt_Type.pdf
1010 344 Richard Trotta
** Plan to update report file template with new equations and errors soon
1011
1012 282 Vijay Kumar
----
1013 338 Garth Huber
1014
h3. June 14, 2022
1015 343 Garth Huber
1016 342 Richard Trotta
* Garth's Notes attachment:efficiencies_22jun13.txt
1017
* Richard
1018
** Fixed issues with simc script and 10p6 Heepcoin data. Issue with data was an offset of 40ns that was corrected halfway through runs.
1019
** Aerogel XY plots vs NPE to check out the tray location and efficiencies.
1020
** Efficiency plots for all production runs.
1021 338 Garth Huber
** attachment:KaonLTMeeting6_14_22.pdf
1022
1023
----
1024 1 Richard Trotta
1025 330 Garth Huber
h3. May 31, 2022
1026
1027 340 Garth Huber
* Garth and Stephen's Notes attachment:mtg_22may31.txt attachment:efficiencies_22jun02.txt
1028 332 Vijay Kumar
* Vijay 
1029 334 Ali Usman
** The updated Heep coin study (Heepcheck program) at 3.9 GeV KaonLT data is attached here attachment:Vijay_KaonLT_meeting_May31_2022.pdf .
1030 355 Garth Huber
* Ali
1031 332 Vijay Kumar
** First look at the HEEP COIN Data/SIMC comparison for the 8.2 GeV Kaon-LT data attachment:KaonLT_May31.pdf
1032 314 Garth Huber
1033
----
1034
1035
h3. May 17, 2022
1036 325 Garth Huber
1037 331 Garth Huber
1038 318 Richard Trotta
* Garth and Stephen's Notes attachment:mtg_22may17.txt attachment:efficiencies_22may25.txt
1039
* Richard
1040
** Updated heep coin scripts for the farm. Ali is testing them and should be able to get plots soon.
1041
** There was a small typo in the simc input file that dramatically changed the shape of the plots. attachment:KaonLTMeeting5_17_22.pdf
1042 316 Vijay Kumar
** Updated version of efficiency columns for the script that will grab efficiencies and various other values. attachment:efficiency_output_list.docx
1043
* Vijay 
1044 317 Vijay Kumar
** The updated heep coin study (some spectrometers offsets changed) at 3.9 GeV KaonLT data is attached here attachment:Vijay_KaonLT_meeting.pdf .
1045 314 Garth Huber
1046
----
1047 299 Garth Huber
1048 303 Vijay Kumar
h3. May 3, 2022
1049 315 Garth Huber
1050 308 Ali Usman
* Garth and Stephen's Notes attachment:mtg_22may03.odt  attachment:efficiencies_22may03.odt
1051
* Ali
1052
** Fixed all the settings for high Q2 KaonLT data. Also slide on accessing spectrometer angles from CODA
1053 309 Richard Trotta
** attachment:KaonLT_May_3.pdf
1054 312 Richard Trotta
* Richard
1055 302 Vijay Kumar
** Analysis of 10.6 GeV heep data. Need to scale data to see how they compare with SIMC for smaller offsets. attachment:KaonLTMeeting5_3_22.pdf
1056 304 Vijay Kumar
* Vijay 
1057 305 Vijay Kumar
** The SIMC simulation study of the PinoLT data at Q2 = 0.38 and 0.42 GeV2 has completed (preliminary) for all settings.
1058 299 Garth Huber
** An output pdf file of the 4.5 GeV, Q2 = 0.42 GeV2 and "center" setting is here attachment:Vijay_analysis_May3_2022.pdf .
1059 300 Garth Huber
1060
----
1061 296 Vijay Kumar
1062 299 Garth Huber
h3. April 19, 2022
1063
1064 1 Richard Trotta
* Garth's Notes attachment:mtg_22apr19.txt
1065 296 Vijay Kumar
* Vijay 
1066 298 Vijay Kumar
** SIMC simulation updates at Q2 = 2.7, 3.6 and 4.5 GeV2. attachment:Vijay_KaonLT_Meeting_Apr19_2022.pdf  
1067 296 Vijay Kumar
1068
----
1069
1070 306 Vijay Kumar
h3. April 06, 2022
1071 355 Garth Huber
1072 306 Vijay Kumar
* Garth's Notes attachment:mtg_22apr06.txt
1073 293 Garth Huber
* Ali 
1074 290 Richard Trotta
**  attachment:Analysis_Update_Apr_6.pdf 
1075
* Richard 
1076 288 Richard Trotta
** attachment:KaonLTMeeting4_6_22.pdf
1077
** The analysis of the 10.6 GeV heep coin/singles settings are still ongoing. 
1078
** There were some issues getting the replays working for the singles runs and the analysis. Things finally were sorted out yesterday (and this morning).
1079 291 Richard Trotta
** The SHMS heep singles are presented. Overall, they look fine. There are still some things to sort out.
1080 282 Vijay Kumar
** The HMS heep singles are still running.
1081 306 Vijay Kumar
* Vijay 
1082 288 Richard Trotta
** The simulation study of the 4.9 GeV KaonLT data has completed.
1083 295 Garth Huber
** This energy has left, center and right settings data. All these settings look fine. 
1084 284 Vijay Kumar
** See the pdf for more info. attachment:Vijay_KaonLT_Meeting_Apri_06_2022.pdf  
1085 1 Richard Trotta
1086 284 Vijay Kumar
----
1087 281 Richard Trotta
1088 1 Richard Trotta
h3. March 23, 2022
1089 281 Richard Trotta
1090 1 Richard Trotta
* Garth's Notes attachment:mtg_22mar23.txt
1091 278 Richard Trotta
* Richard 
1092
** 10.6 GeV heep coin was analyzed. Things look pretty good so far, still some work to be done. attachment:KaonLTMeeting3_23_22.pdf
1093 280 Nathan Heinrich
** Heep singles are next up. There have been issues replaying these runs but Ali may have fixed this issue with his parameter file changes.
1094
* Nathan
1095 278 Richard Trotta
** Did chack of the Mode 10 plots for HGC, was discrepancy between hardware and software caused by the variable phgcer_SampNSAT being 2 by default.
1096
** after changing back to 1 discrepancy resolved. Slides: attachment:Mode10Update_2022Mar23.pdf
1097
1098
---
1099
1100
h3. March 9, 2022
1101
1102 355 Garth Huber
* Garth's Notes attachment:mtg_22mar09.txt
1103 267 Richard Trotta
* Regina March 4 meeting on pion leak through in (e,e'K+) analysis attachment:grp_22mar04.txt
