Difference between revisions of "Π polarizability Meeting Jan 26, 2022"

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== Action Items ==
 +
 +
# Review CPP test run for rates (Ilya) and check with Sasha on steps for "replay"
 +
# Check with Hovanes and Alexandre on using JD103 diamond (Elton)
 +
# Check that Rory's grounding suggestions do not deteriorate the performance of Arwen using cosmics (Beni)
  
 
== Preliminary Agenda  ==
 
== Preliminary Agenda  ==
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#* [https://logbooks.jlab.org/entry/3966194 Log Entry 3966194] CPP Tests
 
#* [https://logbooks.jlab.org/entry/3966194 Log Entry 3966194] CPP Tests
 
#* [https://logbooks.jlab.org/entry/3966193 Log Entry 3966193] Run 90646
 
#* [https://logbooks.jlab.org/entry/3966193 Log Entry 3966193] Run 90646
−
# Microscope move (in progress)
 
 
# Software/Calibration for CPP (David, Alex and Sean)
 
# Software/Calibration for CPP (David, Alex and Sean)
−
# [https://docs.google.com/presentation/d/1HkMlIgEzZaNuDpH__7YXINmNYZvc78gLoMUoosmbWjs/edit?usp=sharing DFMWPCMatchedTrack]
+
#* [https://docs.google.com/presentation/d/1HkMlIgEzZaNuDpH__7YXINmNYZvc78gLoMUoosmbWjs/edit?usp=sharing DFMWPCMatchedTrack]
 +
# Microscope move (Richard)
 +
#* [https://halldweb.jlab.org/doc-private/DocDB/ShowDocument?docid=5420 Slides from Beamline Meeting Jan 19]
 +
#* [https://mailman.jlab.org/pipermail/halld-cpp/2022-January/000366.html Microscope Survey]
 
# PID + AI
 
# PID + AI
 
#* Data for AI (Andrew)
 
#* Data for AI (Andrew)
 
# [[CPP and NPP Readiness Review]]
 
# [[CPP and NPP Readiness Review]]
 
# MWPC Testing  
 
# MWPC Testing  
 +
#* Move to Hall D
 
#* [https://logbooks.jlab.org/book/hdfmwpc FMWPC Log Book]
 
#* [https://logbooks.jlab.org/book/hdfmwpc FMWPC Log Book]
 
# [[CPP and NPP Experiment Configuration]]
 
# [[CPP and NPP Experiment Configuration]]
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== Minutes ==
 
== Minutes ==
 +
''Attending: Alex A., Albert, David L, Mark, Nikhil, Ilya, Rory, Andrew, Simon, Beni, Elton, Richard
  
−
Present: Alex Austregesilo, Albert Fabrizi, David Hornidge, Mark Ito (chair), Nikhil Kalra, Ilya Larin, David Lawrence, Rory Miskimen, Andrew Schick, Simon Taylor, Beni Zihlmann
+
# Previous CPP meeting: [[%CE%A0_polarizability_Meeting_Jan_19,_2022|Jan 19, 2022]]
−
 
+
# Announcements
−
There is a (partial) [https://jlab-org.zoomgov.com/rec/share/8w89wZ1fWpv57x76H1Teu6glPerQCa5Ew1AVbII4g8sy9qnUrscdjF0AbuykwTW2.UbFFAtUx2xgOEW9u recording of this meeting] on the ZoomGov website. The passcode is !&C^z71c
+
#* Bluejeans being phased out between now and end of January. New system will be ZOOM.
−
 
+
# Action Items
−
 
+
# CPP-NPP trigger
−
=== Action Items ===
+
#* [https://logbooks.jlab.org/entry/3966089 Log Entry 3966089] Swing Shift Summary 12/19/2021
−
 
+
#* [https://logbooks.jlab.org/entry/3966194 Log Entry 3966194] CPP Tests
−
We reviewed the action items.
+
#* [https://logbooks.jlab.org/entry/3966193 Log Entry 3966193] Run 90646
−
 
+
# Software/Calibration for CPP (David, Alex and Sean)
−
==== Generate MC samples of pi+pi- ====
+
#* [https://docs.google.com/presentation/d/1HkMlIgEzZaNuDpH__7YXINmNYZvc78gLoMUoosmbWjs/edit?usp=sharing DFMWPCMatchedTrack]
−
 
