RC meeting and Run Plan, Saturday December 4th
From SBS wiki
RC Meeting Information
Run Coordinator: Eric King
No meeting today barring extraordinary events or a request by spokespersons.
Accelerator and Hall Status
Overall beam quality has been good. An overall uneventful day.
- (Accelerator) Third pass problem during owl which caused ~2.5hr loss event 14871.
- (Hall) Escorted access into the Hall was completed to install plastic absorber downstream of scattering chamber [1].
Run Plan
Ongoing plan is to continue taking production data. :) Cycle 4 completed, we are now on Cycle 5.
- Minor change to DAQ startup procedure.
- DAQ procedure should now be: Reset, Configure, Download, Start (Or Pre-start, Go) at the beginning of every run. This is an attempt to avoid the timing/latency issue. So far so good.
- Additionally the 5K Replay should be run at the beginning of each run and appropriate plots examined. Sheet that I've left for shift crew is here.
- GEM backgrounds reduced by 15% [2] with the insertion of the plastic absorber.
- Current on LH2 target is now 12uA.
- Current on LD2 target is now 10uA.
Triggered events collected
- Cycle 3 (Includes part of 12/3 DAY):
- LH2: ~20.4M
- LD2: ~86.4M
- Cycle 4 (Data taken on 12/4):
- LH2: ~7.9M
- LD2: ~84.9M
- Dummy Al: 3.5M
- Cycle 5:
- LH2: Started
Opportunistic Access Requests
This is running list of requests. I re-iterated to the PD this morning that if possible we need a quick escorted access for Holly to make a visual assessment of the INFN GEM panel that's currently off.
- [Ralph] Timing hodoscope need to remove card which will stay in hall.
- [Maria/Todd] GRINCH (It would be a 2 hour minimum).
- [Holly] Escorted access to get a visual inspection of the INFN GEM.
- Would require a extended down (Holly lives ~20 minutes away, OWL is okay).
