Difference between revisions of "Run Planning Meeting Notes, October 14 - October 20, 2021"

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=Thursday, October 14=
+
=Wednesday, October 20=
−
# In last 24 hours:
+
# Last 24:
−
#* FDC chiller tripped due to overheating - no chilled water flow: https://logbooks.jlab.org/entry/3923962
+
#* taking data till 5:20pm - 400M triggers
−
#* Could not do rapid access - beacon bulb burned out - https://logbooks.jlab.org/entry/3924326 (lost about 40 min)
+
#* At 5:20pm SL dropped due to LCW/power problem; NL shut down to prevent tripping; tagger magnet ramp down https://logbooks.jlab.org/entry/3928353
−
#* Early riser summary: https://logbooks.jlab.org/entry/3924292
+
#* tagger magnet restored - https://logbooks.jlab.org/entry/3928399
−
#* Owl summary: https://logbooks.jlab.org/entry/3923921
+
#* empty target reconstructed - https://logbooks.jlab.org/entry/3928026
−
#* Swing summary: https://logbooks.jlab.org/entry/3923728
+
#* timing calibration https://logbooks.jlab.org/entry/3928409
−
#* Day summary: https://logbooks.jlab.org/entry/3923480
+
−
#* ~400M triggers with B-field LHe 200nA + 300M without FDC
+
−
#* short downtime (~30 min) HallA BLA calibration
+
−
#* Run 81504 in raw mode
+
−
#* Run 81505 ~40min no D laser, B,C up, A down, last minute with the D laser.
+
−
#* PS background https://logbooks.jlab.org/entry/3923621 (Sasha)
+
−
#* spike in beam current https://logbooks.jlab.org/entry/3923798
+
 
# Remaining issues:
 
# Remaining issues:
−
#* fixed the beacon and the FDC chiller
+
#* tagger NMR not scanning (communication with accel. w.r.t. tagger magnet)
−
#* noisy FDC wires https://logbooks.jlab.org/entry/3923747
+
#* BCAL noise at 10 o'clock
 
#* Bleedthrough
 
#* Bleedthrough
 
# [https://halldweb.jlab.org/primexd/run_plan/Run_Plan_Fall_2021.pdf Plan:]
 
# [https://halldweb.jlab.org/primexd/run_plan/Run_Plan_Fall_2021.pdf Plan:]
−
#* 2 more shifts with 200 nA and target filled with He then wait for decision from Primex 4 pm meeting.
+
#* plan for day/swing on Wednesday - maintenance
 +
#** position survey CCAL - DOESN'T require RadCon survey
 +
#** correct shielding  at the left (downstream) PS arm
 +
#** do measurements with magnetometer
 +
#** FCAL work
 +
#** troubleshoot the faulty FDC chiller
 +
#* when the beam is back continue production at 200nA
 +
 
 +
=Tuesday, October 19=
 +
# Last 24:
 +
#* Target filled 9am-12pm - https://logbooks.jlab.org/entry/3927473
 +
#* harp scan results https://logbooks.jlab.org/entry/3927666
 +
#* 3pm-9:30pm  very productive
 +
#* starting 9:30pm bumpy night - beam down re-tuning cavities, tuning Hall A, Hall B bleedthrough
 +
#* ~300M events on full target
 +
#* Work on FCAL - https://logbooks.jlab.org/entry/3927498
 +
#* power switch on FDC chiller re-installed - https://logbooks.jlab.org/entry/3927527
 +
#* BCAL 10 o'clock noise might be related to left arm shielding - https://logbooks.jlab.org/entry/3927768
 +
#* FDC efficiency - https://logbooks.jlab.org/entry/3927560
 +
# Remaining issues:
 +
#* tagger NMR not scanning (communication with accel. w.r.t. tagger magnet)
 +
#* BCAL noise at 10 o'clock
 +
#* improve communications with the accel. w.r.t. the tagger magnet
 +
#* Bleedthrough
 +
# [https://halldweb.jlab.org/primexd/run_plan/Run_Plan_Fall_2021.pdf Plan:]
 +
#* production 200nA
 +
#* plan for day/swing on Wednesday - maintenance
 +
#** position survey CCAL - DOESN'T require RadCon survey
 +
#** correct shielding  at the left (downstream) PS arm
 +
#** do measurements with magnetometer
 +
#** ...
 +
 
