Run Planning Meeting Notes, Feb 27-Mar 05, 2020

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Thursday, February 27

1. Last 24 hours
   • Harpscan done at 12:43pm. [1]
   • Good production afternoon-7 pm
   • tripy beam 7:00pm - 9:30pm: beam tripping off tagger BLM. Asked to shift 5C11B x position from -0.5 to -0.75.[2]
   • No beam 11:00 pm - 7:00 am
2. Reports/Issues
   • Gluon05 monitors
   • DIRC root_spy monitoring plot
   • DIRC LV regulation issue: [3] [4]
     • Conclusion: adding LV regulation to the DIRC todo list.
   • Transmission issue
3. Run Plan
   • No beam 8am-10am , Hall B beam restoration software reset.
   • Production
   • Starting with a special HARP scan requested by Hovanes: hall A on at 150nA, 350nA for us, use Tagger_Electron_Left_Halo for analyzing.

Friday, February 28

1. Last 24 hours
2. Beam stability
   • Harp and Collimator scan (before :11:30am). Convergence Collimator scan
   • Request to change collomator position by Hovanes at 4:30pm [5]
   • Production till 11pm with 350nA, then 250nA
   • No beam overnight
3. Reports/Issues
   • Rate and ratios
   • root_spy crashes when started on Gluon03: [6] [7]
   • DIRC temperature/communication error [8]
   • Monitoring issue: Low phi,rho,omega yields FCAL timing difference for run 71933 and 71934
4. Run Plan
   • No beam 8am-10am , Hall B beam restoration software reset.
   • Production

Monday, March 2

1. Last 24 hours
   • Smooth running. 5B triggers per day. Beam trip reduction: 21 trips/hour Friday swing - 10 trips/hour owl Monday.
   • AD00 study successful (contributing to 45/51 trips)
     • Report: https://logbooks.jlab.org/entry/3795114
     • Hall A bleed-through was hitting a flange
2. Reports/Issues
   • Hole in the FCal occupancy Sunday Owl: https://logbooks.jlab.org/entry/3795081.
     • Board replaced: https://logbooks.jlab.org/entry/3795190
   • root_spy crashes on gluon machines and DIRC plots aren't there.
   • Monitoring issue resolved after RCDB timestamp change.
     • New sets of reference plots needed for high luminosity
     • gluonraid4 filled: https://logbooks.jlab.org/entry/3795382
     • Collimator scan: https://logbooks.jlab.org/entry/3793951
   • New beam accidental scaling plot (Beni)
3. Run Plan
   • Production
   • Harp scan
   • Beam study tomorrow 9-5pm.