+
#* David is considering various options for engineered features to use as inputs to use in the mu/pi PID evaluation
−
David L. reported that he and Andrew have put together a directory on the work disk,
+
#* He presented two options; one using clusters in FCAL and FMWPC determined independently and then linked to tracks and second using the track to guide collection of hits/clusters in the other detectors.
−
 
+
#* Many questions were asked and suggestions offered. Effort is ongoing.
−
/work/halld/CPP/MC/generated
+
# Microscope move (Richard)
−
 
+
#* [https://halldweb.jlab.org/doc-private/DocDB/ShowDocument?docid=5420 Slides from Beamline Meeting Jan 19]
−
containing three directories at present:
+
#* [https://mailman.jlab.org/pipermail/halld-cpp/2022-January/000366.html Microscope Survey]
−
 
+
#* James McIntyre has pass on the baton to Daniel Prather by setting up the microscope from scratch. Daniel will be responsible for moving it back to the 9 GeV position for GlueX after CPP.
−
BHgen_electron_positron
+
#* There are now only 96 columns (down from 102) because they do not fit in the new extended configuration. (Last 6 columns will read background.)
−
BHgen_muons
+
#* The hodoscope scintillators that parallel the microscope cover energies in the 7 GeV range due to the small crossing angle, so both detectors should be installed in that area.  
−
gen_2pi_primakoff
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#* To work on the microscope the hodoscope plate was removed and needs to be reinstalled.
−
 
+
#* All electronics is now working (some channels fixed).
−
There are samples of generated events in each of these directories that can be used for studies and for benchmarks of future CPP reconstruction and analysis code.
+
#* Chris Stanislav shadowed the operation and is familiar with the setup.
−
 
+
# Diamond for CPP (Richard)
−
=== Make a pull request for hdds ===
+
#* The plan is to use JD103. However, the optimum location for the beam has not been identified, but should be able to be determined in software from the light source data convoluted with the beam profile. This will save Hovanes time in scanning the diamond.
−
 
+
#* Richard is willing to produce a tool that can be run systematically over the area of the diamond. He will present a plan at the next CPP meeting.
−
Simon reported that Elton merged the pull request last week. In addition he got new numbers for the MWPCs from Stephanie Worthington and has put the updated geometry into the CCDB.
+
# PID + AI
−
 
+
#* Data for AI (Andrew)
−
=== Review CPP test run for rates and check with Sasha on steps for "replay" ===
+
#* Andrew noted that the new software builds are allowing him to process events
−
 
+
# [[CPP and NPP Readiness Review]]
−
Ilya showed slides on his first look at the trigger test data taken at the end of the SRC run. He is having trouble analyzing the data. Beni and David will have a look to see if they can retrieve the trigger bits from the events. See [https://userweb.jlab.org/~ilarin/cpp/1221m10/rcdb.m10.pdf his slides] for more details.
+
# MWPC Testing
−
 
+
#* Move to Hall D
−
Beni also mentioned that when he balanced the gains for the TOF recently, the average gain was a bit higher than before. This effectively lower energy threshold may account for the increase in rate that Ilya saw.
+
#* [https://logbooks.jlab.org/book/hdfmwpc FMWPC Log Book]
−
 
+
#* Beni has taken data (R202) with Arwen and the new LV cable with the different grounding connection.  
−
=== Check with Hovanes and Alexandre on using JD103 diamond ===
+
#* He has looked at the baseline and it shows shifts that need to be looked at further
−
 
+
#* Elton will also take a look at the run and compare with previous analysis of Arwen.
−
Rory reported on the recent email exchange that Elton Smith initiated. It looks like the only option we have at this point is to use the JD70-103 diamond. Tim sent around a photo showing it on the goniometer stage. The consensus is that the the coherent edge from this diamond may not be very sharp, but that it can provide adequate polarization to do the experiment. Richard Jones has suggested a calculation where data from a run at the light source is convolved with a typical electron beam profile to calculate the polarization we expect. Rory will follow up with Richard on what is involved in doing this calculation.
+
#* We need to evaluate the new cable configuration before moving the the hall.
−
 
