Difference between revisions of "Pi0 Polarizability Meeting Mar 12, 2021"
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# Action Items | # Action Items | ||
# Theory Update | # Theory Update | ||
− | # [https://userweb.jlab.org/~ilarin/npp/ | + | # [https://userweb.jlab.org/~ilarin/npp/gevs_031221.pdf Calculations by Sergey Gevorkyan] |
# [[Media:Gevorkyan PRC80(2009)055201.pdf | Gevorkyan et al PRC 80 (2009) 055201]] | # [[Media:Gevorkyan PRC80(2009)055201.pdf | Gevorkyan et al PRC 80 (2009) 055201]] | ||
# Experiment Update | # Experiment Update | ||
Line 56: | Line 56: | ||
= Minutes = | = Minutes = | ||
− | ''Attending: | + | ''Attending: Elton, Ilya, Rory, Beni, Mark |
+ | |||
+ | # Announcements | ||
+ | # Action Items | ||
+ | # Theory Update | ||
+ | # [https://userweb.jlab.org/~ilarin/npp/gevs_031221.pdf Calculations by Sergey Gevorkyan] | ||
+ | #* Ilya uploaded a new version of Sergey's draft. | ||
+ | #* Sergey has added a new Section 4 on 2pi0 production by charge exchange from primary the pi+pi- production | ||
+ | #* References have been updated. | ||
+ | #* There are still some question marks in the text, which Ilya will review with Sergey, | ||
+ | #* Rory will read the updated document this weekend | ||
+ | #* Ilya will try to resolve questions with Sergey and produce a new draft that he and Elton can edit for clarity. The updated draft can then be made available for more feedback. | ||
+ | # [[Media:Gevorkyan PRC80(2009)055201.pdf | Gevorkyan et al PRC 80 (2009) 055201]] | ||
+ | # Experiment Update | ||
+ | # [[CPP and NPP Readiness Review]] | ||
+ | # Simulation progress | ||
+ | #* Beni found a bug in hdgeant4that prevented hits from being generated. A pull request has been submitted to fix this problem. | ||
+ | #* The hdgeant4 geometry has eight MWPCs, a legacy from the proposal design. Beni will update the geometry xml files | ||
+ | #* Rory: How is the charge from the MWPCs generated in hdgeant4? Beni (After some discussion): Energies in the gas are calculated by hdgeant4 and summed into a cell energy if they fall within a time window of 400 ns. Otherwise multiple hits are generated. The simulated charge in the FADC125 channel is proportional to this energy. These "truth hits" are generated in hdgeant4; "measured hits" are generated by mcsmear. At the moment it simply copies the truth information into the FMhits. | ||
+ | #* The pitch of the wires is 0.4" = 1.016 cm. | ||
+ | # Trigger | ||
+ | # Other business | ||
+ | #* Rory: Jose did a lot of work to support the proposal. We should make sure that documentation for that effort is completed for future reference. Does he intend to publish the results? | ||
+ | # Next meeting |
Latest revision as of 17:33, 12 March 2021
Contents
Meeting Information
Meeting Time And Location
11:00 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:
- http://jlab.bluejeans.com (You should only need to do this once)
- Meeting ID: 949 429 419
- (you may need to type this in, depending how you connect)
- If connecting via Web Browser: click this link (no passcode is needed):
- 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
- If connecting via Phone: Dial one of the following numbers and then enter the meeting ID above and hit "#" or "##"
- Dial: (408) 740-7256 (US or Canada only)
- or, List of International Numbers
- If connecting via Polycom unit:
- Dial 199.48.152.152 or bjn.vc
- Enter meeting ID above
Action Items
Tentative Agenda
- Announcements
- Action Items
- Theory Update
- Calculations by Sergey Gevorkyan
- Gevorkyan et al PRC 80 (2009) 055201
- Experiment Update
- CPP and NPP Readiness Review
- Trigger
- Other business
- Next meeting
Minutes
Attending: Elton, Ilya, Rory, Beni, Mark
- Announcements
- Action Items
- Theory Update
- Calculations by Sergey Gevorkyan
- Ilya uploaded a new version of Sergey's draft.
- Sergey has added a new Section 4 on 2pi0 production by charge exchange from primary the pi+pi- production
- References have been updated.
- There are still some question marks in the text, which Ilya will review with Sergey,
- Rory will read the updated document this weekend
- Ilya will try to resolve questions with Sergey and produce a new draft that he and Elton can edit for clarity. The updated draft can then be made available for more feedback.
- Gevorkyan et al PRC 80 (2009) 055201
- Experiment Update
- CPP and NPP Readiness Review
- Simulation progress
- Beni found a bug in hdgeant4that prevented hits from being generated. A pull request has been submitted to fix this problem.
- The hdgeant4 geometry has eight MWPCs, a legacy from the proposal design. Beni will update the geometry xml files
- Rory: How is the charge from the MWPCs generated in hdgeant4? Beni (After some discussion): Energies in the gas are calculated by hdgeant4 and summed into a cell energy if they fall within a time window of 400 ns. Otherwise multiple hits are generated. The simulated charge in the FADC125 channel is proportional to this energy. These "truth hits" are generated in hdgeant4; "measured hits" are generated by mcsmear. At the moment it simply copies the truth information into the FMhits.
- The pitch of the wires is 0.4" = 1.016 cm.
- Trigger
- Other business
- Rory: Jose did a lot of work to support the proposal. We should make sure that documentation for that effort is completed for future reference. Does he intend to publish the results?
- Next meeting