Difference between revisions of "Meeting solid ec"

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The EC design weekly meeting minutes have been migrated to the old-fashioned HTML page: [https://hallaweb.jlab.org/wiki/index.php/Http://hallaweb.jlab.org/experiment/PVDIS/SoLID/EC/meetings/SoLID_EC_Weekly_minutes.html  All EC meetings in 2013 ]
+
=ECal weekly May 2025 =
 +
* Weekly ECal May 8, 2025
 +
** Ye's slides on comparison of preCDR vs. latest simulation. Note that the preCDR plot (on 2D plane energy vs. R, reproduced by Ye) is for e.g. "pi- from pi-" while the latest simulation is "everything from pi-". Even though the plots are for different things, it seems to contradict the table that the latest simulation gives much higher radiation background.
 +
** Zhiwen will dig into how Jin extracted radiation dose from the particle rate plots.
 +
** We discussed the labor cost of large-angle ECal and SPD assembly and testing. Here is Richard's estimate, consistent with 2023 estimate of 744 PW scaled by area of 440/1800.
  
−
==ECal weekly 2023==
+
* Weekly ECal May 1, 2025
 +
** Ye worked out a way to extract the z-dependence of Edep in the Preshower and Shower. Counting the whole preshower as a layer, the radiation is pretty high. On the other hand, the radiation in the Shower layers does not look much worse than preCDR, though the exact z-dependence is different. See her presentation: [https://solid.jlab.org/wiki/images/6/6d/PVDIS_simulation_configuration_comparison_04302025.pdf PVDIS_simulation_configuration_comparison_04302025.pdf]. Note that the radiation dose of the preshower needs to be integrated over the preshower's Z (slides 2 left, 8, and 9 left).
 +
** Jianping suggested re-visting low-energy pion comparison of bggen vs. wiser, i.e. DVCS and MARATHON data analyzed by Ye Tian (IMP) and Zhihong. -- followup on 5/8: Ye dig out the old slide but that study stopped at 2GeV for the pion momentum (minimum).
 +
** Mike and Richard talked to Carl about benchtesting the Shower PMTs, to be followed by MAPMT and MCP-PMT tests.
 +
** Darren gave a [https://solid.jlab.org/wiki/images/8/87/SoLID_ECal_-_ML_PID_-_01_May.pdf presentation SoLID ECal ML PID] on the latest status (from Nov. 2024) of AI/ML PID study. Recap:
 +
*** the study was done using simulation without background, then applied to data
 +
*** e vs. pi0: ML output could reject pi0's (since probability of pi0 is always < 0.5)
 +
*** applying ML to data, we see pi+, pi- and e ID in the output
 +
*** ML-ID'ed e- and pi+ or pi- preshower, ShSum from data agree with simulation very well
 +
*** ECal resolution: had to add by hand about 35% for PSH, 10% for SH
 +
*** one result is ML PID charged pion rejection vs. e- efficiency -- something comparable to classical PID
 +
*** the only thing missing was background simulation!
  
