Run Planning Meeting Notes, Dec 5-Dec 11, 2018

Wed, Dec 5 at 8:45

1. Several items were fixed during a controlled access in the morning
   • Amorphous radiator ladder by Hovanes and Scot
   • Colin replaced a few bad FCAL bases
   • Sasha checked one noising CompCal channel and found out that it was caused by the FADC baseline
2. Sasha adjusted CCAL LED trigger time delay https://logbooks.jlab.org/entry/3635382
3. Production trigger rate and CompCal rate study was performed by Sasha during afternoon and evening, https://logbooks.jlab.org/entry/3635399, https://logbooks.jlab.org/entry/3635391
4. MCC plan for the coming week
   • MCC will continuously deliver beam throughout the rest of week with 1.83 GeV/pass (10.3 GeV for Hall D).
   • On Dec 9 (Monday), the beam will be off at 6:00am. MCC will change energy to 1.61 GeV/pass (9 GeV for hall D). This process is planned for three days (DeC 9-12).
5. Jay Benesch has initiated a discussion with a group of experts to investigate the feasibility of monitoring 1-2 nA beam current for Hall D.
6. Tagger scaler distribution shows that we have beam leakage from Hall C. https://logbooks.jlab.org/entry/3635351
7. We have been taking Compton production data on LH2 target since midnight.

Wed, Dec 6 at 8:45

1. Several items were fixed during a controlled access in the morning
   • Change electronics for DAQ by Sasha
   • Calibrate He level DP for solenoid magnet by Marc and Scott
2. A few hours used to test newly updated DAQ by Sasha and Ben
3. ~5 hours no beam from late afternoon to evening
4. Finish CompCal scan during owl shift
5. Colin and Josh adjusted FCAL high voltages for the inner four layers of counters based on the gain factors provided by Ilya.