RC meeting and Run Plan, Wednesday May 8th
Contents
RC Meeting Information
Current RC: Eric Fuchey; Passover to Holly Szumila Vance after RC meeting
RC Daily Meetings are at 3:30 (pm) via Zoom and in person in the counting house meeting room (2nd floor)
- Zoom connection link: https://jlab-org.zoomgov.com/j/1616220064
- Meeting ID: 161 622 0064
Useful Links
Summary
Overall smooth beam delivery.
HV increase on HCal to increase HCal trigger efficiency: https://logbooks.jlab.org/entry/4298852 https://logbooks.jlab.org/entry/4298859 https://logbooks.jlab.org/entry/4298885 Took 2 hrs on LH2 to evaluate the effect of this increase. Improvement of elastic selection while raising threshold to -14 mV: https://logbooks.jlab.org/entry/4299080 One APV had accidentally been removed from the configuration yesterday morning. It was put back in the configuration yesterday evening. https://logbooks.jlab.org/entry/4299090
Planned Access to the Hall
Access Thursday:
- GEMs work:
- swap power supplies for currently non-working modules (e.g. rear GEM module 0)
- possibly, swap non-working APVs on rear GEM modules;
- Active analyzer:
- remove signals splitters and send full signal to ADC;
- adjust side polarimeter thresholds;
- ECal:
- get more channels in the ECal readout
Accelerator
Plan unchanged from yesterday:
- Hall C pass change + Wien angle change on Thursday;
- no Wien angle change next Tuesday for Hall A pass change;
- Accelerator beam studies currently scheduled on May 19th starting at 7am
Current Run Plan
Take data at 10 uA for production on LD2: BBCal threshold at -350 mV and HCal threshold at -14 mV for now. Once day (preferably during day shift), take a 3 hours at 15 uA on LH2 with the production settings. See also Experiment run plans.
Current Issues
Future plans
Maybe? A projection of \gamma p -> pi+ n at 2 pass, SH threshold 0.8 GeV