 +
=ECal weekly April 2025 =
 +
* Weekly ECal April 10, 2025
 +
** LHCb tracker upgrade, Table 3.4. (Note 1Gy = 100rad)
 +
 +
=ECal weekly March 2025 =
 +
* Weekly ECal March 27, 2025
 +
** Ye showed comparison of Jin's preCDR and latest study. Checking particle entering ECal. Large difference already between Jin's and "THis study"  using short endcap and Babar baffle. This means the difference is in the generator (or the interpretation), not the endcap and magnet.
 +
 +
 +
=ECal weekly February 20, 2025 =
 +
* [https://solid.jlab.org/wiki/images/8/80/SoLID_PID_2_20_2025.pdf Mike's PID update]. Some discussions:
 +
** JP: what are the uncertainties in the preshower and Shower calibration? -> Ye and Mike need to find the uncertainty. Ben's plot may be more precise
 +
** Ye: there is also a 65uA (4409) run
 +
** JP: there should also be a Preshower cut
 +
 +
* Question arose how the preshower radiation dose is 3 times higher now (SOLID PVDIS) vs. preCDR value...!
 +
** JP: there was a study of Fluka va. GEANT by Lorenzo Zana before the Science Review, need to dig this out
 +
** We need to vet the statements of *3 and *5 estimate (how much SoLID PVDIS is higher than the beam test in terms of radiation dose in the ECal modules, currently in the report)
 +
 +
* Comments on the report draft:
 +
** FADC timing should not be in the Shower section
 +
 +
=ECal weekly March 2024 to December 2024 =
 +
 +
* Weekly ECal October 31, 2024
 +
** Ben started analyzing the THU base. Here is his [https://solid.jlab.org/wiki/images/1/10/SoLID_ECAL_PMT_THUDividers.ods Calculation on all three PMT bases]
 +
** Zhihong shared pictures of the super-module being assembled at THU: [https://solid.jlab.org/wiki/images/d/d9/THU_supermodule_20241031_image0.jpg pic0], [https://solid.jlab.org/wiki/images/f/fe/THU_supermodule_20241031_image1.jpg pic1], [https://solid.jlab.org/wiki/images/6/62/THU_supermodule_20241031_image2.jpg pic2];  He will also send a new PMT base design diagram (for the super module) so we can study its possible gain shift in advance
 +
** Zhihong will look if there are old PMTs with the same base as the 2023 Hall C beamtest, and will do a bench test to study the gain shift if any such PMT/base is found.
 +
** Xiaochao shared a rough draft of the beam test report. Still need to wrap up some calculation, and need someone to double check all numbers.
 +
 +
* Weekly ECal September 05, 2024
 +
**Ben Raydo's [https://solid.jlab.org/wiki/images/6/63/SoLID_Calorimeter_PMT_linearity.pdf presentation on SDU Shower PMT anode current gain analysis]
 +
 +
* SoLID [https://indico.phy.anl.gov/event/51 Science Workshop and Collaboration Meeting June 17-22, 2024]
 +
** [https://indico.phy.anl.gov/event/51/contributions/263/attachments/200/548/Solid%20Collaboration%202024%20Argonne.pdf Mike's presentation on overview of beamtest analysis]
 +
** [https://indico.phy.anl.gov/event/51/contributions/264/attachments/197/545/06212024_collaboration_meeting_Ye.pdf Ye's presentation on overview of beamtest simulation (including rates) and GEM analysis]
 +
** [https://indico.phy.anl.gov/event/51/contributions/279/attachments/205/562/ECal_SPD_2024.pdf Richard's presentation on plan of ECal readout R&D]
 +
** [https://indico.phy.anl.gov/event/51/contributions/272/attachments/214/573/20240622Ecal%20Progress.pptx Dong's presentation on ECal SDU update (including material non-uniformity)]
 +
 +
=ECal weekly March 2023 to February 2024 =
 +
* [[SoLID Ecal Weekly 2024215| Weekly ECal February 15, 2024]]
 +
 +
* SoLID [https://indico.jlab.org/event/757/ Collaboration Meeting December 7-8, 2023]
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** [https://indico.jlab.org/event/757/contributions/13719/attachments/10529/15848/Michael_Nycz_Beam_Test_Update.pdf Mike's presentation on overview of beamtest analysis (including charged pion PID)]
 +
** [https://indico.jlab.org/event/757/contributions/13722/attachments/10530/15855/12072023_collaboration_meeting_Ye.pdf Ye's presentation on overview of simulation and radiation dose]
 +
** also relevant [https://indico.jlab.org/event/757/contributions/13732/attachments/10533/15858/SOLID_LAPPD.pdf Simona's presentation on LAPPD R&D]
 +
 +
* [[SoLID Ecal Weekly 20231214| Weekly ECal December 14, 2023]]
 +
**Shower PMT information
 +
* [[SoLID Ecal Weekly 20231019| Weekly ECal October 19, 2023]]
 +
* [[SoLID Ecal Weekly 20231012| Weekly ECal October 12, 2023 (+ China)]]
 +
* [[SoLID Ecal Weekly 20231005| Weekly ECal October 5, 2023]]
 +
* [[SoLID Ecal Weekly 20230831| Weekly ECal August 31, 2023]]
 +
* [[SoLID Ecal Weekly 20230824| Weekly ECal August 24, 2023]]
 +
**Darren's summer 2023 report (SoLID beamtest ML PID Upton.pdf) [https://solid.jlab.org/cgi-bin/private/ShowDocument?docid=495 | SoLID doc#495]
 +
**Spencer's summer 2023 report [https://solid.jlab.org/wiki/images/6/65/SoLID_beamtest_classical_PID_Opatrny.pdf|SoLID beamtest classical PID Opatrny.pdf ] or [https://solid.jlab.org/cgi-bin/private/ShowDocument?docid=496 | SoLID doc#496]
 +
* [[SoLID Ecal Weekly 20230818| Weekly ECal August 18, 2023]]
 +
* [[SoLID Ecal Weekly 20230810| Weekly ECal August 10, 2023]]
 +
* [[SoLID Ecal Weekly 20230803| Weekly ECal August 3, 2023]]
 +
* [[SoLID Ecal Weekly 20230727| Weekly ECal July 27, 2023]]
 +
* [[SoLID Ecal Weekly 20230720| Weekly ECal July 20, 2023]]
 +
* [[SoLID Ecal Weekly 20230713| Weekly ECal July 13, 2023]]
 +
* [[SoLID Ecal Weekly 20230706| Weekly ECal July 6, 2023]]
 +
* [[SoLID Ecal Weekly 20230629| Weekly ECal June 29, 2023]]
 +
* [[SoLID Ecal Weekly 20230622| Weekly ECal June 22, 2023]]
 +
* [[SoLID Ecal Weekly 20230615| Weekly ECal June 15, 2023]]
 +
* [[SoLID Ecal Weekly 20230608| Weekly ECal June 8, 2023]]
 +
* [[SoLID Ecal Weekly 20230601| Weekly ECal June 1, 2023]]
 +
**[https://solid.jlab.org/wiki/index.php/SoLID_Ecal_Weekly_20230601#Discussion_on_LASPD_Timing_Analysis_Plan Rough plan for LASPD timing extraction]
 +
* [[SoLID Ecal Weekly 20230525| Weekly ECal May 25, 2023]]
 