1104
* Richard 
1105
** Vijay's scripts are working and Richard reproduced some of his previous plots. attachment:KaonLTMeeting3_9_22.pdf
1106 1 Richard Trotta
** The next step is to do a full analysis of the 10.6 GeV heep coin/singles data.
1107 277 Garth Huber
* Nathan
1108
** Update on the current state of mode 10: attachment:Mode10Update_2022Mar9.pdf 
1109 269 Richard Trotta
** See Mark Jones' slide on changes to hcana: https://redmine.jlab.org/attachments/1424
1110 261 Garth Huber
1111
---
1112 271 Garth Huber
1113 273 Garth Huber
h3. February 23, 2022
1114 271 Garth Huber
1115
* Garth's Notes attachment:mtg_22feb23.txt
1116 272 Garth Huber
1117
---
1118 244 Vijay Kumar
1119
h3. January 26, 2022  
1120 271 Garth Huber
1121 253 Vijay Kumar
* Garth's Notes attachment:mtg_22jan26.txt
1122 251 Vijay Kumar
* Vijay, Heep updates from the PionLT experiment. attachment:Analysis_Updates_Jan26_2022.pdf 
1123 252 Vijay Kumar
** HMS single 2.7 GeV, total 6 settings. attachment:HMS_Analysed_2p7_1.pdf attachment:HMS_Analysed_2p7_2.pdf attachment:HMS_Analysed_2p7_3.pdf attachment:HMS_Analysed_2p7_4.pdf attachment:HMS_Analysed_2p7_5.pdf attachment:HMS_Analysed_2p7_6.pdf   
1124 246 Vijay Kumar
** SHMS single 2.7 GeV,total 6 settings. attachment:SHMS_Analysed_2p7_1.pdf attachment:SHMS_Analysed_2p7_2.pdf attachment:SHMS_Analysed_2p7_3.pdf attachment:SHMS_Analysed_2p7_4.pdf attachment:SHMS_Analysed_2p7_5.pdf attachment:SHMS_Analysed_2p7_6.pdf
1125 250 Vijay Kumar
** The 3.6 and 4.5 GeV data do not have elastic data.
1126 254 Nathan Heinrich
** Coin: 2.7, 3.6 and 4.5 GeV. attachment:Analysed_2p7.pdf attachment:Analysed_3p6.pdf attachment:Analysed_4p5.pdf   
1127 255 Nathan Heinrich
* Nathan, Short update on the Mode 10
1128 256 Jacob Murphy
** Short update. May need to update hcana to change software voltage threshold. attachment:2022-01-26NathanHeinrich.pdf
1129 260 Jacob Murphy
* Jacob, EDTM Study 2
1130 255 Nathan Heinrich
** EDTM study with beam, taken during LUMI Scan 3
1131 248 Vijay Kumar
** Early look at 3rd EDTM Study
1132 113 Richard Trotta
** Additional notes on increased deadtime in SHMS at High Current. attachment:PionLT_EDTM_Study2_Analysis.pdf
1133 222 Richard Trotta
1134 200 Richard Trotta
----
1135 236 Garth Huber
1136
h3. January 12, 2022  
1137
1138
* Garth's Notes attachment:mtg_22jan12.txt
1139
* Junaid
1140 240 Vijay Kumar
** PID study
1141 238 Vijay Kumar
* Vijay
1142 236 Garth Huber
** Heep-singles study attachment:Analysis_Updates1_Jan12.pdf 
1143
* Nathan
1144
** Mode-10 data variables
1145 243 Richard Trotta
1146
----
1147 234 Garth Huber
1148
h3. January 5, 2022  
1149 235 Garth Huber
1150 221 Richard Trotta
* Garth's Notes attachment:mtg_22jan05.txt
1151
* Stephen
1152
** Stephen was updating GitHub but UTIL_BATCH has some permissions issues
1153
* Richard
1154
** Update to KLT task schedule
1155
** Meeting between Richard and Vijay to discuss task breakdown Friday, January 7th at 11 am EST
1156 223 Richard Trotta
** EDTM study 2 will done sometime this weekend
1157
* Vijay
1158 224 Richard Trotta
** Breakdown of HEEP single analysis for low Q2 data
1159
*** Shapes of SIMC and data are very off
1160 231 Vijay Kumar
*** It seems to be a systematic issue on Vijay's part because the same issue is being seen in PLT data
1161 229 Vijay Kumar
*** The main issue in my input file was the target thickness, which picked up by Dave in the group meeting. I corrected the target thickness and now it looks ok. See the attached pdf file below.  
1162 228 Vijay Kumar
** https://redmine.jlab.org/attachments/1376
1163 225 Nathan Heinrich
** https://redmine.jlab.org/attachments/1375
1164
* Nathan
1165
** Update on fADC mode 10 studies and the fADC deadtime studies
1166 226 Jacob Murphy
** https://redmine.jlab.org/attachments/1372
1167
* Jacob
1168 227 Jacob Murphy
** Summary of EDTM analysis so far in the PionLT experiment
1169 242 Richard Trotta
** https://redmine.jlab.org/attachments/1373
1170 221 Richard Trotta
1171
----
1172
1173
h2. 2021 Meetings
1174 220 Richard Trotta
1175
h3. August 4, 2021
1176
1177
* Richard
1178
** Update on the HEEP singles. The remainder of energy setting ratios vs SIMC were looked at over the range of angles. They look good (within 1% and < 0.5% uncertainty).
1179
** Issues with the COIN are seen but may be a replay issue.
1180
1181
----
1182 217 Richard Trotta
1183
h3. July 21, 2021
1184 218 Richard Trotta
1185 217 Richard Trotta
* "Richard":https://redmine.jlab.org/attachments/download/1250/KaonLTMeeting7_14_21.pdf
1186
** Update on the HEEP singles. 10.6 GeV ratios vs SIMC were looked at over the range of angles. They look good (within 1%) but proper error bars are needed.
1187
1188
----
1189 215 Richard Trotta
1190
h3. May 12, 2021
1191
1192
* Richard
1193
** The currents were adjusted from 1-10 uA with little effect on the EDMTLT but proper changes to the CPULT. The replay bcm cut script developed by Sanghwa was also analyzed to see if it may be causing the issue but it had the same effects. There was also a small error in the code found where T.coin.pEDTM.tdcTimeRaw was incorrectly written as T.coin.pEDTM.tdcTime.
1194
1195
----
1196 213 Richard Trotta
1197
h3. April 28, 2021
1198
1199 214 Richard Trotta
* Richard
1200 213 Richard Trotta
** Lumi table was created for 2 sets of runs. Odd behavior seen ~30-45 uA with EDTM where is drops. Playing with the current cuts is the next step.
1201
1202
----
1203 211 Richard Trotta
1204 212 Richard Trotta
h3. April 14, 2021
1205 211 Richard Trotta
1206
* "Richard":https://redmine.jlab.org/attachments/download/1197/KaonLTMeeting_4_14_21.pdf
1207
** Updated Lumi carbon plots with uncertainties. PID and current cuts need to be played around with a bit to see if they improve things (as uncertainties don't explain any boiling-type behaviors). 
1208
** Some PionLT carbon runs were looked at but there are still some issues (either cut or pathing related).
1209
1210
----
1211 203 Richard Trotta
1212
h3. March 31, 2021
1213 206 Richard Trotta
1214 209 Richard Trotta
* Richard
1215
** Luminosity studies
1216
*** PionLT carbon runs
1217
**** Still having issues getting decent results. I think I am just missing a definition somewhere that I need to track down
1218
*** Uncertainties
1219
**** Easy to do, I just need to put it into my script
1220
** Explicit PS calculations
1221
*** I have gotten a rough script working for very simple runs (ie low rate, single spectrometer, calibration runs)
1222
*** I am trying to expand to lumi singles runs, things get a bit more complex so I am just working out the trigger correlations
1223
** Pass 2 runs
1224
*** DEF-files
1225
**** I checked out the DEF-files for our combination of the nested files
1226
**** There are a lot a files (~150!!!!) and may be hard to track so next week *we should make a flowchart together*
1227
**** Working on my list of branches for the next replay
1228
***** Mainly just working on my list of branches for the explicit PS calculations
1229 210 Stephen Kay
***** *Everyone should have a list of these branches by next mini-meeting (4/7/21)*
1230
* Stephen
1231
** Updated DEF-File for the "full" replay
1232
*** Can't remove NData brances, Mark says they won't take up too many resources anyway
1233
*** Removed individual PMT info and raw info for many detectors, reduced file size by factor ~2
1234
** Updating DEF-files/scripts for calibrations as part of PionLT prep
1235
** Will focus on DEF-file/DEF-cut file updates over next week
1236 207 Richard Trotta
*** Will investigate HeeP replays over rest of this week.
1237 203 Richard Trotta
1238
----
1239 201 Stephen Kay
1240
h3. March 24, 2021
1241
1242
* KaonLT Mini Meeting focusing on Pass2 preparation
1243
* "Task summary from Richard":https://redmine.jlab.org/projects/kltexp/wiki/Replay_2_Tasks
1244
1245
----
1246 200 Richard Trotta
1247
h3. March 17, 2021
1248
1249 1 Richard Trotta
* "Richard":https://redmine.jlab.org/attachments/download/1197/KaonLTMeeting_3_17_21.pdf
1250 202 Stephen Kay
** I have re-run the carbon lumi runs with the changes to the replay events (i.e. All_events_NO_EDTM). The results look pretty good (within a few percent). There are still some trends I need to investigate for certain runs and I need to do the analysis for the pionLT carbon lumi data.
