Run Planning Meeting Notes, April 17 - April 23, 2025

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• Use Biweekly Meeting Link (first one) for Hall D 0845 RC Meeting

• MCC Whiteboard

• Hall-D Counting House Whiteboard

• Hall-D Logbook

Tuesday April 22

Shift Crew Summaries

• Day 0800-1600 (Nice template developed by Kevin Scheuer)
• Evening 1600-2400
• Owl April 23, 0000-0800

Reports

• ECAL missing \pi^0 problem: solved?
• ECAL HV adjusted HallD Run #131151: Ecal scaler rates
• Updated a few rootspy references with run 131153
• new RootSpy plot added: ECAL-RF timing

Issues

• Active collimator beam position deviations (04/22/2025 - 19:47)
• Beam position excursions

Plans

• Maintenance day:
  • SAF113 training (8+1 person)
  • Radcon survey for restrictive access
  • parasitic experiments
    • EIC + MOLLER (how many people?)
    • open the Hall gate
    • Dissasemble parts, Crane use
    • need to wrap up by 3-4pm

Monday April 21

Shift Crew Summaries

• Day 0800-1600
  • Harp Scan: Results and Extrapolation Hall D convergence tuning
  • Diamond alignment:
    • Scan result for TAGM:T:scaler_t1_wf_total_vs_ HD:GONI:Y.RBV_vs_ HD:GONI:X.RBV
    • Diamond alignment of JD80-212 45/135
• Evening 1600-2400
• Owl 0000-0800
  • FCAL HV adjusted
• Day 0800-1600

Reports

• ECAL low-level histograms
• TOF test run 131110
• MOLLER Beamtest preparations

Issues

• DAQ RocTrig2 failed again.
• Empty scalar readout channels in TAGH and PS since weekend status: TAGH scalers status: PS scalers
• DIRC scaler
• TOF ADC North 41 hot channel
• FCAL hot channel

Plans

• Diamond Alignment when beam is good
• FCAL trigger with new voltage (start from midnight, run 131133)
• Prepare for maintanence day tomorrow (Wed):
  • Restricted access for parasitic experiments
  • Crane use
  • SAF113 training

Weekend April 19-20

Shift Crew Summaries

• April 18: Day (0800-1600) Evening (1600-2400)
• April 19: Owl (0000-0800) Day (0800-1600) Evening (1600-2400)
• April 20: Owl (0000-0800) Day (0800-1600) Evening (1600-2400)
• April 21: Owl (0000-0800)

Reports

Sunday

• Suspicious ECAL modules
• TOF timing TOF discriminators

Saturday

• Comparison between different triggers (Igal)

Friday

• FCAL only trigger setup for the overnight production running
• Comparision between ECAL+FCAL/BCAL trigger with and without the 3 ECAL layers turn off
• Comparison between ECAL/BCAL and ECAL+FCAL/BCAL trigger
• Thresholds determined for Start Counter discriminators

Issues

Sunday

• RootSpy on gluon159
• TAGH/PS scaler readout
• FCAL problematic channel

Saturday

• Tagger magnet trip NMR probe is frozen

Friday

• Main trigger rate in EPICS is flat since about 11:46am
• Hall D beam energy not measured (IBCAD00CRCUR6) follow-up
• CAEN HV chassis causing problems

Plans

• ECAL bad channel testing
• Diamond Alignment: Hall A Reconfig (Tuesday-Thursday), start from Friday(4/25) 20 μA --> Monday(4/28) 50 μA

Friday April 18

Shift Crew Summaries

• 04/17 Owl 0000-0800
• 04/17 Day 0800-1600
  • Around 13:30, recovered from 5th pass separator trips
  • Harp Scan: Scan resultExtrapolation fit result
• 04/17 Evening 1600-2400
• 04/18 Owl 0000-0800

Reports

• Trigger for pi0 calibration
  • Updated config's name: FCAL_BCAL_PS_2025_mod_p9.conf
  • running it overnight (start from 131056 with 120 nA, now 131065), will check the pi0 yield
• Sean: updated the timing alignment calibrations as of run 131057
• Adjusting trigger timing offsets
• ECAL/FCAL energy calibration status
• TRD status: running with (ECAL+FCAL)+BCAL trigger
• 2025 MPGD Test beam setup

Issues

• Hall D Convergence
• TAGH: Cumulative stress on low-energy TAGH counters from persistent high occupancy at large beam current
  • Example Run 131046 with 300nA
  • Instruction on switching off low-energy TAGH counters
  • TAGH mapping issues with two modules: 21 and 50
• CDC: New dark straw
• TOF readout window missing triggers
• FCAL base locked up after 131062 stopped

Plans

• Short term run plan

Thursday April 17

Last 24hr

Shift Crew Summaries

• Owl (April 16 0000-0800)
• Day (April 16 0800-1600)
• Evening (April 16 1600-2400)
  • Harp scan: 5C11 5C11B radiatorHarp Scan Extrapolation
• Owl (Aprl-17 0000-0800)
  • Harp scan:scan resultHarp Scan Extrapolation (compare with Last week, 04/09)

Reports

During RF Recovery Day Hall D Access

• TAGH CAEN HV Crate T1-8-TOP replaced.
  • Related entry: TAGH Frozen Voltage Alarms: Channels 1-120, reported Tue, 04/15/2025
  • Remote power supply reset verified; CPU reset worked on second attempt.
• Goniometer controller reset done
• ECAL module check
• Solenoid PXI Watchdog ramp down behavior disabled
  • Related entry: Solenoid ramped down to zero, reported on Tue, 04/15/2025
• Added filter to barometric pressure
  • Related entry: Noisy pressure signal, reported Tue, 04/15/2025
  • Naomi's follow up
• TRD New Kr bottle
• FCAL base changes

Studies

• ECAL PMT magnetic shielding study
• Start Counter Discriminator and rates Threshold scan
• TOF HV scan

Software

• Rootspy updates

Issues

• Hole in tagger developed since run 131034 (resolved)
• alcohol to be added to upper bubbler soon

Plans

• Short term run plan
  • highest priority: ECAL+FCAL+BCAL trigger preparing for pi0 production
  • Diamond alignment
  • Production: pi0 running
  • anything else?