Difference between revisions of "Π polarizability Meeting Sep 1, 2021"

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# TOF Trigger (Simon)
 
# TOF Trigger (Simon)
 
#* Trigger bits for simulated ρ events (red= 1 bit in one plane, 2 in second; black = 2 bits in both planes)
 
#* Trigger bits for simulated ρ events (red= 1 bit in one plane, 2 in second; black = 2 bits in both planes)
[[File:trigbits_rho.png]]
 
 
#** Trig bit 1= FCAL, 4=BCAL, 32=TOF
 
#** Trig bit 1= FCAL, 4=BCAL, 32=TOF
 +
[[File:trigbits_rho.png]]
 
# GlueX Data Analysis
 
# GlueX Data Analysis
 
# CPP Simulations
 
# CPP Simulations
Line 65: Line 65:
  
 
== Minutes ==
 
== Minutes ==
'' Attending:
+
'' Attending: Alex, Andrew, David Horndige, David L., Elton, Ilya, Mark, Rory, Simon
 +
 
 +
# Previous CPP meeting: [[π polarizability Meeting Aug 25, 2021|Aug 25, 2021]]
 +
# Announcements
 +
#* Elton has almost finished creating a .bib file for Sergey's paper and will send that to Ilya later today.
 +
# Action Items
 +
#* Decided to stay at 10 am on Weds for our meetings. (Sorry Albert!)
 +
# Discussion: AI for Experimental Controls testing during CPP. See [https://mailman.jlab.org/pipermail/halld-cpp/2021-July/000294.html email from David]
 +
#* David and Kishan have received the first files from Andrew and will take a look at them. (See discussion below).
 +
# MWPC Testing
 +
#* [https://logbooks.jlab.org/entry/3898736 Log 3898736] Configuration Update (Alex)
 +
#* Beni, Alex and Elton updated the test setup in the EEL according to information in the log entry.
 +
#* [https://logbooks.jlab.org/entry/3899201 Log 3899201] Waveforms (Elton)
 +
#* Elton has taken a first look at waveforms.
 +
#* The take-away is that the F250 might be workable, but seems to have certain issues that need further investigating
 +
#* We may wish to increase the HV on the top pmts.
 +
#* The MWPC signals are reasonable, but a more sophisticated analysis is needed. Elton will work with Albert (and a new student Greg) to get this going
 +
# hdgeant4 updates (Mark)
 +
#* Some changes to the hdgeant4 have issues. The default has been restored to previous iteration, which should be fine for CPP.
 +
# TOF Trigger (Simon)
 +
#* Trigger bits for simulated ρ events (red= 1 bit in one plane, 2 in second; black = 2 bits in both planes)
 +
#** Trig bit 1= FCAL, 4=BCAL, 32=TOF
 +
[[File:trigbits_rho.png]]
 +
#* The trigger simulation is showing that data taken with the TOF1 configuration is about 70% of the fcal trigger. This is reasonable. Simon will check the behavior with a data file with the TOF2 configuration to be used with CPP.
 +
# GlueX Data Analysis (Andrew)
 +
#* Compared yield asymmetry calculated for Rory's generator (A = 0.58) and Richard's generator (A = 0.59). See to agree.
 +
#* The energy distributions between data and the two generators are not quite the same. However, the dependence on the asymmetry was checked by Richard to be small. Rory suggests that Andrew check this as well, but changes are probably small over the energy interval used.
 +
#* Rory commented on differences between the two generators, which seem to agree fairly well. Richard's generator contains some higher order corrections, but does not cover internal radiation, which is included at some level by Rory's generator.
 +
#* Alex said that he could start an analysis launch over the Fall 2018 data with an E/p>0.4 (instead of the nominal 0.7) after the present jobs are done. The reduced requirement allows Andrew to analyze pions and subtract them from his electron sample.
 +
# CPP Simulations (Andres)
 +
#* Andrew showed the trees produced with information that he is providing to David and Kishan for pid studies
 +
#* He was meeting with Simon following the meeting to understand how to add the single-hit fcal showers to the trees.
 +
#* Questions:
 +
#** What variable contained  the shower energy 
 +
#** Obtain a list of matched showers (not just all showers)
 +
#** Access to the single-hit showers on Simon's separate branch (as noted above).
 +
# PID + AI
 +
# Other business
 +
# Next meeting

