Difference between revisions of "JEF meeting, February 7, 2025"

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= Agenda =
 
= Agenda =
−
'''Preparation of parts for ECAL''' -- Sasha
 
  
−
'''Installation of the FCAL2 detector & integration to GlueX''' -- Sasha, All
 
  
−
'''Preparing for the run''' -- Sasha
+
'''Preparation of parts for ECAL''' -- Sasha  
  
 +
:: -New LMS light source is ready [https://halldweb.jlab.org/detectors/fcal2/installation/meetings/01_31_2025/lms_light_source.jpg]. Will be installed and checked during next week. Parts for holding reference PMTs are ready. 
 +
'''-Installation of the FCAL2 detector & integration to GlueX''' -- Sasha, All
 +
* Implementing ECAL into the GlueX DAQ [https://logbooks.jlab.org/entry/4316928]
 +
:: - Six VTPs have been installed, firmware loaded
 +
:: - Testing GTP trigger using individual ECAL VXS crates [https://logbooks.jlab.org/entry/4327369]
 +
*Commissioning the entire detector using the LMS (signal waveforms)
 +
:: - Signal waveforms after resolving issues with the ECAL modules [https://logbooks.jlab.org/entry/4326773]
 +
:: - Long-term stability check [https://logbooks.jlab.org/entry/4327882]
 +
::: [https://halldweb.jlab.org/wiki/index.php/List_of_ECAL_cosmic_runs List of cosmic runs]
 +
* ECAL HV interlock check [https://logbooks.jlab.org/entry/4318704]
 +
* HV module failed during cosmic run [https://logbooks.jlab.org/entry/4328335]
 +
* Tuning HV settings [https://halldweb.jlab.org/detectors/fcal2/installation/meetings/01_31_2025]
 +
* Material in front of the ECAL, TOF absorber [https://halldweb.jlab.org/detectors/fcal2/installation/meetings/01_24_2025/tof_abs1.jpg][https://halldweb.jlab.org/detectors/fcal2/installation/meetings/01_24_2025/tof_abs2.jpg]
 +
* Temperature scan in the ECAL divider region [https://logbooks.jlab.org/entry/4320981][https://logbooks.jlab.org/entry/4321406][https://logbooks.jlab.org/entry/4321241]
 +
:: Fans replaced in the central region [https://halldweb.jlab.org/detectors/fcal2/installation/meetings/01_31_2025]
 +
:: Lower detector high voltages [https://logbooks.jlab.org/entry/4327355]
 +
:: [https://halldweb.jlab.org/detectors/fcal2/temperature/Temperature_Interpolation.pdf Temperature of the NPS detector][https://logbooks.jlab.org/entry/4327355]
 +
:: 2 temperature sensors in the divider region connected, fan included into the detector interlock [https://logbooks.jlab.org/entry/4326362]  -- Josh, Bobby
 +
:: Temporary temperature sensors installed in the ECAL region [https://logbooks.jlab.org/entry/4329404]
 +
* Preparing for the run -- Sasha
 +
:: [https://halldweb.jlab.org/hdops/wiki/index.php/Electromagnetic_Calorimeter Page for shift Takers ]
 +
:: [https://halldweb.jlab.org/detectors/fcal2/esad_safety ECAL in the Experimental Safety Assessment Document (ESAD)]
 +
:: EPAS for Maintenance of the Hall D ECAL (Jlab-PTW-5236)
 +
* [https://halldweb.jlab.org/detectors/fcal2/installation/safety_docs/safety.jpg Safety briefings] - Vlad, Sasha
 +
* [https://halldweb.jlab.org/wiki/index.php/FCAL2_Meetings FCAL2 Engineering Meetings]
 +
* [https://halldweb.jlab.org/wiki/index.php/FCAL_Installation Detector installation page]
 
'''Restoring PS test setup''' [https://halldweb.jlab.org/detectors/fcal2/installation/meetings/08_09_2024/ps_setup.jpg]  
 
'''Restoring PS test setup''' [https://halldweb.jlab.org/detectors/fcal2/installation/meetings/08_09_2024/ps_setup.jpg]  
−
 
+
:: Working on the plan for testing calorimeter prototype
 
''' [https://halldweb.jlab.org/wiki/index.php/ECAL_Commissioning ECAL commissioning]''' -- Sasha, All
 
''' [https://halldweb.jlab.org/wiki/index.php/ECAL_Commissioning ECAL commissioning]''' -- Sasha, All
−
 
 
'''Calibrations'''
 