* [[SoLID Ecal Weekly 20230518| Weekly ECal May 18, 2023]]
 
* [[SoLID Ecal Weekly 20230518| Weekly ECal May 18, 2023]]
−
* SoLID Collaboration Meeting May 8-9, 2023
+
**[https://solid.jlab.org/wiki/images/6/63/SoLID_BeamTest_Spring2023Report_MLUpdated.pdf Darren's Spring 2023 research report]
−
** [[https://solid.jlab.org/DocDB/0004/000474/003/Solid_collaboration_meeting_05082023.pdf Ye's presentation]]
+
**[https://solid.jlab.org/wiki/index.php/SoLID_Ecal_Weekly_20230518#Discussion_on_Charged_Particle_PID_Analysis_Plan Rough plan for charged particle PID (classical method)]
−
* [[SoLID Ecal Weekly 20230504| Weekly ECal May 04, 2023]]
+
* SoLID [https://solid.jlab.org/cgi-bin/public/DisplayMeeting?conferenceid=22 Collaboration Meeting May 8-9, 2023]
 +
** [https://solid.jlab.org/DocDB/0004/000480/002/Beam%20Test%20and%20ECal%20Overview_2.pdf Mike's presentation on overview of beamtest]
 +
** [https://solid.jlab.org/DocDB/0004/000489/001/Beam_Test_Tracking.pdf Xinzhan's presentation on tracking]
 +
** [https://solid.jlab.org/DocDB/0004/000474/003/Solid_collaboration_meeting_05082023.pdf Ye's presentation on overview of simulation (7 and 18 deg) and LASPD PID]
 +
* Weekly ECal May 04, 2023 -- no minute, we focused on getting ready for the collaboration meeting.
 
