Difference between revisions of "Run Planning Meeting Notes, Nov 8-Nov 14, 2018"

Revision as of 15:51, 13 November 2018

Last 24h:
- 6h+ scheduled down time due to system recovery, but many problems
- Preparations for beam pipe installation (done)
- Upgrade to Hall D current locks + beam based test (30min)
- Only very little beam during the night, accelerator harp scan done [1][2], ours interrupted
- Switch back to standard production running:
  - Ramp up PS magnet to 910A (done)
  - Low-energy tagger counters off (done)
  - Set coherent peak at 8.8GeV (not done)
Issues
- Hot FCAL channel
Reports
- Monitoring (Thomas)
- Rho polarization for low-energy run (Alex)
Plans
- Beam Studies (Tuesday 08:30, 8h): installation of beam pipe
- French delegation to visit ComCal (6 people)
- Harp scan
- Production running
Notes

Last 72h:
- 6h down time on Friday due to HV issue on RF cavity 1L23
- 12h down on Saturday due to 1L23 and more
- 4h down on Sunday
- Completed the goal of 5 full cycles (2B events) on Sunday ~5pm
Issues
- Hot FCAL channel
Reports
Plans
- System Recovery (Monday 07:30, 6h+): switching back to 8.8GeV running?
- Beam Studies (Tuesday 08:30, 8h): installation of beam pipe
Notes

Last 24h:
- >80% beam available, >95% used
- completed 2nd cycle
- harp scan ongoing
Issues
- Sluggish CSS during the day, investigating
- Tagger dump BPM AD00c
Reports
Plans
- Beam Studies and System Recovery switched
- System Recovery (Monday 08:30): investigate water leak in tunnel, ~3h
- Beam Studies (Tuesday): high current test, halls A, B and C have to stayed locked, D optional
Notes

Last 24h:
- TAC run with empty target, v-wire at 50nA, reduced field in PS (400A), low E TAGH counters on
  - logbook entry with preliminary analysis
- Harp Scan
- Beam tuning (deferred)
- Data taking with reduced PS field, coherent edge at 7GeV
  - TAGH Rates (Amo), (Diamond), Coincidence Rates
  - Low energy running Trigger Spreadsheet
  - RF problems in the night
Issues
- PS and PSC coincidence scalers frozen, ps_client running on gluon100 restarted, instructions in hdops wiki
- beam position went awry, rates soared, reference module for IOC reading out 5C11B failed, replaced
- EPICS froze for 2h, started working without intervention, now again unresponsive
- Target PTR turned off, do not ignore any alarms!
Reports
- Monitoring
Plans
Notes

@@ Line 13: / Line 13: @@
 *[https://halldweb.jlab.org/wiki/index.php/File:Fall18_week8.jpg Hall D schedule for week 8]
 *[https://halldweb.jlab.org/wiki/index.php/File:Fall18_week9.jpg Hall D schedule for week 9]
+== Wednesday, Nov 14 at 08:45 ==
+#Last 24h:
+#* Installation of beam pipe
+#* Harp scan
+#* Switch back to standard production running:
+#** Ramp up PS magnet to 910A (done)
+#** Low-energy tagger counters off (done)
+#** Set coherent peak at 8.8GeV ('''not done''')
+#Issues
+#Reports
+#* Monitoring (Thomas)
+#Plans
+#* Production running
+#Notes
 == Tuesday, Nov 13 at 08:45 ==