Difference between revisions of "FY2022 beam test high rate summary"

From solidwiki
Jump to: navigation, search
(→‎Run Information)
(→‎Target Information)
 
(3 intermediate revisions by the same user not shown)
Line 4: Line 4:
 
*ECal PID study (charged electron and pion samples)
 
*ECal PID study (charged electron and pion samples)
 
*We need to study LASPD timing
 
*We need to study LASPD timing
−
==Test Conditions==
 
−
*18 degree test was done during deuteron photo-disintegration experiment
 
−
*target: varies; current: up to 70uA
 
  
 
==Run Information==
 
==Run Information==
Line 17: Line 14:
 
**Jimmy's record: [https://solid.jlab.org/wiki/index.php/File:Solid_beam_test_table_measurements_18_degree.pdf beam_test_table_measurements_18_degree.pdf]
 
**Jimmy's record: [https://solid.jlab.org/wiki/index.php/File:Solid_beam_test_table_measurements_18_degree.pdf beam_test_table_measurements_18_degree.pdf]
 
**Shower prototype PMT information (gain vs. HV): [https://redmine.jlab.org/attachments/2064 HV_JLab_prototype.xlsx] from Ye Tian (China)
 
**Shower prototype PMT information (gain vs. HV): [https://redmine.jlab.org/attachments/2064 HV_JLab_prototype.xlsx] from Ye Tian (China)
−
*Jixie's [https://redmine.jlab.org/projects/solid-ecal/wiki/Hallc_beamtest_runlist online run list] on redmine
+
*Jixie's online run list on redmine: [https://redmine.jlab.org/projects/solid-ecal/wiki/Hallc_beamtest_runlist online run list June 2022 - Jan 6, 2023]; [https://redmine.jlab.org/projects/solid-ecal/wiki/Hallc_beamtest_runlist_highrate Jan 11 - Feb 19, 2023]; [https://redmine.jlab.org/projects/solid-ecal/wiki/Hallc_beamtest_runlist_18deg Feb 20 - March 18, 2023]
 
*Jixie's [https://redmine.jlab.org/projects/solid-ecal/wiki/Cable_map_(signal_&_HV) cable and HV map] on redmine
 
*Jixie's [https://redmine.jlab.org/projects/solid-ecal/wiki/Cable_map_(signal_&_HV) cable and HV map] on redmine
 
*[https://solid.jlab.org/wiki/images/1/1c/Survey_C2067.pdf Survey (alignment) report dated 04/06/2023]
 
*[https://solid.jlab.org/wiki/images/1/1c/Survey_C2067.pdf Survey (alignment) report dated 04/06/2023]
Line 38: Line 35:
 
*main goal will be to make sure detectors all work properly
 
*main goal will be to make sure detectors all work properly
 
*Data may be useful to characterize limit of the detectors (under what situation would the detector signal "saturate"?)
 
*Data may be useful to characterize limit of the detectors (under what situation would the detector signal "saturate"?)
−
==Test Conditions==
 
−
*The 7 deg run was carried out from January to February 2023, during XEM2 experiments
 
−
*Target information:
 
−
**from Dave Gaskell:
 
−
***3He: T=5.6 K, P=55 PSI, density=0.041 g/cm3 -- 3He started out around 100 PSI before the leak
 
−
***4He: T=5.6K P=110 PSI, density=0.129 g/cm3
 
−
***Both targets 10 cm long (nominal)
 
−
**From Nadia Fomin:
 
−
***carbon target: 0.574 g/cm^2 +/- 0.002 (edited)
 
−
**Xiaochao comment: So 3He is slightly thinner than carbon, and 4He is about twice as thick
 
 
==Run Information==
 
==Run Information==
 +
*The 7 deg run was carried out from January to February 2023, during XEM2 experiments
 
*Jimmy's record of detector layout:
 
*Jimmy's record of detector layout:
 
**[https://solid.jlab.org/wiki/index.php/File:Solid_beam_test_table_measurements_7_degree.pdf beam_test_table_measurements_7_degree.pdf]
 
**[https://solid.jlab.org/wiki/index.php/File:Solid_beam_test_table_measurements_7_degree.pdf beam_test_table_measurements_7_degree.pdf]
 
*Dosimeter reading report
 
*Dosimeter reading report
 +
 +
=Target Information=
 +
The target ladder was unchanged from 7 to 18 deg (XEM2) and then to deuteron disintegration. The complete list can be found at https://wiki.jlab.org/xem2wiki/index.php/Data_Analysis_-_Target_Information
 +
Specifically:
 +
*3He: T=5.6 K, P=55 PSI, density=0.041 g/cm^3, 10 cm long or 0.41 g/cm^2 thick -- 3He started out around 100 PSI before the leak
 +
*4He: T=5.6K P=110 PSI, density=0.129 g/cm^3, 10 cm long or 1.29 g/cm^2 thick
 +
*carbon target: 0.574 g/cm^2 +/- 0.002 g/cm^2
 +
*aluminum dummy: 0.476 g/cm^2 (sum of two foils) +/- 0.003 g/cm^2 (uncertainty of each foil)
 +
*Xiaochao comment: So 3He is slightly thinner than carbon, and 4He is about twice as thick

Latest revision as of 13:42, 12 August 2024

High rate at 18 deg

Goals

  • SPD PID study (need photon samples)
  • ECal PID study (charged electron and pion samples)
  • We need to study LASPD timing

Run Information

List of Suggested Technical Notes

  • (Mike/Jimmy) alignment and layout
  • (Mike) radiation dosimeter reading
  • (Mike) Runlist (4 plots static for 18 deg linking to dynamic plots, also including 82 and 7 deg), including rates
  • (Darren+someone) Cherenkov analysis
  • (Mike/Zhiwen) summary of rates from preCDR work for each detector (to compare with our beam test)
  • (Jixie) data cooking, pulse finding, integration and deconvolution
  • (Ye) clean sample events – what types of runs to use and how to define them
  • (Carter) LASPD timing extraction, including "edge-finding" algorithm in decoder

High rate at 7 deg

Goals

  • Rates here were too high for proper PID analysis. We focused on carbon foil (and other thin) targets, and asked 5uA dedicated beam time for 20 minutes a week to check out the system. HVs were kept off during high luminosity running.
  • main goal will be to make sure detectors all work properly
  • Data may be useful to characterize limit of the detectors (under what situation would the detector signal "saturate"?)

Run Information

Target Information

The target ladder was unchanged from 7 to 18 deg (XEM2) and then to deuteron disintegration. The complete list can be found at https://wiki.jlab.org/xem2wiki/index.php/Data_Analysis_-_Target_Information Specifically:

  • 3He: T=5.6 K, P=55 PSI, density=0.041 g/cm^3, 10 cm long or 0.41 g/cm^2 thick -- 3He started out around 100 PSI before the leak
  • 4He: T=5.6K P=110 PSI, density=0.129 g/cm^3, 10 cm long or 1.29 g/cm^2 thick
  • carbon target: 0.574 g/cm^2 +/- 0.002 g/cm^2
  • aluminum dummy: 0.476 g/cm^2 (sum of two foils) +/- 0.003 g/cm^2 (uncertainty of each foil)
  • Xiaochao comment: So 3He is slightly thinner than carbon, and 4He is about twice as thick
Retrieved from "https://solid.jlab.org/wiki/index.php?title=FY2022_beam_test_high_rate_summary&oldid=1986"