Difference between revisions of "Dec 15, 2016 Calorimeter"

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(Minutes)
Line 46: Line 46:
  
 
# Announcements
 
# Announcements
 +
#* Accelerator started tuning beam to Hall D yesterday. A couple of hours of beam was received with radiation levels at or below those from the spring.
 +
#* The solenoid tripped several times during ramping. Final ramping at half nominal rate reached 1200 A, where it has been stable since last evening. We will keep this current for most of the run.
 +
#* The tagger magnet tripped last night and accelerator was in the process of repair. [It was fixed by the time of the meeting]
 +
#* Tuning and other Hall D studies are underway
 
# Action Items
 
# Action Items
 +
#* Completed for 2016!
 
# Run preparations
 
# Run preparations
# FCAL update
+
#* Bcal biases on and stable at 5 deg C. Integration window reduced to 3-13 counts, so gains will have to be adjusted accordingly.
 +
#* Fcal voltages on and stable. About 6 bases are problematic, but few new failures
 +
# FCAL update (Jon)
 +
#* Had a little scare last Friday when Jon tried to turn the voltages on and they were unresponsive
 +
#* After some investigation, it was found that the hardware interlock on voltages required a valid humidity range with a minimum of 10%.
 +
#* The Fcal darkroom humidity was about 8%. See [
 
# BCAL update
 
# BCAL update
 
##[https://halldweb.jlab.org/wiki/images/0/0f/Pi0_dalitz_decay_v1.pdf &pi;<sup>0</sup> Dalitz decay for detector studies] - George, Christine
 
##[https://halldweb.jlab.org/wiki/images/0/0f/Pi0_dalitz_decay_v1.pdf &pi;<sup>0</sup> Dalitz decay for detector studies] - George, Christine

Revision as of 14:14, 15 December 2016

Video Conferencing Information

Meeting Time: 11:00 a.m.

  1. To join via a Web Browser, go to the page [1] https://bluejeans.com/907185247.
  2. To join via Polycom room system go to the IP Address: 199.48.152.152 (bjn.vc) and enter the meeting ID: 907185247.
  3. To join via phone, use one of the following numbers and the Conference ID: 907185247.
    • US or Canada: +1 408 740 7256 or
    • US or Canada: +1 888 240 2560
  4. Upon connection all microphones are automatically muted. To unmute your mike on a Polycom or equivalent unit, enter *4. Unmuting on a computer is trivial as there is a microphone button than can be clicked.
  5. More information on connecting to bluejeans is available.

Participant Direct Lines

  • JLab Phone in CC L207 is 757-269-7084 (usual room)
  • JLab Phone: in CC F326 is 757-269-6460
  • Phone in the Regina Video-conference Suite is 306-585-4204
  • Athens Phone: in Christina's office is 011-30-210-727-6947

Action Items

  • Produce documentation for implementation of timing algorithms and constants (Andrei) GlueX-doc-3165 draft posted

References

  1. FCAL HDFCAL log book
  2. BCAL HDBCAL log book
  3. BCAL Action Items and Working Tasks

Tentative Agenda

  1. Announcements
  2. Action Items
  3. Run preparations
  4. FCAL update
  5. BCAL update
    1. π0 Dalitz decay for detector studies - George, Christine
  6. Calibrations
  7. Reconstruction and Simulation
  8. NIM articles
  9. Any other business

Minutes

Attendees: Elton, Jon, Mark (JLab); Zisis, Tegan (UofR); George, Christine (Athens); Curtis (CMU).

  1. Announcements
    • Accelerator started tuning beam to Hall D yesterday. A couple of hours of beam was received with radiation levels at or below those from the spring.
    • The solenoid tripped several times during ramping. Final ramping at half nominal rate reached 1200 A, where it has been stable since last evening. We will keep this current for most of the run.
    • The tagger magnet tripped last night and accelerator was in the process of repair. [It was fixed by the time of the meeting]
    • Tuning and other Hall D studies are underway
  2. Action Items
    • Completed for 2016!
  3. Run preparations
    • Bcal biases on and stable at 5 deg C. Integration window reduced to 3-13 counts, so gains will have to be adjusted accordingly.
    • Fcal voltages on and stable. About 6 bases are problematic, but few new failures
  4. FCAL update (Jon)
    • Had a little scare last Friday when Jon tried to turn the voltages on and they were unresponsive
    • After some investigation, it was found that the hardware interlock on voltages required a valid humidity range with a minimum of 10%.
    • The Fcal darkroom humidity was about 8%. See [
  5. BCAL update
    1. π0 Dalitz decay for detector studies - George, Christine
  6. Calibrations
  7. Reconstruction and Simulation
  8. NIM articles
  9. Any other business