* [[SoLID Ecal Weekly 20230427| Weekly ECal April 27, 2023]]
 
* [[SoLID Ecal Weekly 20230427| Weekly ECal April 27, 2023]]
 
* [[SoLID Ecal Weekly 20230420| Weekly ECal April 20, 2023]]
 
* [[SoLID Ecal Weekly 20230420| Weekly ECal April 20, 2023]]
Line 12: Line 101:
 
* [[SoLID Ecal Weekly 20230406| Weekly ECal April 06, 2023]]
 
* [[SoLID Ecal Weekly 20230406| Weekly ECal April 06, 2023]]
 
* [[SoLID Ecal Weekly 20230330| Weekly ECal March 30, 2023]]
 
* [[SoLID Ecal Weekly 20230330| Weekly ECal March 30, 2023]]
−
* [[SoLID Ecal Weekly 20230323| Weekly ECal March 23, 2023]]
+
 
 +
=FY2022 beam test summary=
 +
* [[FY2022 beam test high rate summary| FY2022 beam test high rate data summary]]
 +
* [[FY2022 beam test winter break summary| FY2022 beam test during X'mas break summary]]
 +
* [[FY2022 beam test low rate summary| FY2022 beam test low rate data summary]]
 +
* [[FY2022 PID analysis| FY2022 PID analysis]]
 +
* [https://redmine.jlab.org/projects/solid-ecal/wiki redmine wiki link]
 +
 
 +
=ECal weekly January 2023 to March 2023 =
 +
*Xiaochao's [https://drive.google.com/file/d/16idq2taWdqkz_pnls78FtxQsdHb76bDo/view?usp=sharing weekly meeting notes on google drive] or on this wiki [https://solid.jlab.org/wiki/images/0/04/EC_beamtest_notes.doc EC_beamtest_notes.doc] [https://solid.jlab.org/wiki/images/8/8e/EC_beamtest_notes.pdf EC_beamtest_notes.pdf]
 +
 
 +
=ECal weekly January 2013 to October 2022=
 +
*The EC weekly meeting minutes prior to FY22 beam test was hosted on an old-fashioned HTML page: [https://hallaweb.jlab.org/experiment/PVDIS/SoLID/EC/meetings/SoLID_EC_Weekly_minutes.html All EC meetings 2013-2022]
 +
*[https://hallaweb.jlab.org/experiment/PVDIS/SoLID/EC/meetings/support/SoLID_EC_SupportStructure.html ECal support meeting]
 +
*[https://hallaweb.jlab.org/experiment/E05-007/SoLID/EC/meetings/spd/SPD%20simulation%20for%20JLab%20SoLID.html Simulation for SPD]
 +
*UVA Tests [https://hallaweb.jlab.org/experiment/E05-007/SoLID/EC/meetings/2014-test/SoLID%20EC%20Preshower%20Test%202014.html 2014 tests] [https://hallaweb.jlab.org/experiment/E05-007/SoLID/EC/meetings/2014-test/2015-test/SoLID%20EC%20Detector%20Test%202015.html 2015 tests] [https://hallaweb.jlab.org/experiment/E05-007/SoLID/EC/meetings/2014-test/2016-test/SoLID_EC_Detector_Test_2016.html 2016 tests]

