Difference between revisions of "Π polarizability Meeting Jun 22, 2022"

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(Minutes)
(Minutes)
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#* [https://logbooks.jlab.org/entry/4005395 Toy Study of Empty Target Statistics] (Elton)
 
#* [https://logbooks.jlab.org/entry/4005395 Toy Study of Empty Target Statistics] (Elton)
 
#* [https://halldweb.jlab.org/doc-private/DocDB/ShowDocument?docid=5445 GlueX-doc-5445] Optimization of empty target running (Eugene)
 
#* [https://halldweb.jlab.org/doc-private/DocDB/ShowDocument?docid=5445 GlueX-doc-5445] Optimization of empty target running (Eugene)
 +
#* The various approaches to estimate the optimal seem consistent.
 +
#* Assuming that one runs at a relative intensity of empty/full ~ 2, we need to devote about ~15% of the time, collecting about 10% of events from the target region during empty target running. We decided that we should take a current scan with empty target to check rates in tagger and verify that trigger rates are acceptable.
 +
#* We discussed how much amorphous radiator running we should take. The main argument for collecting amorphous running is to be able to normalize the coherent spectrum and check systematics of the polarization. Elton will send out an email to Hovanes, Mike Dugger and others to get feedback on how much data is needed. The present guess is about 5%(?)
 
#* Allocations for Empty and Amorphous running
 
#* Allocations for Empty and Amorphous running
 
# Software/Calibration, Simulations
 
# Software/Calibration, Simulations

Revision as of 16:36, 22 June 2022

09:30 EST (JLab time) Weekly Meeting

REMOTE during Covid-19

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Action Items

Preliminary Agenda

  1. Previous CPP meeting: Jun 15, 2022
  2. Previous CPP Software meeting: Π polarizability Software Meeting May 5, 2022
  3. Announcements
  4. Action Items
  5. Spread Sheet with Run List (Albert)
  6. Software/Calibration, Simulations
    • hdview2 event display (David)
    • FMWPC matching (Alex)
  7. Photon beam / tagger / diamonds
  8. DAQ and Electronic Setup (Sergey and Beni)
  9. CPP-NPP Trigger
    • Change TOF to 2 AND 2 (not possible with current firmware)
    • Add TOF 3 hits prescaled
    • Double the prescale on the CTOF trigger
  10. MWPCs
  11. CPP and NPP Experiment Configuration
  12. Documentation
  13. Other business
  14. Next meeting

Minutes

Attending: Alex, Andrew, Beni, David L., Elton, Ilya, Mark, Naomi, Nikhil, Rory, Simon

  1. Previous CPP meeting: Jun 15, 2022
  2. Previous CPP Software meeting: Π polarizability Software Meeting May 5, 2022
  3. Announcements
  4. Action Items
  5. Spread Sheet with Run List (Albert)
    • List of production runs
    • Toy Study of Empty Target Statistics (Elton)
    • GlueX-doc-5445 Optimization of empty target running (Eugene)
    • The various approaches to estimate the optimal seem consistent.
    • Assuming that one runs at a relative intensity of empty/full ~ 2, we need to devote about ~15% of the time, collecting about 10% of events from the target region during empty target running. We decided that we should take a current scan with empty target to check rates in tagger and verify that trigger rates are acceptable.
    • We discussed how much amorphous radiator running we should take. The main argument for collecting amorphous running is to be able to normalize the coherent spectrum and check systematics of the polarization. Elton will send out an email to Hovanes, Mike Dugger and others to get feedback on how much data is needed. The present guess is about 5%(?)
    • Allocations for Empty and Amorphous running
  6. Software/Calibration, Simulations
    • hdview2 event display (David)
    • FMWPC matching (Alex)
  7. Photon beam / tagger / diamonds
  8. DAQ and Electronic Setup (Sergey and Beni)
  9. CPP-NPP Trigger
    • Change TOF to 2+2 (not possible with current firmware)
    • Add TOF 3 hits prescaled
    • Double the prescale on the CTOF trigger
  10. MWPCs
  11. CPP and NPP Experiment Configuration
  12. Documentation
  13. Other business
  14. Next meeting