Latest revision as of 09:00, 5 October 2022

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MCC whiteboard

Hall D counting room white board

Hall D Logbook

Back to Run Coordination Meetings:Fall2022

Wednesday, October 5

Past 24 hours

• [https://logbooks.jlab.org/entry/4051202 No beam since 10:30AM yesterday morning.
• FCAL HV Scan
• Shift summaries
  • 0400-1000 05/10
  • 2200-0400 04-05/10
  • 1600-2200 04/10
  • 1000-1600 04/10
  • 0400-1000 04/10

Issues

• Same 2 CDC channels tripped again twice, had to be slowly ramped back up.
• No beam through day shift due to issue with magnets in SL.

Plan

• Production data on helium target

Tuesday, October 4

Past 24 hours

• 3 FCAL bases replaced (Mark and Malte)
• Issue with separator magnet resolved and beam was restored to Hall D 11:40PM.
  • Harp scan results
• 1B triggers collected on He target
  • Primex run list
• Shift summaries
  • 0400-1000 04/10
  • 2200-0400 03-04/10
  • 1600-2200 03/10
  • 1000-1600 03/10
  • 0400-1000 03/10

Issues

• Same 2 CDC channels tripped again today, had to be slowly ramped back up.
• Hot channel in BCAL
• Shift checklist binder is almost full

Plan

• Production data on helium target

Monday, October 3

Over the weekend

• Beam was restored to Hall D Saturday morning, 10:45AM.
• Harp scan results
• After another downtime shortly after harp scans, production running began at 1:20PM Saturday afternoon.
  • 5.4B triggers collected since Saturday afternoon (He target)
  • Primex run list
• Shift summaries
  • 0400-1000 03/10
  • 2200-0400 02-03/10
  • 1600-2200 02/10
  • 1000-1600 02/10
  • 0400-1000 02/10

Issues

• RSEP8A magnet overtemp fault issue - SL going to restricted access, probably will need to flush this magnet.
• DAQ Issues (Sergey)
• 2 CDC channels tripped and would ramp back up just by resetting normally. Simon ramped them up slowly and since then have been fine.
• BCAL LED pulser script needed to be reset (Mark)
• 3 FCAL bases to be changed

Plan

• Production data on helium target

Sunday, October 2

Past 24 hours

• Shift summaries
  • 0400-1000 02/10
  • 2200-0400 01-02/10
  • 1600-2200 01/10
  • 1000-1600 01/10
  • 0400-1000 01/10

Plan

• Production data on helium target

Saturday, October 1

Past 24 hours

• Shift summaries
  • 0400-1000 01/10
  • 2200-0400 30-01/10
  • 1600-2200 30/09
  • 1000-1600 30/09
  • 0400-1000 30/09

Plan

• Production data on helium target

Friday, September 30

Past 24 hours

• Long maintenance day dedicated to RF recovery and injector setup in preparation for Hall A coming online
  • Tagger NMR Probe Meter (Scot)
  • Calorimeter modules replace in PS (Sasha)
  • We collected 43.6M raw-mode cosmics events since yesterday morning.
• Beam was restored to Hall D at 11PM last night. We completed the accelerator harp scans on 5C11/B and our radiator wire scan.
  • Harp scan results
• While we were setting up for production after the harp scans, there was an issue with RF dropping out of HV. Beam has been down since then.
  • Downtime manager
• Alex A. added back the standard physics monitoring histograms to the rootspy GUI [1]
• Shift summaries
  • 0400-1000 30/09
  • 2200-0400 29-30/09
  • 1600-2200 29/09
  • 1000-1600 29/09
  • 0400-1000 29/09

Issues

• Shoulder in y-distribution from radiator harp scan

Plan

• Once beam is back, re-do harp scans.
• Continue taking production data on LHe at 200nA today and over the weekend.
• PS Triggers collected since He target cell inserted:
  • With target filled: 5.58B
  • With target empty: 1.63B
  • Empty/Full = 0.29, Percentage of flux spent on empty: 22.6%

Thursday, September 29

Past 24 hours

• Helium target was filled around 1:15PM yesterday.
• 2.5B triggers collected on helium target so far.
  • Last run group: Empty Target PS triggers accounted for 33% of Empty+Full data set.
• Currently taking cosmics.
• Shift summaries
  • 0400-1000 29/09
  • 2200-0400 28-29/09
  • 1600-2200 28/09
  • 1000-1600 28/09
  • 0400-1000 28/09

Issues

• 1.5hr downtime overnight from CPS breaker trip.
• FCAL Base lockup reset

Plan

• Maintenance Day
  • Hall in controlled access.
  • Walkthrough training at 10AM.
• When beam is back, we will continue taking production data on LHe at 200nA.