Latest revision as of 16:05, 22 May 2025

ECal weekly May 2025

  • Weekly ECal May 8, 2025
    • Ye's slides on comparison of preCDR vs. latest simulation. Note that the preCDR plot (on 2D plane energy vs. R, reproduced by Ye) is for e.g. "pi- from pi-" while the latest simulation is "everything from pi-". Even though the plots are for different things, it seems to contradict the table that the latest simulation gives much higher radiation background.
    • Zhiwen will dig into how Jin extracted radiation dose from the particle rate plots.
    • We discussed the labor cost of large-angle ECal and SPD assembly and testing. Here is Richard's estimate, consistent with 2023 estimate of 744 PW scaled by area of 440/1800.
  • Weekly ECal May 1, 2025
    • Ye worked out a way to extract the z-dependence of Edep in the Preshower and Shower. Counting the whole preshower as a layer, the radiation is pretty high. On the other hand, the radiation in the Shower layers does not look much worse than preCDR, though the exact z-dependence is different. See her presentation: PVDIS_simulation_configuration_comparison_04302025.pdf. Note that the radiation dose of the preshower needs to be integrated over the preshower's Z (slides 2 left, 8, and 9 left).
    • Jianping suggested re-visting low-energy pion comparison of bggen vs. wiser, i.e. DVCS and MARATHON data analyzed by Ye Tian (IMP) and Zhihong. -- followup on 5/8: Ye dig out the old slide but that study stopped at 2GeV for the pion momentum (minimum).
    • Mike and Richard talked to Carl about benchtesting the Shower PMTs, to be followed by MAPMT and MCP-PMT tests.
    • Darren gave a presentation SoLID ECal ML PID on the latest status (from Nov. 2024) of AI/ML PID study. Recap:
      • the study was done using simulation without background, then applied to data
      • e vs. pi0: ML output could reject pi0's (since probability of pi0 is always < 0.5)
      • applying ML to data, we see pi+, pi- and e ID in the output
      • ML-ID'ed e- and pi+ or pi- preshower, ShSum from data agree with simulation very well
      • ECal resolution: had to add by hand about 35% for PSH, 10% for SH
      • one result is ML PID charged pion rejection vs. e- efficiency -- something comparable to classical PID
      • the only thing missing was background simulation!

ECal weekly April 2025

  • Weekly ECal April 10, 2025
    • LHCb tracker upgrade, Table 3.4. (Note 1Gy = 100rad)

ECal weekly March 2025

  • Weekly ECal March 27, 2025
    • Ye showed comparison of Jin's preCDR and latest study. Checking particle entering ECal. Large difference already between Jin's and "THis study" using short endcap and Babar baffle. This means the difference is in the generator (or the interpretation), not the endcap and magnet.


ECal weekly February 20, 2025

  • Mike's PID update. Some discussions:
    • JP: what are the uncertainties in the preshower and Shower calibration? -> Ye and Mike need to find the uncertainty. Ben's plot may be more precise
    • Ye: there is also a 65uA (4409) run
    • JP: there should also be a Preshower cut
  • Question arose how the preshower radiation dose is 3 times higher now (SOLID PVDIS) vs. preCDR value...!
    • JP: there was a study of Fluka va. GEANT by Lorenzo Zana before the Science Review, need to dig this out
    • We need to vet the statements of *3 and *5 estimate (how much SoLID PVDIS is higher than the beam test in terms of radiation dose in the ECal modules, currently in the report)
  • Comments on the report draft:
    • FADC timing should not be in the Shower section

ECal weekly March 2024 to December 2024

  • Weekly ECal October 31, 2024
    • Ben started analyzing the THU base. Here is his Calculation on all three PMT bases
    • Zhihong shared pictures of the super-module being assembled at THU: pic0, pic1, pic2; He will also send a new PMT base design diagram (for the super module) so we can study its possible gain shift in advance
    • Zhihong will look if there are old PMTs with the same base as the 2023 Hall C beamtest, and will do a bench test to study the gain shift if any such PMT/base is found.
    • Xiaochao shared a rough draft of the beam test report. Still need to wrap up some calculation, and need someone to double check all numbers.

ECal weekly March 2023 to February 2024

FY2022 beam test summary

ECal weekly January 2023 to March 2023

ECal weekly January 2013 to October 2022

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