1251 201 Stephen Kay
* Mini meeting March 24th @ 4:30 EDT
1252 200 Richard Trotta
1253 194 Richard Trotta
----
1254 199 Richard Trotta
1255
h3. March 3, 2021
1256
1257
* "Richard":https://redmine.jlab.org/attachments/download/1197/KaonLTMeeting_3_3_21.pdf
1258
** I found an issue with the replay scripts used where the EDTM was not being properly registered. There is a discrepancy between two replay scripts depending on what the Decode_master is set to (i.e. ALL_events vs ALL_events_NO_EDTM). 
1259
** The explicit calculation of the prescale has hit a snag because of the differences between 6 GeV and 12 GeV. I contacted Mark Jones, who explained there are significant differences in the ADC gate between the two eras (which my own findings confirmed). I have contacted Brad for further input.
1260
1261
----
1262
1263 196 Richard Trotta
1264 194 Richard Trotta
h3. February 17, 2021
1265
1266
* Richard
1267 198 Nathan Heinrich
** Tried to remove some cumbersome elements to the analysis scripts without success. A few runs were added to a well behaved set of lumi runs with good consistency.
1268
* Nathan
1269
** Presented an update on the Hodoscope Calibrations: https://redmine.jlab.org/attachments/download/1196/HodoscopeUpdate_2021Feb17.pdf
1270 194 Richard Trotta
1271
----
1272 196 Richard Trotta
1273 193 Richard Trotta
h3. February 3, 2021
1274
1275
* Richard
1276
** A table with the aerogel efficiency for kaons is being created. It will be expanded to other particles and detectors.
1277
1278
----
1279 196 Richard Trotta
1280 191 Richard Trotta
h3. January 20, 2021
1281
1282
* "Richard":https://redmine.jlab.org/attachments/download/1172/KaonLTMeeting_1_20_21.pdf
1283
** All KaonLT carbon runs have been analyzed. There are still some issues that seem to be related to the pre-scale values. I may need to investigate the EDTM and/or the COIN events further to correct for these.
1284
1285
----
1286 196 Richard Trotta
1287 190 Richard Trotta
h3. January 6, 2021
1288
1289 322 Richard Trotta
* "Richard":https://redmine.jlab.org/attachments/download/1153/KaonLTMeeting1_6_21.pdf
1290 186 Richard Trotta
** Analyzed most of the luminosity scans. There are a few issues I am investigating still which seem to be run related. 
1291
1292
----
1293
1294
h2. 2020 Meetings
1295 185 Richard Trotta
1296
h3. December 2, 2020
1297
 
1298
* Ali and Richard
1299
** Richard included the EDTM to Lumi analysis and found some old analysis of scalers by Mark Jones that he will compare. Ali and Richard met last week and will begin combining Ali's tracking studies with Richard's lumi analysis.
1300
1301
----
1302 180 Richard Trotta
1303
h3. November 18, 2020
1304 183 Richard Trotta
1305 181 Richard Trotta
* "Carlos":https://redmine.jlab.org/attachments/download/1103/LiveTime_Study_cyero.pdf
1306 180 Richard Trotta
** He is investigating some of the EDTM rate dependence and sees a discrepancy between the total EDTM LT and CPU LT with a sudden dip at 20-30 kHz. More luminosity runs will need to be studied for a full conclusion.
1307
* "Richard":https://redmine.jlab.org/attachments/download/1101/KaonLTMeeting11_18_20.pdf
1308
** Scaler analysis matches Carlos' code now. Overall significant improvements were made through some cut adjustments and incorrect variable definitions.
1309 182 Richard Trotta
* Stephen
1310 180 Richard Trotta
** Updated the hallc_replay_lt with parameter files for all coin peaks.
1311
1312
----
1313 178 Richard Trotta
1314 321 Richard Trotta
h3. November 4, 2020
1315 178 Richard Trotta
 
1316 321 Richard Trotta
* "Richard":https://redmine.jlab.org/attachments/download/1092/KaonLTMeeting11_4_20.pdf
1317 178 Richard Trotta
** Scaler analysis is getting closer to an answer. An in-depth comparison of Carlos and Richard's analysis shows inconsistencies between the two. 
1318 141 Stephen Kay
1319
----
1320 170 Richard Trotta
1321
h3. October 28, 2020
1322
1323 177 Richard Trotta
* Ali
1324 172 Richard Trotta
** Went over some of his tracking procedures for the report file implementation
1325 173 Richard Trotta
* "Richard":https://redmine.jlab.org/attachments/download/1091/KaonLTMeeting10_28_20.pdf
1326 171 Stephen Kay
** Luminosity analysis continues. There are still some issues but things have improved a bit.
1327
* "Stephen":https://redmine.jlab.org/attachments/download/1090/KaonLT_Meeting_28_10_20.pdf
1328 174 Richard Trotta
** Discussion of CT peak analysis, progress and outline of what's left to do with this
1329 176 Richard Trotta
* Vijay
1330 170 Richard Trotta
** Dry run for Mark's hallc meeting tomorrow (10/29)
1331
1332
----
1333 164 Richard Trotta
1334
h3. October 14, 2020
1335 168 Richard Trotta
1336 164 Richard Trotta
* Ali
1337
** Working through the REPORT_FILES template to get everything working and outputting proper information.
1338
* "Richard":https://redmine.jlab.org/attachments/download/1085/KaonLTMeeting_10_14_20.pdf
1339 167 Richard Trotta
** Updates on lumi scans. There are many issues from Scalers to Tracking that need to be resolved.
1340 164 Richard Trotta
* Stephen
1341 1 Richard Trotta
** He has included a demo for using the python analysis script in the README.
1342 164 Richard Trotta
1343
----
1344 161 Richard Trotta
1345
h3. September 23, 2020
1346
1347
* "Richard":https://redmine.jlab.org/attachments/download/1078/KaonLTMeeting_9_23_20.pdf
1348
** A quick lumi analysis after the Pass1 runs. The results were compared to previously analyzed runs (5154-5158). There was some change but nothing huge. Some other runs with the same energy settings were analyzed as well. 
1349 162 Richard Trotta
* Stephen
1350
** Showed some slides from u-channel meeting of omega and proton MM  plots. Then discussed some ideas for dealing with the hole in the HGCer.
1351
* Petr
1352 161 Richard Trotta
** Data fitting algorithm based on E.H. Bellamy paper. Extracts PMT spectra from ROOT file and makes a 1D projection histogram.
