Difference between revisions of "Pi0 Polarizability Meeting Nov 6, 2020"
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− | ''Attending: | + | ''Attending: Alex, Mark, Beni, Ilya, Rory, Elton |
+ | |||
+ | # Announcements | ||
+ | # Action Items | ||
+ | #* Mark promised to have an update on incoherent backgrounds by the next meeting | ||
+ | # Theory Update | ||
+ | # [https://userweb.jlab.org/~ilarin/npp/gevs_061220.pdf Calculations by Sergey Gevorkyan] | ||
+ | #* Elton had a quick on the draft and Rory commented on the paper | ||
+ | #* It is a nice summary of the processes that are of interest to us | ||
+ | #* The basic formulas are derived but some variables need clear definitions. These will be passed on to Ilya offline. | ||
+ | #* Ilya: Serguei is looking for collaborators to fill out the paper, including making numerical calculations. | ||
+ | #* Ilya will dust off the FF calculations for the pi0 and see how to apply them to this reaction. | ||
+ | #* Elton is willing to help out. | ||
+ | # Readiness Review | ||
+ | #* Tentatively, we had discussed trying to schedule a Readiness Review early next year. | ||
+ | #* Eugene has tentatively considered putting CPP on the schedule for 2022. | ||
+ | #* Elton will coordinate with Tim to schedule our next CPP meeting for Thursday Nov 19 at 2 pm. | ||
+ | # Trigger | ||
+ | #* We need to have a discussion with Sasha regarding what needs to be done for the trigger. Rory suggested that we use the time for the CPP meeting on Wed for a discussion. Ilya will contact Sasha to check his schedule. | ||
+ | #* Elton: Consider multiple TOF configurations running simultaneously. | ||
+ | #* Need to adjust thresholds for TOF trigger. Beni: A single threshold setting covers many counters, so the response must be equalized. He is concerned there is a rate dependence of the gains, which needs to be understood. We can use the CPP data at low current (20, 40 nA) and compare with GlueX data. | ||
+ | #* Beni: The nominal threshold is 25 mV. | ||
+ | #* The FCAL response also needs to be equalized for the NPP trigger, and we prefer the lowest possible threshold consistent with an acceptable rate. | ||
+ | # Other business | ||
+ | # Next meeting | ||
+ | #* Friday, Nov 20 at 11 am. |
Latest revision as of 12:17, 6 November 2020
Contents
Meeting Information
Meeting Time And Location
10:00 am ET (JLab time)
REMOTE
Connecting
You can connect using BlueJeans Video conferencing (ID: 949 429 419). (Click "Expand" to the right for details -->):
- Make sure you have created a BlueJeans account via your JLab CUE account using this link:
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- Meeting ID: 949 429 419
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- Enter meeting ID above
Action Items
- ChiPT calculation to one loop with Coulomb photon (Svetlana and Aleks)
- BGGEN simulations of incoherent backgrounds (Mark)
- Provide feedback to Sergey and Ilya on the draft and calculations (Elton, Rory,...)
Tentative Agenda
- Announcements
- Action Items
- Theory Update
- Beam Test
- Other business
- Next meeting
Minutes
Attending: Alex, Mark, Beni, Ilya, Rory, Elton
- Announcements
- Action Items
- Mark promised to have an update on incoherent backgrounds by the next meeting
- Theory Update
- Calculations by Sergey Gevorkyan
- Elton had a quick on the draft and Rory commented on the paper
- It is a nice summary of the processes that are of interest to us
- The basic formulas are derived but some variables need clear definitions. These will be passed on to Ilya offline.
- Ilya: Serguei is looking for collaborators to fill out the paper, including making numerical calculations.
- Ilya will dust off the FF calculations for the pi0 and see how to apply them to this reaction.
- Elton is willing to help out.
- Readiness Review
- Tentatively, we had discussed trying to schedule a Readiness Review early next year.
- Eugene has tentatively considered putting CPP on the schedule for 2022.
- Elton will coordinate with Tim to schedule our next CPP meeting for Thursday Nov 19 at 2 pm.
- Trigger
- We need to have a discussion with Sasha regarding what needs to be done for the trigger. Rory suggested that we use the time for the CPP meeting on Wed for a discussion. Ilya will contact Sasha to check his schedule.
- Elton: Consider multiple TOF configurations running simultaneously.
- Need to adjust thresholds for TOF trigger. Beni: A single threshold setting covers many counters, so the response must be equalized. He is concerned there is a rate dependence of the gains, which needs to be understood. We can use the CPP data at low current (20, 40 nA) and compare with GlueX data.
- Beni: The nominal threshold is 25 mV.
- The FCAL response also needs to be equalized for the NPP trigger, and we prefer the lowest possible threshold consistent with an acceptable rate.
- Other business
- Next meeting
- Friday, Nov 20 at 11 am.