+
# [[CPP and NPP Experiment Configuration]]
−
=== Check that Rory's grounding suggestions do not deteriorate the performance of Arwen using cosmics ===
+
# Electronic Configuration (Beni)
−
 
+
#* The TDC readout for the CPP scintillators may be problematic because a new CAEN TDC requires inputs from a distribution module. This needs to be checked.
−
Beni reported on activities with the test set up in the EEL. On earlier in the week he got the gas turned on and the DAQ system running. We have been taking data since yesterday morning at about 20 Hz. He sees nice signals in the monitoring plots. Next Wednesday we may need to change the gas bottle. One mystery: he is not seeing action on the output bubbler.
+
#* Rory: Trigger based on CPP scintillators would be useful for checking the experiment trigger based on the TOF by triggering on muons.
−
 
+
#** Beni: Using the Flashes to develop a trigger is not practical (requires firmware). However, a simple trigger obtained using extra pmt signals and NIM electronics could be used as a front panel trigger. Beni will investigate with Fernando and Nick.  
−
=== Microscope move (in progress) ===
+
# CPP Software (Mark and Simon)
−
 
+
#* Mark has successfully built hdgeant4 against the CPP branch. See [https://mailman.jlab.org/pipermail/halld-offline/2022-January/008746.html email to halld-offline mail list]
−
No one has heard any news from the UConn crew. The consensus was that this should be interpreted as good news.
+
#* Simon has submitted a pull request to merge the CPP branch into the master. Sean has comments/suggestions that Simon is addressing.
−
 
+
#* Mark: Notes that changes by David to the CPP branch will also merge with this pull request. David: Even though this is a work in progress  "It should not break anything."
−
=== PID + AI ===
+
# GlueX Data Analysis
−
 
+
# CPP Simulations
−
David ran the 10 k $pi;$pi; events through his machinery to produce input for Nikhil to chew on. This happened just yesterday.
+
# Other business
−
 
+
# Next meeting
−
=== CPP and NPP Readiness Review ===
+
−
 
+
−
Final certification of readiness has been granted by Physics management.
+
−
 
+
−
=== [[CPP and NPP Experiment Configuration]] ===
+
−
 
+
−
We skimmed the [[CPP and NPP Experiment Configuration document]].
+
−
 
+
−
Beni reported that the cutting of the cable trays on the forward platform was underway when he was in the Hall yesterday.
+
−
 
+
−
=== Electronic Configuration ===
+
−
 
+
−
Beni gave us an update on electronics for the chambers and the new scintillators.
+
−
 
+
−
* There are plenty of FADC channels for the eight PMTs
+
−
* There are also lots of discriminator channels available.
+
−
* TDCs are an issue
+
−
** They need an additional connection to the trigger module[?].
+
−
* The bottom CAEN HV mainframe has four slots for the DIRC. The plan is to use two of these for chamber HV (requires board replacement) and the other two for the scintillators.
+
−
** Nick Sandoval has test stands appropriate for both high and low voltage.
+
−
 
+
−
 
+
−
Rory brought up the idea of a scintillator-only trigger that could be used for diagnostics for the chambers. Such a trigger might yield a nice sample of muon pairs. Beni noted that there was already a NIM crate on the forward carriage that could be used to form a front-panel trigger. Though not simple, we thought that it was within the realm of possibility and the idea should be explored further.
+
−
 
+
−
=== Software consolidation ===
+
−
 
+
−
Simon submitted a pull request to merge the CPP branch of halld_recon onto the master. Sean Dobbs had several suggestions and Simon is responding to them. For details, see the [https://github.com/JeffersonLab/halld_recon/pull/616 conversation on GitHub].
+
−
 
+
−
=== Next meeting ===
+
−
 
+
−
We decided that we should have one. ;-)
+

Latest revision as of 18:42, 26 January 2022

Meeting Time And Location

09:30 EST (JLab time) Weekly Meeting

REMOTE during Covid-19

Connecting

Join ZoomGov Meeting
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Passcode: CPP 

Elton Smith is inviting you to a scheduled ZoomGov meeting.

