Difference between revisions of "Run Planning Meeting Notes, Mar 21 - Mar 27, 2019"

Revision as of 07:31, 26 March 2019

Past 24 hours:
- RF recovery during the day shift
- Beam recovery delayed due to (1) issue in the injector, resolved by evening, then (2) UPS battery needs replacement in the north linac.
Issues
- low counts seen in bcal sector (logbook entry 3670196)
Reports
- helium target refilled, ready
- trigger rate and beam flux history for Spring 2019 run
Today:
- Production: 200nA, Al 10^-4
Run Plan
- Production running: when beam returns, check beam conditions as follows:
  1. do harp scans, both accelerator and Hall D radiator
  2. check radiation monitor rates in tagger hall and Hall D
  3. verify transmission in PSC and PS coincidence rates @ 200nA, 1e-4 radiator
- Beam studies planned for day shift on Monday
- RF Recovery scheduled for Tuesday

Past 24 hours:
- beam recovery, conditions checked, running resumed.
Issues
- HV tripped on two inner FCal blocks (logbook entry 3670196)
- HV in CDC tripped, without alarm! (logbook entry 3670885)
Reports
- collimator transmission drops again (logbook entry 3670862)
Today:
- Production: 200nA, Al 10^-4
Run Plan
- Production running continues
- Beam studies planned for day shift on Monday
- RF Recovery scheduled for Tuesday

Past 72 hours:
- production running on He target until Sunday 5:30pm
- continued running on empty target through Monday 8:30am
- now in controlled access, RF recovery underway
Issues
- Ongoing issue with CDC HV readback (logbook entry 3670885, 3671598, 3671943)
- PS scalers communication issue (logbook entry 3670950)
- DAQ interruptions ~1 per shift, recovery is straight-forward ([1], [2])
- Compcal monitoring plots, timing shows double peak, considered ok (logbook entry 3671757)
- Compcal HV communication failure (logbook entry 3671849 around 1:00am)
- FCal HV communication failure (logbook entry 3671351)
- Individual FCal bases need reset (logbook entry 3671386, resolved here)
- FCal fadc scalers stop updating (logbook entry 3671880)
- Accelerator tightens AC lock constraints (logbook entry 3671930)
Reports
- Several reference plots for monitoring histograms out of date (logbook entry 3671340)
- Active collimator lock is mostly working, sometimes fights to keep up (logbook entry 3671214)
- Accelerator using machine development time to investigate this effect in Hall D
Today:
- work on solenoid during 9:00am - 12:00pm, warm-up to begin (logbook entry 3670889)
- accelerator plans to work on Hall D line optics during second half of day shift
Run Plan
- Production running continues
- Beam studies planned for day shift on Monday
- RF Recovery scheduled for Tuesday

Past 24 hours:
- access day shift on Monday, out at 3:00pm
- beam restored by
- empty-target running continues
Issues
Reports
Today:
- machine rf recovery during day shift
- accelerator
Run Plan
- Production running continues
- Beam studies planned for day shift on Monday
- RF Recovery scheduled for Tuesday

@@ Line 63: / Line 63: @@
 # Today:
 #* work on solenoid during 9:00am - 12:00pm, warm-up to begin ([https://logbooks.jlab.org/entry/3670889 logbook entry 3670889])
+#* accelerator plans to work on Hall D line optics during second half of day shift
+#Run Plan
+#* Production running continues
+#* Beam studies planned for day shift on Monday
+#* RF Recovery scheduled for Tuesday
+== Tuesday, Mar. 26 at 08:45 ==
+# Past 24 hours:
+#* access day shift on Monday, out at 3:00pm
+#* beam restored by
+#* empty-target running continues
+# Issues
+#*
+# Reports
+#*
+# Today:
+#* machine rf recovery during day shift
 #* accelerator
 #Run Plan