RC meeting and Run Plan, Wednesday April 22th

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RC Meeting Information

RC: Jimmy Caylor

Useful Links

• MCC White Board
• Hall A Electronic Logbook
• Ops elog
• Experiment run plans
• Shift Schedule

Current Status

On the accelerator side:

• Very nice over the weekend, rather poor delivery today

--> Hall C noninvasive BCM, not completely noninvasive

• Hall C going to 4-pass tomorrow, down ~4 hours starting at 9 am

On the Hall side:

• Detectors and DAQ seem to be working well (SBS GEMs in progress)

• Still working on getting reasonable efficiency with the SBS GEMs

--> HV tuning has helped some, more to do later today

--> Lower thresholds in software also helped some

• Sieve inserted this morning

--> Took reasonable stats on magnets off, straight through data

• Sieve comes out during this meeting

Current Run Plan

• Got what we could get with the sieve in today

• SBS GEM HV adjustments during swing

• Production running until they make us stop

GEN-RP KLL run plans

Notices in Effect for Shift Crew

• For controlled access call the RC and together you will fill out the Hall access checklist. [1]

• Please pay attention to BTM, incorrect accounting is happening. also make sure to submit all hours, including the last one.

• Please fill out the shift checklist and notify RC if there are any issues

Current Issues

• SBS GEM efficiency

• Anything else? Seems to be ok

Planned Accesses to the Hall

• Shielding Bricks - opportunistic

Sub-systems

• SBS and BB magnets
• BB GEMs
• BB Grinch - https://logbooks.jlab.org/entry/4282816
• BB Cal - Happy with 1.2 GeV threshold for production?
• BB scin - https://logbooks.jlab.org/entry/4282910
• SBS GEMs - Changing GEM gas, could be responsible for dead sectors? https://logbooks.jlab.org/entry/4283427
• SBS analyzer + RP hodo
• SBS HCAL - Coin window delay added and window changed
• DAQ
• Analysis
• Target - Sometimes does not want to move right to LH2, need to stop at carbon hole and then go
• Beam line
• Moller
• Raster