1353
1354
----
1355 149 Richard Trotta
1356 156 Richard Trotta
h3. September 9, 2020
1357
1358 157 Richard Trotta
* Richard
1359 156 Richard Trotta
** Still working on run list, GUI checks
1360
* "Stephen":https://redmine.jlab.org/issues/567
1361
** New slim replay scripts and full replay scripts updated
1362
* Ali
1363
** Him and Stephen found an issue (already aware of) with zeros in the parameter files using Mark's hcana changes
1364 158 Richard Trotta
** Need to be vigilant of crashed replays because this is probably the issue
1365 156 Richard Trotta
* Vijay
1366 1 Richard Trotta
** Nearly finished with HGcer calibrations
1367 156 Richard Trotta
1368
----
1369
1370
h3. August 26, 2020
1371 149 Richard Trotta
1372 154 Richard Trotta
*Links to talks->* "Ali":https://redmine.jlab.org/issues/483 "Vijay":https://redmine.jlab.org/issues/479
1373
1374
* Richard
1375
** New tasks were created based on the previous discussions on objectives going forward. In the process of checking run sheets against the run list and camera/EPICS.
1376
* Stephen
1377
** Updated on RF times. There were a few issues with some runs, but overall most are finished.
1378
* Ali
1379
** Hodoscope calibrations look similar to before. There is still the issue of the double bands in the time walk. This is ok because of the wide windows we still have. (See "hodoscope calibration section":https://redmine.jlab.org/projects/kltexp/wiki/Analysis_Tasks#Calibrations-Mid-to-Late-August-2020)
1380 150 Richard Trotta
* Vijay
1381 1 Richard Trotta
** Updated the SHMS HGCher analysis. The calibrations are coming along, but a little more work needs to be finished up.
1382 149 Richard Trotta
1383
----
1384 144 Richard Trotta
1385 147 Stephen Kay
h3. July 29, 2020
1386 148 Richard Trotta
1387 146 Stephen Kay
*Links to talks->* "Richard":https://redmine.jlab.org/attachments/download/1029/klt_7_29_20.html "Stephen":https://redmine.jlab.org/documents/106
1388 155 Richard Trotta
1389
* Stephen
1390
** Updates on scripts to set pedestal defaults and AdcTdc offsets after hcana change
1391
* Richard
1392 1 Richard Trotta
** Updated plan and schedule for the analysis going forward
1393 144 Richard Trotta
1394
----
1395 139 Richard Trotta
1396 1 Richard Trotta
h3. July 8, 2020
1397 139 Richard Trotta
1398 150 Richard Trotta
*Links to talks->* "Vijay":https://redmine.jlab.org/attachments/download/1023/SHMS%20Proton%20Absorption.ods "Ali":https://redmine.jlab.org/attachments/download/1022/KaonLT_Meeting_Jul_8.pdf
1399 139 Richard Trotta
1400
----
1401 132 Richard Trotta
1402
h3. June 24, 2020
1403 143 Richard Trotta
1404 132 Richard Trotta
*Links to talks->* "Vijay":https://redmine.jlab.org/attachments/download/1014/Vijay_24_June_20.pdf "Richard":https://redmine.jlab.org/attachments/download/1013/KaonLTMeeting_6_24_20.pdf
1405
1406
----
1407 129 Richard Trotta
1408
h3. June 9, 2020
1409 135 Richard Trotta
1410 129 Richard Trotta
*Links to talks->* "Vijay":https://redmine.jlab.org/attachments/download/1006/Vijay_9_June_20.pdf "Ali":https://redmine.jlab.org/attachments/download/1007/KaonLT_Meeting_Jun_9.pdf "Richard":https://redmine.jlab.org/attachments/download/1005/KaonLTMeeting_6_9_20.pdf
1411
1412
----
1413 125 Richard Trotta
1414
h3. May 27, 2020
1415 126 Richard Trotta
1416 128 Richard Trotta
*Links to talks->* "Vijay":https://redmine.jlab.org/attachments/download/1002/Vijay_26_May_20.pdf "Ali":https://redmine.jlab.org/attachments/download/1003/KaonLT_Meeting_May_27%20%5BAutosaved%5D.pdf
1417 125 Richard Trotta
1418
----
1419 118 Stephen Kay
1420 124 Richard Trotta
h3. May 13, 2020
1421 138 Stephen Kay
1422 1 Richard Trotta
*Links to talks->* "Stephen":https://redmine.jlab.org/attachments/download/993/KaonLT_Meeting_13_05_20.pdf - Python analysis scripts "Richard":https://redmine.jlab.org/attachments/download/998/KaonLTMeeting_5_13_20.pdf "Ali":https://redmine.jlab.org/attachments/download/997/KaonLT_Meeting_May_13.pdf "Vijay":https://redmine.jlab.org/attachments/download/999/Vijay_13_May_20.pdf
1423 121 Richard Trotta
1424
----
1425 111 Richard Trotta
1426
h3. April 29, 2020
1427 138 Stephen Kay
1428 106 Richard Trotta
*Links to talks->* "Richard":https://redmine.jlab.org/attachments/download/984/KaonLTMeeting_4_29_20.pdf "Stephen":https://redmine.jlab.org/attachments/download/985/KaonLT_Meeting_29_04_20.pdf - Python code planning "Mark's hcana tracking update":https://redmine.jlab.org/attachments/download/982/Updates-to-HCANA-tracking.pdf
1429 1 Richard Trotta
1430 106 Richard Trotta
----
1431 111 Richard Trotta
1432 104 Richard Trotta
h3. April 15, 2020
1433 102 Richard Trotta
1434 105 Richard Trotta
*Links to talks->* "Richard":https://redmine.jlab.org/attachments/download/977/KaonLTMeeting_4_15_20.pdf
1435 102 Richard Trotta
1436 95 Stephen Kay
----
1437 111 Richard Trotta
1438 100 Stephen Kay
h3. April 1, 2020
1439 138 Stephen Kay
1440 101 Richard Trotta
*Links to talks->* "Stephen":https://redmine.jlab.org/attachments/download/949/KaonLT_Meeting_01_04_20.pdf - RF timing "Richard":https://redmine.jlab.org/attachments/download/948/KaonLTMeeting_4_1_20.pdf
1441 41 Stephen Kay
1442 93 Richard Trotta
----
1443 111 Richard Trotta
1444 93 Richard Trotta
h3. March 18, 2020
1445
1446 1 Richard Trotta
*Links to talks->* "Richard's EIC Temple Draft 2":https://redmine.jlab.org/attachments/download/942/DRAFT2_mesonSF_EIC_Temple.pdf
1447 93 Richard Trotta
1448 91 Richard Trotta
----
1449 111 Richard Trotta
1450 92 Richard Trotta
h3. March 11, 2020
1451 1 Richard Trotta
1452 94 Richard Trotta
*Links to talks->* "Ali":https://redmine.jlab.org/attachments/download/940/KaonLT_Meeting_Mar_11.pdf "Richard's EIC Temple Draft 1":https://redmine.jlab.org/attachments/download/941/DRAFT1_mesonSF_EIC_Temple.pdf
1453 91 Richard Trotta
1454 88 Richard Trotta
----
1455 111 Richard Trotta
1456 90 Richard Trotta
h3. Feb 26, 2020
1457
1458
* Peter's changes to hcana should be coming soon. Richard will check with Mark when he is down there for an update.
1459 1 Richard Trotta
* Need to incorporate the latest "BCM updates":https://hallcweb.jlab.org/doc-public/ShowDocument?docid=1034 from Dave Mack.