'''Calibrations'''
 +
- [https://halldweb.jlab.org/detectors/fcal2/installation/meetings/02_07_2025/slides_2025.2.7.pdf Update on calibration with cosmic ray] -- Zhikun
 +
''' Abstract for the SPIE conference'''
  
 
'''Preparations for readiness review'''
 
'''Preparations for readiness review'''
 
* [https://halldweb.jlab.org/doc-private/DocDB/ShowDocument?docid=6723 FCAL2 software] -- Simon
 
* [https://halldweb.jlab.org/doc-private/DocDB/ShowDocument?docid=6723 FCAL2 software] -- Simon
 +
 +
=Minutes=
 +
Attendees: Jane, Zhikun, Liping, Igal, Sasha, Axel, Mac, Drew, Bill, Zisis, Olga, Vlad, Phil, S.T.
 +
* During long cosmic run found voltages off due to tripping HV interlock
 +
** Over-temperature due to slight shift in position of fans
 +
** Ran with lower ADC threshold, possible due to recalibration of baseline
 +
* Zhikun showed the results of analyzing recent cosmic runs
 +
** Updated HV settings (3rd iteration) to bring peak positions closer to 8 counts above baseline
 +
*** Considering setting calibration peak at 10-12 counts
 +
*** HV limit = 1.05 kV, could in principle raise to 1.1-1.2 kV
 +
* New firmware for global trigger needed to be installed on replacement GTP
 +
* Storing archive of signal waveforms from LMS to help tracking health of detector over time
 +
** Run with current LMS, then with upgraded LED light source
 +
* We discussed preparations for the readiness review
 +
** Impact of temperature gradient on non-linearity of response, pulse shape, light response, ...
 +
*** How long to wait for stability after access and restoration of HV?
 +
** Simon showed some draft slides on software status

Latest revision as of 17:48, 10 February 2025

Connection

Meeting time and location:

Agenda

Preparation of parts for ECAL -- Sasha

-New LMS light source is ready [1]. Will be installed and checked during next week. Parts for holding reference PMTs are ready.

-Installation of the FCAL2 detector & integration to GlueX -- Sasha, All

  • Implementing ECAL into the GlueX DAQ [2]
- Six VTPs have been installed, firmware loaded
- Testing GTP trigger using individual ECAL VXS crates [3]
  • Commissioning the entire detector using the LMS (signal waveforms)
- Signal waveforms after resolving issues with the ECAL modules [4]
- Long-term stability check [5]
List of cosmic runs
  • ECAL HV interlock check [6]
  • HV module failed during cosmic run [7]
  • Tuning HV settings [8]
  • Material in front of the ECAL, TOF absorber [9][10]
  • Temperature scan in the ECAL divider region [11][12][13]
Fans replaced in the central region [14]
Lower detector high voltages [15]
Temperature of the NPS detector[16]
2 temperature sensors in the divider region connected, fan included into the detector interlock [17] -- Josh, Bobby
Temporary temperature sensors installed in the ECAL region [18]
  • Preparing for the run -- Sasha
Page for shift Takers
ECAL in the Experimental Safety Assessment Document (ESAD)
EPAS for Maintenance of the Hall D ECAL (Jlab-PTW-5236)

Restoring PS test setup [19]

Working on the plan for testing calorimeter prototype

ECAL commissioning -- Sasha, All Calibrations 

- Update on calibration with cosmic ray -- Zhikun

Abstract for the SPIE conference

Preparations for readiness review

Minutes

Attendees: Jane, Zhikun, Liping, Igal, Sasha, Axel, Mac, Drew, Bill, Zisis, Olga, Vlad, Phil, S.T.

  • During long cosmic run found voltages off due to tripping HV interlock
    • Over-temperature due to slight shift in position of fans
    • Ran with lower ADC threshold, possible due to recalibration of baseline
  • Zhikun showed the results of analyzing recent cosmic runs
    • Updated HV settings (3rd iteration) to bring peak positions closer to 8 counts above baseline
      • Considering setting calibration peak at 10-12 counts
      • HV limit = 1.05 kV, could in principle raise to 1.1-1.2 kV
  • New firmware for global trigger needed to be installed on replacement GTP
  • Storing archive of signal waveforms from LMS to help tracking health of detector over time
    • Run with current LMS, then with upgraded LED light source
  • We discussed preparations for the readiness review
    • Impact of temperature gradient on non-linearity of response, pulse shape, light response, ...
      • How long to wait for stability after access and restoration of HV?
    • Simon showed some draft slides on software status
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