RC meeting and Run Plan, Tuesday October 26th

Meetings Page

RC Meeting Information

RC Daily Meetings are at 3:15pm, remote connection link: https://bluejeans.com/256205934

Accelerator Status

1. DC Power still in tunnel
2. Pass Change not started
3. 3.5 uA limit to Hall A due to BLM trips. Higher currents require negotiations with Hall C

Hall A Status and News

1. In Restricted Access
2. Move to SBS-5 in progress

Current Run Plan

1. Pass-4 Setup
2. SBS-5

Subsystem Updates

1. HCAL
2. BBCal
3. Timing Hodoscope
4. Grinch
5. GEMS
6. DAQ
7. Replay Analysis

Reminders to shift crew

1. Check GEM gas mix every 2 hours
2. HALOG GEM efficiency plots e.g. (https://logbooks.jlab.org/entry/3930258)
3. Fill Out Run list
4. New Quick Beam checkout procedure (Target at home, Harps SCAN, check BPM strip chart) No C Hole after initial checkout completed at each configuration
5. Ramp BB magnet to 0 before "power off". Here is a nice entry by Jack here

Current Issues

1. Can't identify pulsar events in HCal (Ole, Alex)
2. Need script/method to determine # good events
3. Need script to get accumulated charge
4. Waiting for response from OPS about when "long" ramping procedure required on SBS quick ramp vs [ https://logbooks.jlab.org/entry/3931987 long procedure]
5. Rates in Hodoscope at ("300 kHz/1 uA on LD2 signals, 10 mV threshold, 40 mV signal on "FADC", "good" signal based on GeM tracks" D.Hamilton) Would like to do a HV scan on timing hodoscope (Ralph)

Useful Links

• MCC White Board
• sbs wiki