1460 88 Richard Trotta
* Richard should look at the luminosity scalar analysis before and after the BCM changes once he gets his script working again.
1461 1 Richard Trotta
**  He is checking with Mark about this while he is down in jlab. 
1462
1463 86 Richard Trotta
----
1464 111 Richard Trotta
1465 87 Richard Trotta
h3. Feb 10, 2020 
1466 86 Richard Trotta
1467 1 Richard Trotta
----
1468 111 Richard Trotta
1469 83 Richard Trotta
h3. Jan 22, 2020
1470
1471 85 Richard Trotta
*Links to talks->* "Richard's Hall C Winter Talk Draft 1":https://redmine.jlab.org/attachments/download/937/KaonLTHallC_WinterTalk2020_Draft1.pdf
1472 1 Richard Trotta
1473 83 Richard Trotta
----
1474 111 Richard Trotta
1475 81 Richard Trotta
h3. Jan 15,2020
1476 82 Richard Trotta
1477 81 Richard Trotta
*Links to talks->* "Richard's Hall C Winter Talk Outline":https://redmine.jlab.org/attachments/download/936/KaonLTHallC_WinterTalk2020.pdf
1478
1479 78 Richard Trotta
----
1480 111 Richard Trotta
1481 78 Richard Trotta
h3. Jan 8,2020
1482 1 Richard Trotta
1483 79 Richard Trotta
*Links to talks->* "Richard":https://redmine.jlab.org/documents/76
1484 1 Richard Trotta
1485
* Richard
1486
** PID efficiency script is coming together
1487
*** Tighter cuts and cuts on timing, beta, etc. will be needed for cleaner electron cuts
1488
*** Hcal cut should be changed to cut around the mean normalized value instead of cutting above or below it only. This will assure electrons aren't lost.
1489 80 Richard Trotta
1490 113 Richard Trotta
----
1491 112 Richard Trotta
1492 80 Richard Trotta
h2. 2019 Meetings
1493 141 Stephen Kay
1494
----
1495 111 Richard Trotta
1496
h3. Dec 17,2019
1497 77 Richard Trotta
1498
Reminder: Mark Jones' commissioning analysis meetings are bi-weekly and announced by Mark
1499
1500
* Stephen
1501
** Number of passes finished for HMS calorimeter
1502
*** Still wiggles in all passes
1503
** Finished his report on calibrations, "DC and Calorimeters":https://redmine.jlab.org/documents/74
1504
** Put together a list of people's jobs from Regina over the next couple of months, "Regina Analysis Tasks":https://redmine.jlab.org/documents/75
1505 1 Richard Trotta
*** CUA will be putting together a similar list
1506 77 Richard Trotta
1507
* Richard
1508
** Fixed one error issue with SHMS calorimeter calibration code (discussed Dec 10th meeting), but still have one error
1509
** PID efficiency script plots are complete, but still some questions he needs to work out before a final version
1510
*** Eventually need to include tracking into PID efficiencies
1511
** Pete brought up the question for a number of multi-hits we are getting
1512
*** (Dead Time)+(Trigger efficiency)-EDTM
1513
1514 72 Richard Trotta
----
1515 111 Richard Trotta
1516 72 Richard Trotta
h3. Dec 10,2019
1517 74 Richard Trotta
1518
*Links to talks->* "Richard":https://redmine.jlab.org/documents/73
1519
1520
* Garth and Stephen were in the most recent SIDIS meeting
1521
** Wit had lots of hcana changes but they seem to be critical to our work 
1522 1 Richard Trotta
*** Changes such as new detector classes
1523
** Hopefully Wit will present these in the next commissioning meeting
1524 77 Richard Trotta
1525 74 Richard Trotta
* Stephen improved wiggles but still prevalent
1526
1527
* Richard finished HGCer calibrations, he concluded that the online parameters are sufficient
1528
** He also has been looking at SHMS calorimeter calibrations but has had issues running the scripts. Most likely a pathing issue.
1529
** The "tasks":https://redmine.jlab.org/projects/kltexp/wiki/Analysis_Tasks page has been updated with a section for efficiencies. 
1530
*** A PID efficiency script is currently being developed and hopefully should have some plots for our next meeting.
1531 75 Richard Trotta
1532 74 Richard Trotta
----
1533 111 Richard Trotta
1534 71 Richard Trotta
h3. Nov 26,2019
1535
1536
*Links to talks->* "Richard":https://redmine.jlab.org/issues/480
1537
1538
* Stephen
1539
** DC SHMS, small-angle has poor performance
1540
*** Tighter cuts or PID (currently only looks for electrons)
1541
** Vardan said calorimeter wiggles are an ongoing issue with no current solution
1542
1543 1 Richard Trotta
* Richard
1544 71 Richard Trotta
** The calibrations are nearing completion with only the HG Cherenkov and SHMS calorimeter yet to be finished. There are also smaller issues with some DC and HMS calorimeter runs.
1545
*** Richard will pick up looking at the HGCer calibrations from Vijay's scripts. 
1546
*** Richard will also be looking at the SHMS calorimeter and with the suggestion of getting some negatively polarized SHMS runs from Hem.
1547
** The HMS Cherenkov is finished with the conclusion that the calibrations from the online runs are good
1548
** We can begin looking forward towards efficiencies. 
1549
*** Garth suggested that looking at PID may be an advantageous first steps. Precise definitions of these PIDs will need to be logged.
1550
*** Clear notes on efficiencies steps will be needed. They will need to be redefined multiple times in multiple ways. 
1551
1552
* Hem
1553 70 Richard Trotta
** Has been looking at the calorimeter as well. 
1554
** He has seen the second band in the spectra for some runs, we suggested further looks into HMS hodoscope and subsequently reference times. A recalibration will need to be performed.  
1555
1556
----
1557 111 Richard Trotta
1558 1 Richard Trotta
h3. Nov 19,2019
1559 70 Richard Trotta
1560
*Links to talks->* "Stephen":https://redmine.jlab.org/issues/500 "Richard":https://redmine.jlab.org/issues/500
1561
1562
* Richard
1563
** Finished up TDC cut paper going through the procedure (found "here":https://redmine.jlab.org/issues/500)
1564
** Needed to add Carlos pre-trigger designs to an appendix for the paper which clarifies the introduction section
1565
1566
* Stephen
1567
** Issues with DC calibration for only a few runs during each run period
1568
** "wiggles" in HMS calorimeter calibrations for some runs
1569
*** few runs where HMS cal totally failed (which was dependent on initial parameters)
1570
*** Spring looked worse than the rest (surprisingly), but this may be because online calibration wasn't great
1571 2 Richard Trotta
1572 68 Richard Trotta
----
1573 111 Richard Trotta
1574 68 Richard Trotta
h3. Nov 5,2019
1575
1576
*Links to talks->* "Stephen":https://redmine.jlab.org/issues/500
1577
1578
* Timing update (Stephen)
1579
** Reference times between Richard and Stephen are very similar and the GitHub is updated accordingly
1580
** Richard is going to add the trigger time cuts once the fall runs are finished (by end of week)
1581 1 Richard Trotta
** First pass of detector reference time parameter files finished
1582 68 Richard Trotta
1583
* Peter's hcana code (Richard and Stephen)
1584
** Peter's code does not remove ghost bands (already known), but now Stephen is seeing a strang horizontal band for just SHMS hodoscope 2D plots
1585
*** Richard has emailed Peter about the issue with no response yet (follow-up soon)
1586
** This means we still need the reference time amplitude cut with Peter's code but using just the amplitude cut with Mark's latest version of hcana should be sufficient for calibrations.