Topic: CPP Weekly Meeting
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Action Items

  1. Review CPP test run for rates (Ilya) and check with Sasha on steps for "replay"
  2. Check with Hovanes and Alexandre on using JD103 diamond (Elton)
  3. Check that Rory's grounding suggestions do not deteriorate the performance of Arwen using cosmics (Beni)

Preliminary Agenda

  1. Previous CPP meeting: Jan 19, 2022
  2. Announcements
    • Bluejeans being phased out between now and end of January. New system will be ZOOM.
  3. Action Items
  4. CPP-NPP trigger
  5. Software/Calibration for CPP (David, Alex and Sean)
  6. Microscope move (Richard)
  7. PID + AI
    • Data for AI (Andrew)
  8. CPP and NPP Readiness Review
  9. MWPC Testing
  10. CPP and NPP Experiment Configuration
  11. Electronic Configuration (Beni)
  12. hdgeant4 updates (Mark)
  13. Software consolidation (Simon)
  14. GlueX Data Analysis
  15. CPP Simulations
  16. Other business
  17. Next meeting

Minutes

Attending: Alex A., Albert, David L, Mark, Nikhil, Ilya, Rory, Andrew, Simon, Beni, Elton, Richard

  1. Previous CPP meeting: Jan 19, 2022
  2. Announcements
    • Bluejeans being phased out between now and end of January. New system will be ZOOM.
  3. Action Items
  4. CPP-NPP trigger
  5. Software/Calibration for CPP (David, Alex and Sean)
    • DFMWPCMatchedTrack
    • David is considering various options for engineered features to use as inputs to use in the mu/pi PID evaluation
    • He presented two options; one using clusters in FCAL and FMWPC determined independently and then linked to tracks and second using the track to guide collection of hits/clusters in the other detectors.
    • Many questions were asked and suggestions offered. Effort is ongoing.
  6. Microscope move (Richard)
    • Slides from Beamline Meeting Jan 19
    • Microscope Survey
    • James McIntyre has pass on the baton to Daniel Prather by setting up the microscope from scratch. Daniel will be responsible for moving it back to the 9 GeV position for GlueX after CPP.
    • There are now only 96 columns (down from 102) because they do not fit in the new extended configuration. (Last 6 columns will read background.)
    • The hodoscope scintillators that parallel the microscope cover energies in the 7 GeV range due to the small crossing angle, so both detectors should be installed in that area.
    • To work on the microscope the hodoscope plate was removed and needs to be reinstalled.
    • All electronics is now working (some channels fixed).
    • Chris Stanislav shadowed the operation and is familiar with the setup.
  7. Diamond for CPP (Richard)
    • The plan is to use JD103. However, the optimum location for the beam has not been identified, but should be able to be determined in software from the light source data convoluted with the beam profile. This will save Hovanes time in scanning the diamond.
    • Richard is willing to produce a tool that can be run systematically over the area of the diamond. He will present a plan at the next CPP meeting.
  8. PID + AI
    • Data for AI (Andrew)
    • Andrew noted that the new software builds are allowing him to process events
  9. CPP and NPP Readiness Review
  10. MWPC Testing
    • Move to Hall D
    • FMWPC Log Book
    • Beni has taken data (R202) with Arwen and the new LV cable with the different grounding connection.
    • He has looked at the baseline and it shows shifts that need to be looked at further
    • Elton will also take a look at the run and compare with previous analysis of Arwen.
    • We need to evaluate the new cable configuration before moving the the hall.
  11. CPP and NPP Experiment Configuration
  12. Electronic Configuration (Beni)
    • The TDC readout for the CPP scintillators may be problematic because a new CAEN TDC requires inputs from a distribution module. This needs to be checked.
    • Rory: Trigger based on CPP scintillators would be useful for checking the experiment trigger based on the TOF by triggering on muons.
      • Beni: Using the Flashes to develop a trigger is not practical (requires firmware). However, a simple trigger obtained using extra pmt signals and NIM electronics could be used as a front panel trigger. Beni will investigate with Fernando and Nick.
  13. CPP Software (Mark and Simon)
    • Mark has successfully built hdgeant4 against the CPP branch. See email to halld-offline mail list
    • Simon has submitted a pull request to merge the CPP branch into the master. Sean has comments/suggestions that Simon is addressing.
    • Mark: Notes that changes by David to the CPP branch will also merge with this pull request. David: Even though this is a work in progress "It should not break anything."
  14. GlueX Data Analysis
  15. CPP Simulations
  16. Other business
  17. Next meeting
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