Difference between revisions of "Run Planning Meeting Notes, Mar 29-Apr 4, 2018"

Revision as of 14:14, 31 March 2018

Notes from the previous 24 hours:
- RF separator tested out ok, aimed to restore beam for swing shift but delayed due to CHL issues
- Beam arrived just before midnight, convergence not good, owl shift spent tuning
- 0800 MCC meeting notes - Todd retuning; planning machine work 4h Mon, 8h Tues MCC whiteboard
Issues:
- Shift-takers should at least log any acknowledged alarms so that they are not forgotten
- Is there a how-to page for the BTA sheet? (load from epics, edit etc & guidelines on ABU/BANU)
Reports:
Run Plan
- Re-establish Photon beam
- 1h production to check beam quality & detectors
- Diamond spot adjustment (Hovanes, needs to start before noon or try again tomorrow)
- CDC Background Studies (Lubomir et al.)
- Converter thickness study (Alex S.)
- SSP Study (Alex S., postpone to early next week)
- Production running
AOB

Notes from the previous 24 hours:
- - Todd retuned Hall D beamline Thursday morning, considerable improvement
  - Hovanes set diamond positions but didn't have time for spot adjustment, #1 for today
  - CDC background studies completed ?
  - Beam became less reliable throughout swing shift, improved after midnight
- 0800 MCC meeting notes - beam studies 0830-1230 Monday
- MCC whiteboard
Issues:
- Some rootspy hiccups, hopefully fixed
- Beam steering locks on 5C11B were off, there should be locks on 5C11B and the active collimator
- Tagger quadrupole current had loaded incorrect default value during tuning! MCC will correct the default and add alarms.
- BTA guidelines
Reports:
Run Plan
- Schematic
- Diamond spot adjustment (Hovanes, 2h) - done
- Converter thickness study (Alex S., 2h) - done, needs to check data quality
- CDC high thresholds (Beni, 2h) - abandoned, will try again later
- Production running through weekend, with possible 0.5h trigger work from Alex S.
- Over the weekend Richard will do prep work for the TAC run on Wed.
Next meeting: Sunday 10am
Thanks and best wishes to Tom Carstens who retires today

Notes from the previous 48 hours:
- Friday morning Hovanes found a new spot on the diamond; Sasha took converter thickness data
- Friday pm started CDC high threshold runs but lost beam due to Hall C's boiling study
- Friday eve Accelerator recovery from boiling study was slow. CDC threshold tests postponed. Beam position inconsistent, MCC having trouble with the locks
- Saturday early morning beam position became more stable
- Saturday morning RF trip
- MCC whiteboard
Issues:
- Gas shed key is absent
Reports:
Run Plan
- Schematic
- Through weekend: production running. Possible 1-2 trigger work from Alex S. Possible CDC high threshold runs when pressure stabilizes.
- Beam studies on Monday 0830+ could be longer than 4h. Duration of Tuesday's work is TBD. Hall C will need to finish boiling studies but not quite yet.
- Access requests for Monday: Lubomir and ???
AOB

@@ Line 58: / Line 58: @@
 #* [https://halldweb.jlab.org/wiki/index.php/File:Spring18_week12.jpg Schematic]
 #* Through weekend: production running.  Possible 1-2 trigger work from Alex S.  Possible CDC high threshold runs when pressure stabilizes.
-#* Beam studies on Monday could be longer than 4h.  Duration of Tuesday's work is TBD.  Hall C will need to finish boiling studies but not quite yet.
+#* Beam studies on Monday 0830+ could be longer than 4h.  Duration of Tuesday's work is TBD.  Hall C will need to finish boiling studies but not quite yet.
 #* Access requests for Monday: Lubomir and ???
 # AOB