1587
1588
* Calibrations were decided to be done once per shift
1589
1590 127 Richard Trotta
* Next meeting schedule...
1591
** Small meetings Nov 12 and Nov 19 (at 3pm EST) so Richard and Stephen can iron out the timing and calibrations
1592 68 Richard Trotta
** November 26 (at 3pm EST) will be a larger meeting. 
1593
*** This is the rough deadline we made for finishing up calibrations. 
1594
*** This should be sufficient for all detectors (although hodoscope and HG which may persist). The ultimate goal is for all calibrations to be finished up before Winter break!!
1595
1596
----
1597 111 Richard Trotta
1598 62 Richard Trotta
h3. Oct 22,2019
1599 64 Richard Trotta
1600 62 Richard Trotta
*Links to talks->* "Stephen":https://redmine.jlab.org/issues/500 "Richard":https://redmine.jlab.org/issues/500
1601 65 Richard Trotta
1602
* SHMS Reference Time Amplitude Cuts(Stephen)
1603
** Extra peaks in HG from cross-talk and "ghost-bands" due to ADC screw up
1604
*** cuts applied on SHMS ADC ref time amplitude (greater than zero) done before any further event selection and histogram filling
1605
** This is a temporary fix to "ghost-bands" and cross talk
1606
*** Although for HG there is still a small peak. The hodoscope is fine.
1607
** The time window is easier to set now.
1608
** DC has been fine (since it uses TDC)
1609
*** DC calibrations should be good to complete, other detectors need more fixes (i.e. the remaining "ghost-band")
1610
** Hodoscope still bad but this might be because of that "ghost-band", needs to be further investigated
1611 1 Richard Trotta
1612 67 Richard Trotta
* Peter's hcana fixes for reference time (Richard)
1613
** Peter implemented changes to hcana
1614 1 Richard Trotta
** Two major issues...
1615 67 Richard Trotta
## Amplitude goes to null and integral is low or negative which causes a rate-dependent efficiency. 
1616 1 Richard Trotta
*** Peter has used the average pulse value acquired over a large sample of runs for each detector. 
1617 67 Richard Trotta
## Timing offset between EL-REAL and 3/4 is 130 ns which causes junk tracks at high SHMS rates (~6% of the time)
1618
*** Peter created a routine to find the best offset by means of matching TDC and ADC
1619
** Richard has been checking for bugs in the code. 
1620
*** It seems to be ready to implement, Richard emailed Peter for confirmation on the implementation in our group directory
1621 1 Richard Trotta
1622 67 Richard Trotta
* Calibration of HMS detectors when the timing is agreed upon by Stephen and Richard.
1623 65 Richard Trotta
** Besides hodoscope which still has an issue with the script
1624 62 Richard Trotta
** Stephen and Richard are having a meeting late next week to determine time window values
1625
*** These will be relatively final, but on the wider side if adjustments need to be made in the future
1626 1 Richard Trotta
1627 61 Richard Trotta
-----
1628 111 Richard Trotta
1629 61 Richard Trotta
h3. Sep 24,2019
1630
1631 1 Richard Trotta
*Links to talks->* "Stephen":https://redmine.jlab.org/issues/500 "Richard":https://redmine.jlab.org/issues/500
1632 61 Richard Trotta
1633 1 Richard Trotta
-----
1634 111 Richard Trotta
1635 59 Vijay Kumar
h3. Sep 10,2019
1636
1637 1 Richard Trotta
*Links to talks->* "Stephen":https://redmine.jlab.org/documents/69 "Ali":https://redmine.jlab.org/documents/72 "Richard":https://redmine.jlab.org/issues/500
1638
1639 55 Stephen Kay
-----
1640 111 Richard Trotta
1641 55 Stephen Kay
h3. August 26, 2019
1642
1643 1 Richard Trotta
*Links to talks->* "Stephen":https://redmine.jlab.org/documents/69 "Ali":https://redmine.jlab.org/documents/70 "Vijay":https://redmine.jlab.org/documents/71 "Richard":https://redmine.jlab.org/issues/500
1644 54 Richard Trotta
1645
----
1646 111 Richard Trotta
1647 54 Richard Trotta
h3. June 21, 2019
1648 1 Richard Trotta
1649 54 Richard Trotta
*Links to talks->* "Hallc Talk Outline":https://redmine.jlab.org/documents/60 
1650 42 Stephen Kay
1651
----
1652 111 Richard Trotta
1653 1 Richard Trotta
h3. June 14, 2019
1654 46 Richard Trotta
1655 42 Stephen Kay
*Links to talks->* "Hallc Talk Outline":https://redmine.jlab.org/documents/60 "Mireille":https://redmine.jlab.org/documents/64 "Update-Mireille":https://redmine.jlab.org/documents/65 "Vijay":https://redmine.jlab.org/attachments/download/814/Analy_update3.pdf
1656
1657 35 Stephen Kay
1658 1 Richard Trotta
----
1659 111 Richard Trotta
1660 36 Vijay Kumar
h3. June 4, 2019
1661 1 Richard Trotta
1662 35 Stephen Kay
*Links to talks->* "Stephen":https://redmine.jlab.org/documents/56 "Nathan":https://redmine.jlab.org/documents/57 "Vijay":https://redmine.jlab.org/documents/58 "Richard":https://redmine.jlab.org/documents/59 "Hallc Talk Outline":https://redmine.jlab.org/documents/60 "Mireille":https://redmine.jlab.org/documents/61
1663 1 Richard Trotta
1664 35 Stephen Kay
1665 1 Richard Trotta
----
1666 111 Richard Trotta
1667 1 Richard Trotta
h3. May 21, 2019
1668
1669 35 Stephen Kay
*Links to talks->* "Richard":https://redmine.jlab.org/documents/52 "Mireille":https://redmine.jlab.org/documents/? "Stephen":https://redmine.jlab.org/documents/53 "Nathan":https://redmine.jlab.org/documents/54 "Vijay":https://redmine.jlab.org/documents/55
1670
1671 1 Richard Trotta
----
1672 111 Richard Trotta
1673 1 Richard Trotta
h3. May 14, 2019
1674 35 Stephen Kay
1675 1 Richard Trotta
*Links to talks->* "Richard":https://redmine.jlab.org/documents/48 "Carlos' slides":https://redmine.jlab.org/documents/49 "Mireille":https://redmine.jlab.org/documents/50 "Stephen":https://redmine.jlab.org/documents/51
1676 35 Stephen Kay
1677 1 Richard Trotta
----
1678 111 Richard Trotta
1679 1 Richard Trotta
h3. April 30, 2019
1680
1681 35 Stephen Kay
*Links to talks->* "Richard":https://redmine.jlab.org/documents/45 "Richard's slides in wiki":https://redmine.jlab.org/projects/kltexp/wiki/Analysis_How-To "Brad Computing":https://redmine.jlab.org/documents/46 "Stephen":https://redmine.jlab.org/documents/47
1682 1 Richard Trotta
1683
----
1684
1685
h3. February 4, 2019
1686
1687
*Links to talks->* "Richard":https://redmine.jlab.org/documents/43 "Stephen":https://redmine.jlab.org/documents/44
1688
1689 113 Richard Trotta
----
1690 112 Richard Trotta
1691 141 Stephen Kay
h2. 2018 Meetings
1692
1693 111 Richard Trotta
----
1694
1695
h3. August 21, 2018
1696 1 Richard Trotta
1697 35 Stephen Kay
*Ongoing Tasks->* #381 #382 #383 #404 #405 #406
1698 1 Richard Trotta
1699 35 Stephen Kay
----
1700 111 Richard Trotta
1701 35 Stephen Kay
h3. August 8, 2018
1702
1703 1 Richard Trotta
*Ongoing Tasks->* #381 #382 #383 #404 #405 #406
1704
1705 35 Stephen Kay
----
1706 111 Richard Trotta
1707 1 Richard Trotta
h3. August 3, 2018
1708 35 Stephen Kay
1709
*Ongoing Tasks->* #381 #382 #383
1710 1 Richard Trotta
*Links to talks->*
1711 35 Stephen Kay
1712 1 Richard Trotta
----
1713 111 Richard Trotta
1714 1 Richard Trotta
h3. July 11, 2018
1715 35 Stephen Kay
1716 1 Richard Trotta
*Ongoing Tasks->* #381 #382 #383 #384
1717 35 Stephen Kay
1718 1 Richard Trotta
*Action items:*
1719 35 Stephen Kay
1720
* Update run plan, e.g. add prescales (Garth)
1721
* Check on details of: magnet cycling procedure, minimum angles, MCC fringe field steering, beam energy measurements, optics checks (Tanja)
1722
* Identify additional run coordinators (Tanja)
1723
* Encourage collaborators to take shifts, e.g. FIU (Pete)
1724
