Run Planning Meeting Notes, May 8 - May 14, 2025
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Contents
Wednesday May 14
Last 24h
- No beam due to clogged magnet in arc 10
- Shift crew summaries
- Day, 08:00-16:00 cancelled
- Evening, 16:00-00:00 cancelled
- Owl, 00:00-08:00 cancelled
Reports
- Follow-up Re: FDC wire efficiency at 8/9V thresholds Follow-up Re: Follow-up Re: FDC wire efficiency at 8/9V thresholds (Alex, Lubomir)
- Numbers of triggers collected since start of production running
- PARA 0/90 deg: 1.84B
- PERP 0/90 deg: 2.46B
- PARA 45/135 deg: 2.49B
- PERP 45/135 deg: 2.43B
- AMO: 1.24B
Problems
- Updated VTP firmware (Sasha)
Plans
- Arc 10 magnet will be flushed starting 7:00AM
- Accelerator will change settings of helicity board between 10:00AM and 12:00PM (noon)
- Shifts will resume starting at 12:00PM (noon)
- Fill liquid-hydrogen target
- Hall-D Safety Walkthrough at 1:00PM
- When beam is back
- Perform harp scan(s)
- Try to improve beam convergence
- In [1], Jay Benesch provided possible steps to achieve better convergence.
- Check and tune trigger using AMO radiator
- Continue production running
- Start new sequence
- Perform harp scan(s)
Tuesday May 13
Last 24h
- No beam
- Magnet in Arc 10 is overheating due to clogging
- Shift crew summaries
- Day, 08:00-16:00 standby
- Evening, 16:00-00:00 cancelled
- Owl, 00:00-08:00 cancelled
Reports
- FDC wire efficiency at 8/9V thresholds (Lubomir)
- Low PS rates since last Wednesday (Alexandre)
- Numbers of triggers collected since start of production running
- PARA 0/90 deg: 1.84B
- PERP 0/90 deg: 2.46B
- PARA 45/135 deg: 2.49B
- PERP 45/135 deg: 2.43B
- AMO: 1.24B
Problems
- Problems booting roccdc2 (Sergey)
- ECAL FCAL studies, Missing fADCs for high energy ECAL hits, Follow-up Re: ECAL FCAL studies, ECAL mapping (Beni, Justin, Mark)
Plans
- Shifts until Wednesday 12:00PM (noon) are cancelled
- Arc 10 magnet will be flushed Wednesday starting 7:00AM
Monday May 12
Last 24h
- No beam
- Magnet in Arc 10 is overheating due to clogging
- Shift crew summaries
- Day, 08:00-16:00
- Evening, 16:00-00:00 cancelled
- Owl, 00:00-08:00 cancelled
Reports
- CDC voltages restored (Beni)
- Target was switched off instead of just emptied
- target is cooling down (Alexandre)
- Numbers of triggers collected since start of production running
- PARA 0/90 deg: 1.84B
- PERP 0/90 deg: 2.46B
- PARA 45/135 deg: 2.49B
- PERP 45/135 deg: 2.43B
- AMO: 1.24B
Problems
- None
Plans
- Waiting for beam
Sunday May 11
Last 24h
- No beam
- Repair of dipole power supply for our beam line [2]
- Shift crew summaries
Reports
- Online calibrations running (Sean)
- Since 23:45 TRD is included in "PHYSICS_DIRC" DAQ configuration
- Follow-up Re: Confusion about BPM AD00 x,y position (tagger dump) in shift worker checklist (Naomi)
- Numbers of triggers collected since start of production running
- PARA 0/90 deg: 1.84B
- PERP 0/90 deg: 2.46B
- PARA 45/135 deg: 2.49B
- PERP 45/135 deg: 2.43B
- AMO: 1.24B
Problems
- Rootspy issue: software is down? And cannot access Gluon159
- Resolved by Sergey by rebooting gluon159.
- HallD Run #131492: CDC Alarm not clearing, CDC voltages restored, HallD Run #131492: CDC alarm PV:CDC:hv:G13 (Beni)
Plans
- Continue production running
Saturday May 10
Last 24h
- Accesses to Hall D and tagger vault to replace ADC card in CDC and repair amorphous motor
- 12:30 tuning of beam convergence
- Since the beam optics for the whole accelerator was redone the convergence was far off
- We worked with MCC for 6h and performed several harp scans: [3] [4] [5] [6] [7] [8] [9]
- Final harp scan: [10] [11] [12] [13]
- There is certainly room for improvement. In [14], Jay Benesch provided possible next steps.
