Run Planning Meeting Notes, October 7 - October 13, 2021
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Contents
Wednesday, October 13
- In last 24 hours:
- Early Riser: https://logbooks.jlab.org/entry/3923310
- Owl summary: https://logbooks.jlab.org/entry/3923114
- Swing summary: https://logbooks.jlab.org/entry/3922919
- Day summary: https://logbooks.jlab.org/entry/3922741
- Offline skim are now available https://logbooks.jlab.org/entry/3922774 (Sean)
- Lowered HV on FDC2 Cell3 HV1p https://logbooks.jlab.org/entry/3922784 https://logbooks.jlab.org/entry/3922969 (Lubomir)
- Mirror test results https://logbooks.jlab.org/entry/3922828 (Bill)
- Trigger in E_BCAL vs E_FCAL space, solenoid Off and On https://logbooks.jlab.org/entry/3922891 (Mark D.)
- CDC efficiency looks good and is slightly better than usual (rate effect?) (Naomi)
- CDC HV tuning by AI started (David)
- HallA setup in progress https://logbooks.jlab.org/entry/3923052
- Production on He target with magnetic field, run conditions https://logbooks.jlab.org/entry/3923070 (Sasha)
- Issues:
- RCDB info was missing & host problem (Sergey)
- Solenoid Coil Vaccum Stripchart https://logbooks.jlab.org/entry/3922338 & https://logbooks.jlab.org/entry/3922646 (Tim/Joerg)
- FDC hot wire https://logbooks.jlab.org/entry/3922880 (Lubomir/Daniel)
- BCAL LED https://logbooks.jlab.org/entry/3922858 (Varun)
- Bleedthrough
- Some beam in tagger hall shows spikes in some tagger hodoscope counters https://logbooks.jlab.org/entry/3922750 (Beni)
- Plan:
- 4 more shits with 200 nA and target filled with He
- Tomorrow around 8 am, start empty target run
Tuesday, October 12
- In last 24 hours:
- Early Riser: https://logbooks.jlab.org/entry/3922503
- Owl summary: https://logbooks.jlab.org/entry/3922367
- Swing summary: https://logbooks.jlab.org/entry/3922242
- Day summary: https://logbooks.jlab.org/entry/3922048
- Solenoid Refrigerator maintenance https://logbooks.jlab.org/entry/3922021 & https://logbooks.jlab.org/entry/3922069 (Tim)
- Beam stopped at 4 pm and back at 9:30 pm
- Solenoid magnet ramp up started at 4 pm and finished at 12 am (Beni)
- FCAL2 module testing https://logbooks.jlab.org/entry/3922319 (Sasha)
- CCAL LED status https://logbooks.jlab.org/entry/3922244 (Sasha)
- Hall D now using C-slit. A with A slit and at 250 MHz. https://logbooks.jlab.org/entry/3922295
- Radiation monitored https://logbooks.jlab.org/entry/3922357 & https://logbooks.jlab.org/entry/3922351
- HARP scan https://logbooks.jlab.org/entry/3922362, https://logbooks.jlab.org/entry/3922361, & https://logbooks.jlab.org/entry/3922368 => https://logbooks.jlab.org
- FDC discriminator threshold changes https://logbooks.jlab.org/entry/3922596 (Lubomir)
- CDC HV scan https://logbooks.jlab.org/entry/3922428 (Naomi/Hovanes/Malte)
- Time calibration w/ Bfield https://logbooks.jlab.org/entry/3922426 (Sean)
- Issues:
- Bleedthrough
- 10 FCAL bases changed https://logbooks.jlab.org/entry/3922169 & https://logbooks.jlab.org/entry/3922285 (Mark/Malte/Rebecca)
- Gluonraid1 is almost full https://logbooks.jlab.org/entry/3922240 (Hovanes)
- Plan:
- Take production data at 200 nA w/ target filled w/ He
Monday, October 11
- In last 72 hours:
- Friday:
- Early Riser: https://logbooks.jlab.org/entry/3920548
- Owl summary: https://logbooks.jlab.org/entry/3920473
- Swing summary: https://logbooks.jlab.org/entry/3920317
- Day summary: https://logbooks.jlab.org/entry/3920160
- Beam stopped at 10 am and was out for 4 hours for an agreed accelerator maintenance
- PS bkg https://logbooks.jlab.org/entry/3920174 (Tim)
- Solenoid test ramp https://logbooks.jlab.org/entry/3920171 (Tim)
- FCAL PMT HV changed for three blocks https://logbooks.jlab.org/entry/3920195 (ig)
- Radiation monitored https://logbooks.jlab.org/entry/3920317 & HARP scan https://logbooks.jlab.org/entry/3920420
- Saturday:
- Early Riser: https://logbooks.jlab.org/entry/3921075
- Owl summary: https://logbooks.jlab.org/entry/3920899
- Swing summary: https://logbooks.jlab.org/entry/3920728
- Day summary: https://logbooks.jlab.org/entry/3920633
- Rates evolution https://logbooks.jlab.org/entry/3920582 (Alexandre D.)
