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Apr 06/22 PionLT/KaonLT Analysis Meeting Notes
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----------------------------------------------
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(thanks to Stephen for providing 1st draft)
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Participants:
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- Richard Trotta, CUA
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- Pete Markowitz, FIU
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- Dave Gaskell, JLab
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- Julie Roche, Ohio
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- Nathan Heinrich, Garth Huber, Muhammad Junaid, Stephen Kay, Vijay Kumar,
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Love Preet, Ali Usman, Regina
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Please remember to post your slides at:
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https://redmine.jlab.org/projects/kltexp/wiki/Kaon_LT_Meetings
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Richard
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-------
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- 10.6 GeV Heep Singles analysis and SIMC comparison
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- Yield equation defined in notes with each term clarified
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- Naming scheme issue
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- Running HMS singles settings for 10.6 GeV
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- Shifts in W distributions from SIMC for THshms=13.80,16.25deg, but
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THshms=18.00,19.85 have no shift
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- also, the THshms=18.00,19.85deg settings have good normalization
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agreement with SIMC, so very encouraging
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- need to investigate more carefully the causes of the TH=13.80,16.25
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discrepancies
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- *Suggestions*
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- Need to zoom in plots a bit, remove cut at 1 GeV on W, and show a line at
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the cut value instead
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- Need to add peak integrals
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- Pmiss components for HeeP singles?
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- Not as good as Coin info, but could point in the right direction
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- *Plan for next meeting*
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- HMS Heep Singles at 6.2, 8.4 GeV
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- Then determine Offsets
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- Analysis breakdown of work so far
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Ali
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---
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- Re-organisation of PionLT/KaonLT repos
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- database file changes
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- Point to param files in new structure
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- standard.kinematics fixes
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- Angles, momenta for HeeP Coin settings (6.2, 8.4 and 10.6)
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- Three different beam energy values for 10.6 GeV settings!
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- None of them were right!
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- All adjusted to 1 MeV for beam energies
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- *Should cross-check beam energies with Mark's webpage on wiki*
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- Angles to 3 decimal points of degree
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- UTIL_BATCH
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- New scripts to run KaonLT analysis scripts
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- *Plan for next meeting*
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- HeeP Singles kinematics checking followed by Physics settings
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- will coordinate with Richard (soon?!)
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- ~Next meeting should be mostly done
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- End of April/Early May probably reasonable
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Vijay
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-----
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- Physics analysis and SIMC comparison for 4.9 GeV physics setting, all three
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THshms settings
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- Slight MMK offset
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- Energy has been corrected in std.kin, but not the angle
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- SIMC yield multiplied by factor of 7
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- Central regions of plots look fairly well behaved, but edges are off at
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times
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- EMiss looks a bit off on the high end
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- Probably due to difference in delta? SHMS and HMS have an odd discrepancy
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in the low delta region, which is probably due to the t-dependence in the
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model being off compared to data
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- *Plan for next meeting*
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- Will look at low Q2 PionLT data next
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Jacob
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-----
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- Met Doug Higinbotham last week, expect new beam schedule this week (Friday)
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- We will get less beam time than last estimate, but higher current
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- Should expect 80uA
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- SHMS Hodoscope calibrations
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- Work from Carlos/Dave/Jacob uploaded to hallc_replay Github
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- Batch script issue
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- Calibration is significantly improved from earlier version
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- previously, we were seeing bands at beta~0.5
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- Beta more centred at 1 now
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- Dave M adjusted a hard cut on P.hod.1y.GoodPosTdcTimeWalkCorr
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- earlier cut was too tight, eliminating some hodoscopes from the
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calibration
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- Dave G: Should the hard coded cut be a parameter? Will it need to be
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changed again in future?
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- not sure, the hope is that if it is sufficiently wide, it won't need
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further adjustment
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- length of calibration script is doubled from before, not sure exactly
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what else was changed
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- Time walk correction implemented, improved
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- TDC theshold parameter changed from 120 to 1200, 12000 was also tried
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- Nathan: this variable is only used to make the time walk plots and has
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no bearing on the actual applied threshold
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- changes the time walk fit values, but not necessarily the goodness of
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fit
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Junaid
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------
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- JLab account issues
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- No longer an active user?
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- Virtual user only allowed to register for 1 year?
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- Working on high epsilon run plan
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- HeeP settings for one beam energy so far
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- DC Calibrations?
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- Read reports but haven't touched the new ones yet
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- Account issues blocked some progress on the DC
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Nathan
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------
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- High epsilon run plan preparation
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- Looked at some candidate settings
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Dave G
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------
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- FADC programming modification?
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- Not done yet
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- Want old style data and mode 10 data when it can't find pedestal
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- now it just dumps mode 10, so it's difficult to make a comparison
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- this could be particularly helpful for diagnosing problems with KaonLT
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data
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Stephen
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-------
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- Merged Ali's DBASE updates on GitHub
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- Will merge Jacob's hodoscope updates as soon as they're ready
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- Diagnose hodoscope batch issues for Jacob
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- will do some cdaq checks/updates at the end of the month
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- Moved online analysis files from cdaq to the ifarm, all on /cache
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- /cache/hallc/c-pionlt/analysis/pionLT-Online_Analysis_Files-2021/
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- this should make file access easier than from cdaq
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- Will be on tape silo eventually, all on cache now for now
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- stubs at /mss/hallc/c-pionlt/...
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Next Meeting
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------------
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- GH will circulate a poll to select a time for the week of April 18-22
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