Latest revision as of 14:53, 1 September 2021

Meeting Time And Location

10:00 EST (JLab time) Weekly Meeting

REMOTE during Covid-19

Connecting

You can connect using BlueJeans Video conferencing (ID: 949 429 419). (Click "Expand" to the right for details -->):

  1. Make sure you have created a BlueJeans account via your JLab CUE account using this link:

  2. Meeting ID: 949 429 419
    • (you may need to type this in, depending how you connect)

  3. If connecting via Web Browser: click this link (no passcode is needed):

  4. If connecting via iOS or Android App:
    • Use your JLab e-mail address to log in and then enter the meeting ID given above to join the meeting

  5. If connecting via Phone: Dial one of the following numbers and then enter the meeting ID above and hit "#" or "##"

  6. If connecting via Polycom unit:
    • Dial 199.48.152.152 or bjn.vc
    • Enter meeting ID above



Action Items

  1. Set time for future meetings.

Preliminary Agenda

  1. Previous CPP meeting: Aug 25, 2021
  2. Announcements
  3. Action Items
  4. Discussion: AI for Experimental Controls testing during CPP. See email from David
  5. MWPC Testing
  6. hdgeant4 updates (Beni and Simon)
  7. TOF Trigger (Simon)
    • Trigger bits for simulated ρ events (red= 1 bit in one plane, 2 in second; black = 2 bits in both planes)
      • Trig bit 1= FCAL, 4=BCAL, 32=TOF

Trigbits rho.png

  1. GlueX Data Analysis
  2. CPP Simulations
  3. PID + AI
  4. Other business
  5. Next meeting

Minutes

Attending: Alex, Andrew, David Horndige, David L., Elton, Ilya, Mark, Rory, Simon

  1. Previous CPP meeting: Aug 25, 2021
  2. Announcements
    • Elton has almost finished creating a .bib file for Sergey's paper and will send that to Ilya later today.
  3. Action Items
    • Decided to stay at 10 am on Weds for our meetings. (Sorry Albert!)
  4. Discussion: AI for Experimental Controls testing during CPP. See email from David
    • David and Kishan have received the first files from Andrew and will take a look at them. (See discussion below).
  5. MWPC Testing
    • Log 3898736 Configuration Update (Alex)
    • Beni, Alex and Elton updated the test setup in the EEL according to information in the log entry.
    • Log 3899201 Waveforms (Elton)
    • Elton has taken a first look at waveforms.
    • The take-away is that the F250 might be workable, but seems to have certain issues that need further investigating
    • We may wish to increase the HV on the top pmts.
    • The MWPC signals are reasonable, but a more sophisticated analysis is needed. Elton will work with Albert (and a new student Greg) to get this going
  6. hdgeant4 updates (Mark)
    • Some changes to the hdgeant4 have issues. The default has been restored to previous iteration, which should be fine for CPP.
  7. TOF Trigger (Simon)
    • Trigger bits for simulated ρ events (red= 1 bit in one plane, 2 in second; black = 2 bits in both planes)
      • Trig bit 1= FCAL, 4=BCAL, 32=TOF

Trigbits rho.png

    • The trigger simulation is showing that data taken with the TOF1 configuration is about 70% of the fcal trigger. This is reasonable. Simon will check the behavior with a data file with the TOF2 configuration to be used with CPP.
  1. GlueX Data Analysis (Andrew)
    • Compared yield asymmetry calculated for Rory's generator (A = 0.58) and Richard's generator (A = 0.59). See to agree.
    • The energy distributions between data and the two generators are not quite the same. However, the dependence on the asymmetry was checked by Richard to be small. Rory suggests that Andrew check this as well, but changes are probably small over the energy interval used.
    • Rory commented on differences between the two generators, which seem to agree fairly well. Richard's generator contains some higher order corrections, but does not cover internal radiation, which is included at some level by Rory's generator.
    • Alex said that he could start an analysis launch over the Fall 2018 data with an E/p>0.4 (instead of the nominal 0.7) after the present jobs are done. The reduced requirement allows Andrew to analyze pions and subtract them from his electron sample.
  2. CPP Simulations (Andres)
    • Andrew showed the trees produced with information that he is providing to David and Kishan for pid studies
    • He was meeting with Simon following the meeting to understand how to add the single-hit fcal showers to the trees.
    • Questions:
      • What variable contained the shower energy
      • Obtain a list of matched showers (not just all showers)
      • Access to the single-hit showers on Simon's separate branch (as noted above).
  3. PID + AI
  4. Other business
  5. Next meeting