Run Planning Meeting Notes, Mar 21 - Mar 27, 2019

• Run_Coordination_Meetings:Spring2019_Run
• PrimEx daily meeting
• PrimEx-η run plan
• Production runs, number of triggers
• Trigger counter
• To join via a Web Browser, go to the page https://bluejeans.com/660743227

Thursday, Mar. 21 at 08:45

1. Past 24 hours:
   • RF recovery during the day shift
   • Beam recovery delayed due to (1) issue in the injector, resolved by evening, then (2) UPS battery needs replacement in the north linac.
2. Issues
   • low counts seen in bcal sector (logbook entry 3670196)
3. Reports
   • helium target refilled, ready
   • trigger rate and beam flux history for Spring 2019 run
4. Today:
   • Production: 200nA, Al 10^-4
5. Run Plan
   • Production running: when beam returns, check beam conditions as follows:
     1. do harp scans, both accelerator and Hall D radiator
     2. check radiation monitor rates in tagger hall and Hall D
     3. verify transmission in PSC and PS coincidence rates @ 200nA, 1e-4 radiator
   • Beam studies planned for day shift on Monday
   • RF Recovery scheduled for Tuesday

Friday, Mar. 22 at 08:45

1. Past 24 hours:
   • beam recovery, conditions checked, running resumed.
2. Issues
   • HV tripped on two inner FCal blocks (logbook entry 3670196)
   • HV in CDC tripped, without alarm! (logbook entry 3670885)
3. Reports
   • collimator transmission drops again (logbook entry 3670862)
4. Today:
   • Production: 200nA, Al 10^-4
5. Run Plan
   • Production running continues
   • Beam studies planned for day shift on Monday
   • RF Recovery scheduled for Tuesday

Monday, Mar. 25 at 08:45

1. Past 72 hours:
   • production running on He target until Sunday 5:30pm
   • continued running on empty target through Monday 8:30am
   • now in controlled access, RF recovery underway
2. Issues
   • Ongoing issue with CDC HV readback (logbook entry 3670885, 3671598)
   • PS scalers communication issue (logbook entry 3670950)
   • DAQ interruptions ~1 per shift, recovery is straight-forward ([1], [2])
   • Compcal monitoring plots, timing shows double peak, considered ok (logbook entry 3671757)
   • Compcal HV communication failure
   • FCal HV communication failure (logbook entry 3671351)
   • Individual FCal bases need reset (logbook entry 3671386, [ resolved here])
   • FCal fadc scalers stop updating (logbook entry 3671880)
   • Accelerator tightens AC lock constraints (logbook entry 3671930)

1. Reports
   • Several reference plots for monitoring histograms out of date (logbook entry 3671340)
   • Active collimator lock is mostly working, sometimes fights to keep up (logbook entry 3671214)
   • Accelerator using machine development time to investigate this effect in Hall D
2. Today:
   • work on solenoid during 9:00am - 12:00pm, warm-up to begin (logbook entry 3670889)
   • accelerator
3. Run Plan
   • Production running continues
   • Beam studies planned for day shift on Monday
   • RF Recovery scheduled for Tuesday