Difference between revisions of "Run Planning Meeting Notes, Feb 28 - Mar 6, 2019"
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#** FCAL survey from 2015 shows it is shifted in +x direction by 0.5 cm, which matches the shift in CompCal acceptance | #** FCAL survey from 2015 shows it is shifted in +x direction by 0.5 cm, which matches the shift in CompCal acceptance | ||
# Compton production statistics | # Compton production statistics | ||
| − | # | + | #* 0.24 billion triggers with no target ([https://halldweb.jlab.org/rcdb/runs/search?runFrom=61308&runTo=61311&q=beam_current+%3E+25+and+event_count%3E5e5 Runs 61308-61311]) |
| − | # | + | #* 2.86 billion triggers with Be ([https://halldweb.jlab.org/rcdb/runs/search?runFrom=61321&runTo=61344&q=beam_current+%3E+25+and+event_count%3E5e5 Runs 61321-61344]) |
#* 0.42 billion triggers with empty target holder cylinder ([https://halldweb.jlab.org/rcdb/runs/search?runFrom=61345&runTo=61354&q=beam_current+%3E+25+and+event_count%3E5e5 Runs 61345-61354]) | #* 0.42 billion triggers with empty target holder cylinder ([https://halldweb.jlab.org/rcdb/runs/search?runFrom=61345&runTo=61354&q=beam_current+%3E+25+and+event_count%3E5e5 Runs 61345-61354]) | ||
#* Summary: Empty target is ~25% of statistics for Be target running | #* Summary: Empty target is ~25% of statistics for Be target running | ||
Revision as of 08:38, 1 March 2019
- Run_Coordination_Meetings:Spring2019_Run
- PrimEx-η run plan
- Production runs, number of triggers
- To join via a Web Browser, go to the page https://bluejeans.com/660743227
Thursday, Feb. 28 at 08:45
- Past 24 hours:
- Beam orbit locks off to allow Hall C current increase
- Unstable beam, lots of tuning to get high current for Hall A/C. 25 trips/hr average and will work to improve when they identify a path forward.
- Compton Production:
- 2.86 billion triggers with Be (Runs 61321-61344)
- 0.24 billion triggers with previous no target (Runs 61308-61311)
- Occupancy plots - Sasha
- Compton plot run 61322 - Drew
- Energy monitoring - Alexandre
- Today (Thursday):
- Remove Be foil @ 8 AM, but leave cylindrical holding tube. Lockup hall at ~1 pm
- Production running with no target until 6 am Friday morning
- Friday plan:
- LHe target installation:
- Hall open at 6 am for bleeding up beamline
- LHe target installation:
Friday, Mar. 1 at 08:45
- Past 24 hours:
- Be target removed
- Examination of material in beamline
- Shift in CompCal acceptance along +x
- FCAL survey from 2015 shows it is shifted in +x direction by 0.5 cm, which matches the shift in CompCal acceptance
- Compton production statistics
- 0.24 billion triggers with no target (Runs 61308-61311)
- 2.86 billion triggers with Be (Runs 61321-61344)
- 0.42 billion triggers with empty target holder cylinder (Runs 61345-61354)
- Summary: Empty target is ~25% of statistics for Be target running
- Today's plan:
- LHe target installation:
- Hall opened at 6 am for bleeding up beamline and target removal
- Target installation and survey throughout the day
- Other work in the Hall: start counter installation, others?
- LHe target installation:
- LHe target cooldown and filling schedule?
- Chris expects ~10-12 hours required for cooldown. He would like to be here during the initial fill.
- Possible plan: Run warm empty target for few shifts, start cooldown over the weekend and fill on Sunday/Monday?
