Difference between revisions of "Run Planning Meeting Notes, August 25 - August 31, 2022"
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=== Issues === | === Issues === | ||
* [https://logbooks.jlab.org/entry/4035665 Hydra] | * [https://logbooks.jlab.org/entry/4035665 Hydra] | ||
− | * FCAL bases | + | * FCAL bases, 3 FCAL bases need to be replaced |
* CDC HV, problem HVBs I-1 and 26 (Naomi & Nick) | * CDC HV, problem HVBs I-1 and 26 (Naomi & Nick) | ||
Revision as of 07:53, 30 August 2022
Meetings are via ZoomGov: connect (Meeting ID: 160 199 0060 / Passcode 8394)
Hall D counting room white board
Back to Run Coordination Meetings:Fall2022
Contents
Tuesday, August 30
Past 24 hours
- Finish CCAL HV calibration (snake scan)
- Data production: empty Be target [1]
- More details can be found here:
Issues
- Hydra
- FCAL bases, 3 FCAL bases need to be replaced
- CDC HV, problem HVBs I-1 and 26 (Naomi & Nick)
Plan
Monday, August 29
Past 72 hours
- Halls in beam permit since Friday 1 pm
- Beam restoration took 2 hours
- No radiation study was done as advised by A. Deur
- CCAL snake scan with HallC bleedthrough beam [2][3] (Drew/Sasha)
- Bleedthrough was stable, no beam only for 6 hours on Sunday
- TAC run with cell (-4,4) and HallC bleedthrough beam (Sasha)
- Data production, Be empty target
- More details can be found here:
Issues
- RootSpy not working
- AC not working at high gain (Nick) [4]
- CDC, problem HVBs I-1 and 26 (Naomi & Nick)
- 3 FCAL bases need to be replaced on Wednesday or sooner if opportunistic access is possible (Mark)
- Target OVC Pressure (Chris) [5][6][7][8]
- Lost solenoid B-field on Sunday (Tim) [9] (it took most of the day to ramp up) [10]
- Tagger dump water flow, settings needed to be adjusted to new conditions?
Plan
- TAGM calibration (Richard)
- Debug AC (Nick)
- PS harp scan (Hovanes or shift crew)
- Empty target run (shift crew)
- Wednesday might be devoted to RF recovery/beam study, so halls access might be possible this day
Friday, August 26
Past 24 hours
- Status report on installation (Tim)
- CDC Pulser checkout (Nicholas)
- Start Counter Darkrate/Darkcurrent test (Beni)
- TAGH status (Sasha)
- Issues with the CCAL HV (Nicholas)
Issues
- Beam dump update. The current estimated date to fix the issue from ACC is by Aug 26 at noon
- CDC, problem HVBs I-1 and 26 (Naomi & Nick)
- Several HV power supply channels for CCAL were identified as not working properly. There is one broken CCAL signal cable to flash ADC (Sasha/Arshak)
- Some suspicious FCAL channels (Igal)
- hd_ops account does not allow login - emailed Sergey last night (Naomi)
Plan
- Finish hot checkout before noon
- Get beam in the hall and follows [11]
- Beam recovery may last a couple of hours
- Establish photon beam may start during SWING shift
Thursday, August 25
Past 24 hours
- Status report on installation (Tim)
- FDC chiller interlock (Hovanes)
- Reconnect RF to the TOF crate (Sasha & Arshak)
- Cabling CCAL (Sasha)
- Beam dump, both the relief valve and heat exchanger in hand
- TAGH status (Sasha)
Issues
- Beam dump update. The current estimated date to fix the issue from ACC is by Aug 26 at noon
- No beam between 12 am and 8 am, Saturday & Sunday and possibly also Friday & Monday
- CDC, problem HVBs I-1 and 26 (Naomi & Nick)
- Several HV power supply channels for CCAL were identified as not working properly. There is one broken CCAL signal cable to flash ADC (Sasha/Arshak)
- FDC chiller interlock issue (Lubomir)
- Some suspicious FCAL channels (Igal)
Plan
- Be ready for beam tomorrow at noon
The hot checkout page
Readiness Check List
- Solenoid (Eugene/Beni)
- Start the run with magnetic field on
- Surveys (Tim/Mark)
- FCAL survey
- TOF survey
- ST survey
- TAGM
- TAGH
- Survey beamline component (secondary collimator, PS, beam pipe downstream the PS, etc.)
- Survey CCAL after it's installed in the Hall
- DAQ (Sergei).
- Include CDC1, ST, and CCAL crates to the readout. Power the detector, continue taking cosmic data during the detector configuration change.
- Trigger (Alex S.)
- Check physics triggers
- Run CCAL trigger when the detector is installed in the Hall
- Connect / check CCAL LED and alpha triggers
- Beam line
- Install He beam pipe between FCAL and CCAL (Tim)
- Install led shielding wall in front downstream the PS (Tim)
- Radiator status
- Check amorphous radiator
- Tagger hodoscope (A. Somov)
- Install plates with TAGH counters
- Install / check repaired TAGH countes
- Tagger microscope (Tim / Richard Jones)
- Move TAGM to the new location and rotate
- Collimator Motion (Hovanes)
- Not changed
- Active collimator detectors(Richard Jones/Alexandre Deur)
- Move active collimator to 5 mm hole
- Check
- Profiler (Hovanes)
- Not changed
- Luminosity monitor (Hovanes)
- Not changed
- Halo monitors
- Not changed
- PS system (Alex Somov)
- Not changed
- Beam line magnets (PS magnet sweeping magnet and tagger quads).
- Change filed of the PS magnet
- Polarimeter (Sebastian Cole/M. Dugger)
- Optional, not used in PrimEx
- Targets (Chris/Tim/Alexandre D.)
- LH4
- Be
- TAC (Alex Somov/Hovanes)
- Use CCAL (TAC can be used as a backup)
- Slow control (Hovanes)
- Check CCAL
- RF (Sergei)
- Not changed
- Radiation monitors (Alexandre D.)
- Not changed
- Detector systems
- ST (Beni)
- Connect cables, check dark rate
- FDC (Lubomir)
- Not changed
- CDC (Beni)
- Move CDC1 crate to the nominal position, cable up
- Check readout
- BCal (Mark D. / Elton)
- Not changed
- FCal (Mark D.)
- Check / replace bases if needed
- ComCal (Alex Somov)
- Check detector controls (Nick)
- Install CCAL platform
- Check platform motion
- Installed detector on the platform
- Connect cables
- Connect LMS
- Check detector
- TOF (Beni)
- Remove inner acrylic absorber
- ST (Beni)