* Draft email about shifts etc. to collaboration (Tanja)
1725
* Develop diagnostic scripts and kaonLT specific (Richard, Ryan)
1726 1 Richard Trotta
* Continue documentation development, e.g. checklist, shift taker instructions, HowTo or link to generic Hall C HowTo, task list, web page (Richard, Garth)
1727 35 Stephen Kay
1728
*Discussions:*
1729
1730
* SHMS Aerogel Cherenkov: tray has been changed to SP-11 on 10 July, nominal time for change is 8 hours, one tray can stay in the hall to minimize overhead
1731
* HGC: waiting for re-installation
1732 1 Richard Trotta
* Trigger checkout: main items to keep in mind: fADC thresholds, timing HMS/SHMS - leading arm, possible rate limitations
1733
* Shifts
1734
* Diagnostics scripts and documentation
1735
* Personnel schedules
1736
1737
----
1738 111 Richard Trotta
1739 1 Richard Trotta
h3. June 28, 2018
1740
1741
*Links to talks->* "Richard":https://redmine.jlab.org/documents/34
1742
1743
*Action Items:*
1744
1745
* Develop and post shift schedule. Send out request. Find out who is KAONLT liaison (Tanja)
1746
* Contact potential run coordinators. (Tanja)
1747
* Aerogel tray exchange for start of experiment and coordination of future exchanges (Vladimir)
1748
* Update runplan and prepare documents needed for shift crew, e.g. run sheets (Garth)
1749
* Set up a web page to collect and link from Redmine - How-To documents, initial calibrations, etc. (Garth, Richard)
1750
* Adapt luminosity scan script to calculate kaon yields by run number for use during experiment by shift crew - has to be simple to use. (Richard)
1751
* Develop trigger/detector checkout plan (Tanja, initial draft)
1752
** Are all experts available at run start, experts needed: coincidence timing , Harp Scans, BCM calibrations, ...
1753
* Find out from JLab what the anticipated settings are for limit switches for both spectrometers and for separation angle in between them. Also find out what magnet cycling procedure should be used for L/T quality separation data (Tanja)
1754
* Find out if all aerogel trays needed for experiment can be stored inside Hall C to avoid having to open truck ramp (Vladimir)
1755
1756
*Analysis Updates:*
1757
1758
* Ryan 
1759
** resolving differences between his analysis and Richard's
1760
1761
* Richard
1762
** Discussed with Mark Jones and is cross checking his January luminosity scan analysis against Mark's. Realized that BCM calibrations (gains, offsets etc) are different - currently working on fixing that, presents current results - low curent point is ~10% below unity, discussion that this seems to indicate that BCM offsets are the issue as low current points would be most sensitive, is planning to also double-check the BCM calibration procedure - had discussion with Dave Mack at JLab
1763
** Presents a script developed for luminosity scans that determines yields for a run number input on command line. Discussion this could be good to adapt for kaon counting during experiment.
1764
1765
----
1766 111 Richard Trotta
1767 1 Richard Trotta
h3. May 31, 2018
1768 35 Stephen Kay
1769 1 Richard Trotta
*Links to talks->* "Samip":https://redmine.jlab.org/documents/30
1770 35 Stephen Kay
1771 1 Richard Trotta
----
1772 111 Richard Trotta
1773 1 Richard Trotta
h3. May 17, 2018 
1774 35 Stephen Kay
1775 2 Richard Trotta
*Links to talks->* "Richard":https://redmine.jlab.org/documents/29, "Ryan":https://hallcweb.jlab.org/DocDB/0009/000968/001/Presentation.pdf, "Samip":https://redmine.jlab.org/documents/30
1776 35 Stephen Kay
1777 111 Richard Trotta
* Luminosity scans (Richard, Ryan)
1778 35 Stephen Kay
** Carbon scan from April seems consistent with no boiling, LH3 and LD2 show deviation from unity, should check effect of EDTM events on efficiencies
1779
** Carbon scans from January (low rates) have large deviations from unity, in particular behavior at higher currents (>40uA), e.g. cpu dead time, that is not yet understood
1780 1 Richard Trotta
** discussion about pre-scale factors
1781 35 Stephen Kay
1782
* Discussion about Richard's script extracting and printing information from report files and trees including histograms
1783
** Add option for looking at yields with cuts on cointime, target window, and missing mass
1784 1 Richard Trotta
** Add option to look at real peak vs. background level
1785 35 Stephen Kay
1786
* H(e,e'p) kinematics investigation for fall run (Samip)
1787 1 Richard Trotta
** Optimal range is between electron angles of 17-20 degrees, time required ranges from ~1 hour at 17 degrees to ~3 hour at 20 degrees, other angles may be of interest for disentangling charge and current dependent effects
1788 35 Stephen Kay
1789
* *Action Items*
1790
** Luminosity scans at low rates from January (Richard)
1791
** Luminosity scans from April with corrected efficiencies, e.d. DT (Ryan)
1792
** H(e,e'p) and H(e,e') kinematics for upcoming Kaon LT run (Samip)
1793
** Kaon LT detailed run plan (Garth, Pete, Tanja)
1794 1 Richard Trotta
** Preparations, e.g. report files, diagnostic histograms and real time monitoring, shift worker instructions, optimization of trees (all)
1795
1796
----
1797 111 Richard Trotta
1798 35 Stephen Kay
h3. May 10, 2018
1799 2 Richard Trotta
1800 35 Stephen Kay
*Links to talks->* "Hem":https://redmine.jlab.org/documents/24, "Richard":https://redmine.jlab.org/documents/23, "Ryan, ":https://redmine.jlab.org/documents/20 "Samip":https://redmine.jlab.org/documents/26
1801
1802
* Luminosity Scans January 2018 (Richard)
1803
** Tracking-based analysis for Runs 1415-1423, .. for now focus on HMS, typical HMS S1X rates are <
1804
** Cuts applied: PID for electrons (Cer, Cal), acceptance (delta)
1805
** Efficiency calculation was investigated in detail and applied using scalers from trees
1806
** Results for carbon (normalized to 30uA) show large variation - need to understand
1807
** *Next steps:*
1808
*** Double check calculation of computer lifetime, look for differences in TRIG and PRETRIG scalers
1809
*** Check stability of pre-scale (Ryan saw changes within runs)
1810
*** Check if detector calibrations for runs are implemented correctly
1811 1 Richard Trotta
*** Analyze with Ryan's cuts
1812 35 Stephen Kay
1813
* Luminosity Scans April 2018 (Ryan)
1814
** Confirms Richard's earlier finding that scaler-based analysis is not reliable and that it's best to analyze event-by-event
1815
** Tracking-based analysis for runs 2073-2095
1816
** Cuts applied: PID for electrons (TOF, Cal, Chi2), acceptance (delta and angles), BCM4a
1817
** Included most recent detector calibrations in replay of these runs
1818
** Efficiencies from report file mainly, may need to update tracking efficiency implementation
1819
** Found that calculations of computer deadtime requires different set of scalers for runs from January to those from April 2018
1820
** Results show carbon yields consistent with unity within error (0.5% error bars), and boiling for hydrogen and deuterium
1821 5 Richard Trotta
** *Next steps:*
1822 35 Stephen Kay
*** Check tracking efficiency
1823
1824 1 Richard Trotta
* *Global comments on Luminosity Scans (so far)*
1825 35 Stephen Kay
** April 2018 scans show hydrogen and deuterium target boiling on level of 3-4%, Carbon is consistent with no boiling, as expected - based on description, new targets are expected to have less boiling than those used previously, e.g. in FPI2. Double check this.
