Difference between revisions of "Run Planning Meeting Notes, April 3-April 10, 2016"

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## No beam or poorly positioned beam until ~3:30am Sunday April 3
 
## No beam or poorly positioned beam until ~3:30am Sunday April 3
 
## [https://logbooks.jlab.org/entry/3394922 Bleedthrough from Hall-A]
 
## [https://logbooks.jlab.org/entry/3394922 Bleedthrough from Hall-A]
 +
## Accelerator experts convening this morning to form plan for fixing issues with beam. May be disruptive today or tomorrow morning as they implement plan
 
## Hall A gets priority Today
 
## Hall A gets priority Today
 
# Hall-D/GlueX items
 
# Hall-D/GlueX items
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## beam intensity fluctuations
 
## beam intensity fluctuations
 
##* Hovanes suggests regular harp scans, including two ACC harps in D beamline, MCC must do those
 
##* Hovanes suggests regular harp scans, including two ACC harps in D beamline, MCC must do those
 +
##* Request accelerator formalize scan procedure for 5C11 and 5C11B. Todd will write something up
 
## other systems?
 
## other systems?
 
# Run Plan
 
# Run Plan
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## PS magnet current studies
 
## PS magnet current studies
 
## TRD run
 
## TRD run
 +
## DAQ Studies
 
## Microscope alignment (Alex B.)
 
## Microscope alignment (Alex B.)
−
## production running
+
## Production running
 
# Offline analysis?
 
# Offline analysis?
 
# AOB?
 
# AOB?

Revision as of 08:38, 4 April 2016

Monday, April 4

  1. Accelerator Status
    1. No beam or poorly positioned beam until ~3:30am Sunday April 3
    2. Bleedthrough from Hall-A
    3. Accelerator experts convening this morning to form plan for fixing issues with beam. May be disruptive today or tomorrow morning as they implement plan
    4. Hall A gets priority Today
  2. Hall-D/GlueX items
    1. Completed empty target run with amorphous radiator
    2. Difficulty getting consistent PARA and PERP at same location on JD70-118. Switch to JD70-119.
    3. CDC HV trips frequently. Current trip levels had inadvertently been reduced to 2uA (fixed)
    4. beam intensity fluctuations
      • Hovanes suggests regular harp scans, including two ACC harps in D beamline, MCC must do those
      • Request accelerator formalize scan procedure for 5C11 and 5C11B. Todd will write something up
    5. other systems?
  3. Run Plan
    1. empty target run
    2. Satellite peak study (move beam)
    3. PS magnet current studies
    4. TRD run
    5. DAQ Studies
    6. Microscope alignment (Alex B.)
    7. Production running
  4. Offline analysis?
  5. AOB?

Sunday, April 3

  1. Accelerator Status
    1. Beam was gone until ~2am Saturday April 2
    2. Frequent RF trips, poor profile scans, poor enhancement
    3. Spotty or unacceptably poor beam from 13:00 Saturday to 3:30 Sunday (Issues with bleedthrough from other halls (?))
    4. Improved beam profile
    5. Hall A gets priority Monday
  2. Hall-D/GlueX items
    1. Completed empty target run with both PARA and PERP orientations
    2. Difficulty getting consistent PARA and PERP at same location on JD70-118. Switch to JD70-119.
    3. CDC HV trips frequently
    4. beam intensity fluctuations
    5. tagger harp scan shows sigma_x = 0.9 mm, sigma_y = 1.1 mm, possibly better focusing on collimator
      • Hovanes suggests regular harp scans, including two ACC harps in D beamline, MCC must do those
    6. Shift-takers run comments: Discussion deferred
    7. other systems?
  3. Run Plan
    1. empty target run
    2. PS magnet current studies
    3. TRD run
    4. Satellite peak study (move beam)
    5. Microscope alignment (Alex B.)
    6. production running
  4. Offline analysis?
  5. AOB?
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