- Coherent edge after fix
- 18:30 start data taking
- Run 131481, raw mode with AMO radiator
- 19:45 Resumed production data taking
- Took 156M events for AMO and 294M events for PARA 0/90 deg. Then beam went away at 2:30 and did not return.
- PARA 0/90 deg runs 131490, 131491, 131492 taken with EXPERT config that includes TRD [15]
- Shift crew summaries
Reports
- Successful replacement of ADC card in CDC Follow-up Re: HallD Run #131473: CDC occupancy plot, fADC125 replacment in ROCCDC2, Roc 26 (CDC2) multiple readout errors, could we try re-download of the daq config or reboot the crate?, [16] [17], [18] (Beni/Naomi)
- Missing BCAL LED front panel triggers (Zisis)
- FDC discr. thrsholds set to 8V, FDC discr. thresholds increased to 9V (Lubomir)
- Successful repair of stuck motor for amorphous radiators and harp wires Tagger amorphous radiator service Amorphous radiator stick problem (Hovanes)
- HallD Run #131483: Turn on Random Pulser
- Numbers of triggers collected since start of production running
- PARA 0/90 deg: 1.84B
- PERP 0/90 deg: 2.46B
- PARA 45/135 deg: 2.49B
- PERP 45/135 deg: 2.43B
- AMO: 1.24B
Problems
Plans
- Perform harp scan when beam back.
- Continue production running
- Start with remaining 506M events for PARA 0/90 deg
Friday May 9
Last 24h
- No beam since Wed, May 7, 06:30
- MCC worked on beam-optics restore
- Beam back at about 2:30am
- Harp scan 1: [19][20][21][22]
- Convergence not good
- Hard scan 2: [23][24][25]
- Inconclusive because data from our harp missing
- No useful data taken
- Shift crew summaries
Reports
- Hall D Target Controls Restarted
- Follow-up Re: MAJOR alarms on solenoid cryogenics (Josh)
- Replaced fan tray of VXS crate D2-8-BOT DIRC
- FDC Wire Efficiency Update (Alex)
- New FCAL HVs (Mark)
- 2 FCAL base changed (Mark)
- New FCAL HVs (Mark)
- Numbers of triggers collected since start of production running
- PARA 0/90 deg: 1.55B
- PERP 0/90 deg: 2.46B
- PARA 45/135 deg: 2.49B
- PERP 45/135 deg: 2.43B
- AMO: 1.08B
Problems
- Issue: Failed to retract amorphous radiator
- Program crushed after press analyze button when finishing Harp scan
- Runs won't start, Sergey excluded part of CDC
Plans
- Perform Harp scans
- Take 10 min raw-mode run
- Take production data
- Start with remaining 121M events on amorphous radiator, then continue with diamond sequence
Thursday May 8
Last 24h
- Maintenance day, no beam since 06:30
- After maintenance: beam optics restore of accelerator
- Shift crew summaries
Reports
- FCAL bases failing (Mark)
- ECAL connector fixed (Sasha)
- Moller scattered beam monitors and scanner detectors installed (Sasha)
- Hall D Tagger Aluminum Dump Skid (Tim)
- Energy-dependence of rho decay asymmetry (Alex)
- Hall D LCW adjustment (Tim)
- Numbers of triggers collected since start of production running
- PARA 0/90 deg: 1.55B
- PERP 0/90 deg: 2.46B
- PARA 45/135 deg: 2.49B
- PERP 45/135 deg: 2.43B
- AMO: 1.08B
Problems
- FCAL base (-13:-18) lockup unable to be cleared by resetting HV setpoints
- DIRC crate not reachable via network (Sergey)
- Issue of Alarm of TGTCRIO:hb_check from CONTROLS->LabView [26] (Alexandre)
Plans
- Beam not expected before 12pm
- MCC will start with Hall A
- When beam is back: perform Harp scans
- Take production data
- Start with remaining 121M events on amorphous radiator, then continue with diamond sequence