Apr 06/22 PionLT/KaonLT Analysis Meeting Notes
                ----------------------------------------------
                  (thanks to Stephen for providing 1st draft)

Participants:
 - Richard Trotta, CUA
 - Pete Markowitz, FIU
 - Dave Gaskell, JLab
 - Julie Roche, Ohio
 - Nathan Heinrich, Garth Huber, Muhammad Junaid, Stephen Kay, Vijay Kumar,
   Love Preet, Ali Usman, Regina

Please remember to post your slides at:
https://redmine.jlab.org/projects/kltexp/wiki/Kaon_LT_Meetings

Richard
-------
- 10.6 GeV Heep Singles analysis and SIMC comparison
  - Yield equation defined in notes with each term clarified
  - Naming scheme issue
  - Running HMS singles settings for 10.6 GeV
  - Shifts in W distributions from SIMC for THshms=13.80,16.25deg, but
    THshms=18.00,19.85 have no shift
    - also, the THshms=18.00,19.85deg settings have good normalization
      agreement with SIMC, so very encouraging
    - need to investigate more carefully the causes of the TH=13.80,16.25
      discrepancies
- *Suggestions*
  - Need to zoom in plots a bit, remove cut at 1 GeV on W, and show a line at
    the cut value instead
  - Need to add peak integrals
  - Pmiss components for HeeP singles?
    - Not as good as Coin info, but could point in the right direction

- *Plan for next meeting*
  - HMS Heep Singles at 6.2, 8.4 GeV
  - Then determine Offsets
  - Analysis breakdown of work so far

Ali
---
- Re-organisation of PionLT/KaonLT repos
- database file changes
  - Point to param files in new structure
- standard.kinematics fixes
  - Angles, momenta for HeeP Coin settings (6.2, 8.4 and 10.6)
  - Three different beam energy values for 10.6 GeV settings!
    - None of them were right!
    - All adjusted to 1 MeV for beam energies
    - *Should cross-check beam energies with Mark's webpage on wiki*
    - Angles to 3 decimal points of degree
- UTIL_BATCH
    - New scripts to run KaonLT analysis scripts

- *Plan for next meeting*
  - HeeP Singles kinematics checking followed by Physics settings
    - will coordinate with Richard (soon?!)
    - ~Next meeting should be mostly done
    - End of April/Early May probably reasonable

Vijay
-----
- Physics analysis and SIMC comparison for 4.9 GeV physics setting, all three
  THshms settings
  - Slight MMK offset
    - Energy has been corrected in std.kin, but not the angle
  - SIMC yield multiplied by factor of 7
  - Central regions of plots look fairly well behaved, but edges are off at
    times
  - EMiss looks a bit off on the high end
    - Probably due to difference in delta? SHMS and HMS have an odd discrepancy
      in the low delta region, which is probably due to the t-dependence in the
      model being off compared to data

- *Plan for next meeting*
  - Will look at low Q2 PionLT data next

Jacob 
-----
- Met Doug Higinbotham last week, expect new beam schedule this week (Friday)
  - We will get less beam time than last estimate, but higher current
  - Should expect 80uA

- SHMS Hodoscope calibrations
  - Work from Carlos/Dave/Jacob uploaded to hallc_replay Github
  - Batch script issue
  - Calibration is significantly improved from earlier version
    - previously, we were seeing bands at beta~0.5
    - Beta more centred at 1 now
    - Dave M adjusted a hard cut on P.hod.1y.GoodPosTdcTimeWalkCorr
      - earlier cut was too tight, eliminating some hodoscopes from the
        calibration
      - Dave G: Should the hard coded cut be a parameter? Will it need to be
        changed again in future?
        - not sure, the hope is that if it is sufficiently wide, it won't need
          further adjustment
    - length of calibration script is doubled from before, not sure exactly
      what else was changed

    - Time walk correction implemented, improved
      - TDC theshold parameter changed from 120 to 1200, 12000 was also tried 
      - Nathan: this variable is only used to make the time walk plots and has
        no bearing on the actual applied threshold
      - changes the time walk fit values, but not necessarily the goodness of
        fit

Junaid
------
- JLab account issues
  - No longer an active user?
  - Virtual user only allowed to register for 1 year?

- Working on high epsilon run plan
  - HeeP settings for one beam energy so far

- DC Calibrations?
  - Read reports but haven't touched the new ones yet
  - Account issues blocked some progress on the DC

Nathan
------
- High epsilon run plan preparation
  - Looked at some candidate settings

Dave G
------
- FADC programming modification?
  - Not done yet
  - Want old style data and mode 10 data when it can't find pedestal
    - now it just dumps mode 10, so it's difficult to make a comparison 
    - this could be particularly helpful for diagnosing problems with KaonLT
      data

Stephen
-------
- Merged Ali's DBASE updates on GitHub
- Will merge Jacob's hodoscope updates as soon as they're ready
- Diagnose hodoscope batch issues for Jacob

- will do some cdaq checks/updates at the end of the month

- Moved online analysis files from cdaq to the ifarm, all on /cache
  - /cache/hallc/c-pionlt/analysis/pionLT-Online_Analysis_Files-2021/
    - this should make file access easier than from cdaq
    - Will be on tape silo eventually, all on cache now for now
    - stubs at /mss/hallc/c-pionlt/...

Next Meeting
------------
- GH will circulate a poll to select a time for the week of April 18-22