Difference between revisions of "Run Planning Meeting Notes, October 28 - November 3, 2021"

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[https://cebaf.jlab.org/files/ops/accboard/ MCC whiteboard]
 
[https://cebaf.jlab.org/files/ops/accboard/ MCC whiteboard]
[https://bluejeans.com/660743227 Meeting Bluejeans 660743227]  
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[https://bluejeans.com/660743227 Meeting Bluejeans 660743227]
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=Wednesday November 02=
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#Last 24h:
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#* Recorded 726M+ events with full LHe4 target
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#*
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#Issues:
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#* Bleedthrough
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# [https://halldweb.jlab.org/primexd/run_plan/Run_Plan_Fall_2021.pdf Plan:]
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#* Continue production at 200nA with the solenoid on.
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#* Since Hall A cannot run at present, we are the priority hall.
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#* '''Maintenance day tomorrow, Wed 11/03'''
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#** Controlled access planned for maintenance work (e.g. FCAL [https://logbooks.jlab.org/entry/3935581])
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#* Beam energy change planned for 11/05-11/07
 
=Tuesday November 02=
 
=Tuesday November 02=
 
#Last 24h:
 
#Last 24h:

Revision as of 22:02, 2 November 2021

MCC whiteboard Meeting Bluejeans 660743227

Wednesday November 02

  1. Last 24h:
    • Recorded 726M+ events with full LHe4 target
  2. Issues:
    • Bleedthrough
  3. Plan:
    • Continue production at 200nA with the solenoid on.
    • Since Hall A cannot run at present, we are the priority hall.
    • Maintenance day tomorrow, Wed 11/03
      • Controlled access planned for maintenance work (e.g. FCAL [1])
    • Beam energy change planned for 11/05-11/07

Tuesday November 02

  1. Last 24h:
  2. Issues:
    • Bleedthrough
  3. Plan:
    • Continue production at 200nA with the solenoid on.
    • Since Hall A cannot run at present, we are the priority hall.
    • Maintenance day tomorrow, Wed 11/03
      • Controlled access planned for maintenance work (e.g. FCAL [4])
    • Beam energy change planned for 11/05-11/07

Monday November 01

  1. Over the weekend:
    • Recorded 331M events from Fri, 8am till target was emptied. Then 1400M+ events with empty target until now
    • Comment box on DAQ machine did not show up -> restarting DAQ brought it back. Missing comments for some runs recorded in logbook [5]
    • Follow-up Re: Follow-up Re: TAGH scalers, roctagh2
    • Target was emptied at 6:10pm Firday [6]
    • BCAL noise at 10 o'clock
    • Note on neutron background in Hall D
    • Over the weekend, reference plots have been updated to reflect status with empty target [7]
    • When we run with empty target, dont run AI for CDC HV. Stay with 2125V fixed value [8]
    • power cycle of rocTAGH1, rocTAGH2, restart DAQ due to frozen TAGH scalers
    • Spooky halloween shift - accelerator became unstable (lots of RF trips) sunday night [9]
    • Target will be filled this morning (after the meeting). Chris C requested short access during filling to watch target interlock panel
  2. Issues:
    • BCAL noise at 10 o'clock
    • Bleedthrough
  3. Plan:
    • Continue production at 200nA with the solenoid on.
    • Since Hall A cannot run at present, we are the priority hall.
    • Maintenance day on Wed 11/03 beam will be shut off at ~6am
      • Hall D will go into controlled access for maintenance work (FCAL, ...?)
    • Beam energy change planned for 11/05-11/07
    • Hall A scheduled to come back online on Monday, 11/08

Friday October 29

  1. Last 24h:
    • Recorded 1090M+ events
    • Change out of C02
    • RadCon replaced light bulb (was really broken) in our rapid access beacon with an LED bulb
      • Access was necessary, but machine was actually down during that time
    • RCDB web interface was unreachable, shift crew contacted administrator and the service was restarted
    • HallC BCM calibration should not have affected us, but they use varying beam currents for that procedure, which may have changed bleedthrough during run 81620 (see [10])
    • New wiki page with short-term guidance for shifters [11]
    • Beam - RF Timing differences with different trigger types
    • RAID beeping in DAQ room
  2. Issues:
    • BCAL noise at 10 o'clock
    • Bleedthrough
  3. Plan:
    • Continue production at 200nA with the solenoid on.
    • Since Hall A cannot run at present, we are the priority hall.
    • Maintenance day shifted to Wed 11/03
    • Beam energy change planned for 11/05-11/07; decision pending due to availability of Hall A

Thursday October 28

  1. Last 24h:
  2. Issues:
  3. Plan:
    • Continue production at 200nA with the solenoid on.
    • Since Hall A cannot run at present, we are the priority hall.
    • Hall C BCM calibration moved to today (Thursday) 2:30pm.
    • Maintenance day planned for Tue 11/02
    • Beam energy change planned for 11/05-11/07; decision pending due to availability of Hall A