1826
** Efficiencies in report files need to be updated, e.g. CPU deadtime (Richard)
1827
** Check if BCM4a is the one closest to the target - get a map of the hall (Richard, Ryan)
1828
** Uncertainties on current
1829 1 Richard Trotta
** Detector calibrations
1830 35 Stephen Kay
** HMS vs. SHMS
1831
1832
* eK+ coincidence time from SIDIS Spring 2018 run (Samip)
1833
** Worked with Mark Jones on coincidence time calculation - now available in hcana (see Samip's 10 May 2018 email for more details)
1834
** runs used in this analysis: 3423 with Q2=3.1 GeV2 and W=2.78 GeV
1835
** Coincidence time spectrum shows peak separations >2 ns corresponding to different accelerator frequency
1836
** Missing mass spectra: Kaon peak clearly visible, also see pions even after cuts
1837 1 Richard Trotta
** Found that pions appear localized in phase space - seems to be due to end point in kinematic phase space
1838 2 Richard Trotta
** *Next steps:*
1839 35 Stephen Kay
*** Look for a run with kaon momentum closer to 3 GeV/c (aerogel threshold is ~3 GeV/c for kaons for n=1.015)
1840
1841
* Yield normalized ratios from SIDIS (Hem)
1842
** Yield ratios of data to MC match well in shape, but normalization seems not quite right
1843 4 Richard Trotta
** *Next steps:*
1844
*** Check if efficiencies, currents, run time etc. are taken into account correctly
1845
1846 35 Stephen Kay
----
1847 111 Richard Trotta
1848 4 Richard Trotta
h3. April 26, 2018
1849 35 Stephen Kay
1850 4 Richard Trotta
*Links to talks->* "Richard,":https://redmine.jlab.org/documents/18 "Ryan, ":https://redmine.jlab.org/documents/20 "Samip":https://redmine.jlab.org/documents/25
1851 35 Stephen Kay
1852
* Discussion luminosity scan analysis (earlier scan) - Richard
1853
** Shown is a scaler-based analysis using scalers from report file and from ROOT tree - the values are different, why that is has to be checked
1854
** Notes on efficiencies in report file:
1855
*** DT (EDTM) is not electronic deadtime. Instead use for now 50ns* trigger rate for HMS and 100ns* trigger rate for SHMS
1856
*** Cherenkov efficiency seems low (check if that is due to PID, thresholds, pi/e, etc)
1857
*** Tracking efficiency needs to be checked
1858
*** 3/4 trigger efficiency seems ok
1859
* Discussion luminosity scan analysis (later scan) - Ryan
1860
** Fewer carbon runs than earlier scan
1861 111 Richard Trotta
** Shown is a tracking-based analysis using data from the ROOT trees
1862 35 Stephen Kay
** First results for carbon, LH3, and LD2, but efficiencies need to be checked
1863
* SIDIS analysis - Hem
1864
** Shown is a data/MC comparison for different kinematic settings. Agreement in shape is very good. Normalization has yet to be applied.
1865
** Discussion about agreement in z and apparent offset - relation of this offset with spectrometer offset
1866
* Analysis of exclusive events in SIDIS - Samip
1867
** Shown is a look at the first kaon events in exclusive limit of SIDIS data
1868
** Ongoing work on implementing coincidence time into tree
1869
* Discussion of run plan, and in particular possible low Q2/low energy
1870
** Assume that kaon low Q2=0.4 already included - have kinematics with specified beam energies, if needed
1871
** For pion form factor and LT, have two possible settings that can use the prescribed beam energies: Q2=1.45 and 0.35 GeV2 - prioritize towards the higher Q2 as not as sensitive to offsets
1872
** Garth will put this together in a draft email
1873 12 Richard Trotta
1874
----
1875 111 Richard Trotta
1876 12 Richard Trotta
h3. March 29, 2018
1877 35 Stephen Kay
1878 13 Richard Trotta
*Links to talks->* "Richard, ":https://redmine.jlab.org/documents/16 "Samip":https://redmine.jlab.org/documents/27
1879 35 Stephen Kay
1880
* Details of adding points to fall run plan - will be ready sooner, likely in week of 4/1 (Garth, Samip, Tanja)
1881
* Luminosity scans (Ryan, Andres, Richard, Pete)
1882
* Macros, SIDIS analysis (Hem, Anashe)
1883
* Elastic data (TBD)
1884 14 Richard Trotta
1885 18 Richard Trotta
----
1886 111 Richard Trotta
1887 18 Richard Trotta
h3. February 22, 2018
1888 35 Stephen Kay
1889 18 Richard Trotta
*Links to talks->* "Andres":https://redmine.jlab.org/documents/19
1890 35 Stephen Kay
1891
*  Discussion of Andres' slides on elastic W calculation in hcana - initial issue with negative W values seems to be due to outdated information in standard.kinematics file. Additional investigation ongoing.
1892
* Brief description of Samip's work - working on coincidence timing decoding with JLab staff and re-optimization of kinematics
1893
* Discussion of Richard's slides on run plan kinematics and preparations -
1894
** everyone agrees that in general want to have as many L/T cross section separations as possible in a robust run plan balancing statistics vs. systematics
1895
** before actual run may want to do a 3D optimization in all kinematic variables to get the best possible delta(epsilon) for the L/T separations
1896
** for each setting will need 1-2 shifts for calibrations - need to negotiate with other experiments in run group
1897
** kinematics plots W-Q2 show that still need to do some optimization
1898
** run sheets: include raster size, update coincidence count labeling, and carbon target labeling
1899 26 Richard Trotta
* Discussion of next meeting. Garth at JLab 8-16 March - might have meeting during that time.
1900 35 Stephen Kay
1901
* *Action Items:*
1902
** Post slides/notes from this meeting and procedure to set up hcana in Redmine (Tanja)
1903
** Update run sheet and kinematic optimization for W/Q2 (Garth)
1904
** Circulate elastic calculations for kinematic settings (Samip)
1905
** Continue investigation of elastic data and run plan kinematics (Andres/Richard)
1906
** Test software installation instructions (Pete)
1907 32 Stephen Kay
** Draft email to JLab management about need for small angle beam pipe - need to have HMS minimum angle of less than 13 degrees for kaon L/T separations (Tanja) 
1908
1909 1 Richard Trotta
----