 +
=Monday, October 18=
 +
# Over the weekend:
 +
#* Target emptied Friday 5pm - https://logbooks.jlab.org/entry/3925563
 +
#* Long downtime (flooding in accel.) started 5pm on Friday, beam came for an hour in the evening and was restored 6am Saturday.
 +
#* Since then very productive:  1.25B events on empty target
 +
#* Some noise in BCAL at 10 o'clock - https://logbooks.jlab.org/entry/3927356
 +
#* two-peak structure TDC's(of all detectors) - RF https://logbooks.jlab.org/entry/3926223 solved after restarting
 +
#* TAGM TDC calibration problem - https://logbooks.jlab.org/entry/3926306 solved after several runs
 +
#* NMR probe stop scanning https://logbooks.jlab.org/entry/3926647 https://logbooks.jlab.org/entry/3926650 https://logbooks.jlab.org/entry/3927378
 +
#* last bleedthrough run taken with low pulser rate https://logbooks.jlab.org/entry/3925916
 +
#* FDC wire thresholds optimized (lowered) - https://logbooks.jlab.org/entry/3925360
 +
#* online monitoring files not copied to CUE workdisk - https://logbooks.jlab.org/entry/3926767
 +
#* archiving trigger rate - solved by David https://logbooks.jlab.org/entry/3925225
 +
# Remaining issues:
 +
#* tagger NMR not scanning
 +
#* BCAL noise at 10 o'clock
 +
#* Bleedthrough
 +
# [https://halldweb.jlab.org/primexd/run_plan/Run_Plan_Fall_2021.pdf Plan:]
 +
#* 9am pass change - start filling the target
 +
#** install the FDC chiller power switch - https://logbooks.jlab.org/entry/3925381
 +
#** FCAL work
 +
#** after beam comes - harp scans
 +
#* plan for day/swing on Wednesday - maintenance
 +
#** position survey CCAL - requires RadCon survey prior
 +
#** install additional shielding at the left (downstream) PS arm
 +
#** do measurements with magnetometer
 +
#** ...
  
 
=Friday, October 15=
 
=Friday, October 15=
Line 40: Line 91:
 
#* pass change on Monday
 
#* pass change on Monday
 
#* day/swing on Wednesday - maintenance
 
#* day/swing on Wednesday - maintenance
 +
 +
 +
=Thursday, October 14=
 +
# In last 24 hours:
 +
#* FDC chiller tripped due to overheating - no chilled water flow: https://logbooks.jlab.org/entry/3923962
 +
#* Could not do rapid access - beacon bulb burned out - https://logbooks.jlab.org/entry/3924326 (lost about 40 min)
 +
#* Early riser summary: https://logbooks.jlab.org/entry/3924292
 +
#* Owl summary: https://logbooks.jlab.org/entry/3923921
 +
#* Swing summary: https://logbooks.jlab.org/entry/3923728
 +
#* Day summary: https://logbooks.jlab.org/entry/3923480
 +
#* ~400M triggers with B-field LHe 200nA + 300M without FDC
 +
#* short downtime (~30 min) HallA BLA calibration
 +
#* Run 81504 in raw mode
 +
#* Run 81505 ~40min no D laser, B,C up, A down, last minute with the D laser.
 +
#* PS background https://logbooks.jlab.org/entry/3923621 (Sasha)
 +
#* spike in beam current https://logbooks.jlab.org/entry/3923798
 +
# Remaining issues:
 +
#* fixed the beacon and the FDC chiller
 +
#* noisy FDC wires https://logbooks.jlab.org/entry/3923747
 +
#* Bleedthrough
 +
# [https://halldweb.jlab.org/primexd/run_plan/Run_Plan_Fall_2021.pdf Plan:]
 +
#* 2 more shifts with 200 nA and target filled with He then wait for decision from Primex 4 pm meeting.

Latest revision as of 07:34, 20 October 2021

Wednesday, October 20

  1. Last 24:
  2. Remaining issues:
    • tagger NMR not scanning (communication with accel. w.r.t. tagger magnet)
    • BCAL noise at 10 o'clock
    • Bleedthrough
  3. Plan:
    • plan for day/swing on Wednesday - maintenance
      • position survey CCAL - DOESN'T require RadCon survey
      • correct shielding at the left (downstream) PS arm
      • do measurements with magnetometer
      • FCAL work
      • troubleshoot the faulty FDC chiller
    • when the beam is back continue production at 200nA

Tuesday, October 19

  1. Last 24:
  2. Remaining issues:
    • tagger NMR not scanning (communication with accel. w.r.t. tagger magnet)
    • BCAL noise at 10 o'clock
    • improve communications with the accel. w.r.t. the tagger magnet
    • Bleedthrough
  3. Plan:
    • production 200nA
    • plan for day/swing on Wednesday - maintenance
      • position survey CCAL - DOESN'T require RadCon survey
      • correct shielding at the left (downstream) PS arm
      • do measurements with magnetometer
      • ...

Monday, October 18

  1. Over the weekend:
  2. Remaining issues:
    • tagger NMR not scanning
    • BCAL noise at 10 o'clock
    • Bleedthrough
  3. Plan:
    • 9am pass change - start filling the target
    • plan for day/swing on Wednesday - maintenance
      • position survey CCAL - requires RadCon survey prior
      • install additional shielding at the left (downstream) PS arm
      • do measurements with magnetometer
      • ...

Friday, October 15

  1. In last 24 hours:
  2. Remaining issues:
  3. Plan:
    • run till 5pm with full target, then with empty over the weekend - inform target group (Chris) when emptying/filling the target
    • pass change on Monday
    • day/swing on Wednesday - maintenance


Thursday, October 14

  1. In last 24 hours:
  2. Remaining issues:
  3. Plan:
    • 2 more shifts with 200 nA and target filled with He then wait for decision from Primex 4 pm meeting.
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