Run Planning Meeting Notes, October 28 - November 3, 2021

From GlueXWiki
Revision as of 23:48, 1 November 2021 by Malte (Talk | contribs)

Jump to: navigation, search

MCC whiteboard Meeting Bluejeans 660743227

Tuesday November 02

  1. Last 24h:
    • Recorded XXM+ events
    • gluonraid1 was degraded -> one disk was replaced (RAID5, no hot spare; rebuild started automatically)
    • Day shift crew updated RootSpy reference plots for full target run [1]
  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 [2])
    • 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 [3]
    • Follow-up Re: Follow-up Re: TAGH scalers, roctagh2
    • Target was emptied at 6:10pm Firday [4]
    • 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 [5]
    • When we run with empty target, dont run AI for CDC HV. Stay with 2125V fixed value [6]
    • power cycle of rocTAGH1, rocTAGH2, restart DAQ due to frozen TAGH scalers
    • Spooky halloween shift - accelerator became unstable (lots of RF trips) sunday night [7]
    • 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 [8])
    • New wiki page with short-term guidance for shifters [9]
    • 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