- Vacuum "Burp" on coil 4 is beginning to subside https://logbooks.jlab.org/entry/3920779 https://logbooks.jlab.org/entry/3920777 (Tim/Mark)
- Hall C off leads to >2 mm excursion upstream https://logbooks.jlab.org/entry/3920887 (Mark)
- Difference in beam - rf timing distribution depending on trigger type https://logbooks.jlab.org/entry/3921020 (Drew)
- Sunday:
- Early Riser: https://logbooks.jlab.org/entry/3921867
- Owl summary: https://logbooks.jlab.org/entry/3921710
- Swing summary: https://logbooks.jlab.org/entry/3921392
- Day summary: https://logbooks.jlab.org/entry/3921282
- Recovered locked-up FCAL base https://logbooks.jlab.org/entry/3921539 (Malte)
- Rates evolution https://logbooks.jlab.org/entry/3921950 (Alexandre D.)
- Friday:
- Issues:
- Bleedthrough
- FCAL bases changed https://logbooks.jlab.org/entry/3920207 (Mark/Rebecca/Malte)
- Problem with RCDB host https://logbooks.jlab.org/entry/3920651 (Elton)
- DAQ CCAL alarm https://logbooks.jlab.org/entry/3920676
- Solenoid
- Alarm https://logbooks.jlab.org/entry/3920696 (Elton/Keith)
- Temperature https://logbooks.jlab.org/entry/3921857 (Hovanes)
- General diagnostic https://logbooks.jlab.org/entry/3921941 (Tim)
- rootstpy problem due to connection to ccdb solved by using squilte (David)
- Plan:
- Reference plots needs to be updated
- No beam between 4pm and 9pm (tentavily) <= Hall A is not ready yet
- Ramp up solenoid at 4pm
- Once ramp up and beam back calibration (1.2 shift) of
- Empty or target fill will be decided at 4 pm by the PIs
Friday, October 8
- In last 24 hours:
- Early Riser: https://logbooks.jlab.org/entry/3920059
- Owl summary: https://logbooks.jlab.org/entry/3919945
- Swing summary: https://logbooks.jlab.org/entry/3919677
- Day summary: https://logbooks.jlab.org/entry/3919504
- Helicity configuration changed for HallA https://logbooks.jlab.org/entry/3919498, no beam for several hours in HallC/B/D
- Updated Documentation on myaPlot https://logbooks.jlab.org/entry/3919509 (Elton)
- 1.5B triggers at 200 nA
- Production rate scan https://logbooks.jlab.org/entry/3919648 (Sasha)
- CCAL LEDs, 200 nA and 50 nA https://logbooks.jlab.org/entry/3919571 (Sasha)
- BCAL run, 81418, with TPOL converter retracted, 200 nA & PRIMEX/PHYSICS cfg https://logbooks.jlab.org/entry/3919569 (Elton/Mark)
- Issues:
- Bleedthrough https://logbooks.jlab.org/entry/3919567 (Beni)
- FCAL suspicious channels https://logbooks.jlab.org/entry/3919561
- Plan:
- 100 nA (2 shifts)
- Turn the magnet on and ramp to low current (50A)
- Hall A will be back online Monday morning
- Tuesday Beam study / RF recovery will probably be postponed to a later day
Thursday, October 7
- In last 24 hours:
- Early Riser: https://logbooks.jlab.org/entry/3919395
- Owl summary: https://logbooks.jlab.org/entry/3919305
- Swing summary: https://logbooks.jlab.org/entry/3919178
- Day summary: https://logbooks.jlab.org/entry/3918973
- Production run started at 20:58
- 0.21B triggers with hot & cold Helium empty target cell
- 0.7B triggers with He target full
- Target cooled down and filled with liquid He4
- HallD cavity BPM calibration, https://logbooks.jlab.org/entry/3919129
- Gas bottle changed, https://logbooks.jlab.org/entry/3919183 (Elton)
- Issues:
- Solenoid alarm (Amy)
- Target software, https://logbooks.jlab.org/entry/3919168 (Carlin)
- Target, LH2 temperature interlock not changed, https://logbooks.jlab.org/entry/3918975 (Elton)
- LED skim, https://logbooks.jlab.org/entry/3918989
- Camera https://logbooks.jlab.org/entry/3918788
- Bleedthrough Different Beam structure after target change (Tuesday evening)
- Plan:
- Special run for BCAL, TPOL retracted, 5 mn beam at 200 nA, normal DAQ cfg
- 200 nA CDC & FDC turn off (3 shifts)
- 100 nA CDC & FDC turn off (2 shifts)
- MCC will run the Moller at helicity flip rate for HallB which might disrupt HallD beam
- If Hall A is back online today (unlikely most probably tomorrow)
- Check radiation
- HARP scan
- Bleedthrough run with 10 kHz random pulser, HallD laser turn off, and no beam for 40mn