Difference between revisions of "Run Planning Meeting Notes, January 19 - January 25, 2023"

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(Monday January 23)
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=== Reports ===
 
=== Reports ===
* Harp scan Saturday morning
+
* [https://logbooks.jlab.org/entry/4113672 Empty target vertex reconstruction (Simon Taylor)]
 +
* [https://logbooks.jlab.org/entry/4113681 TAGM timing plots (Richard Jones)]
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* [https://logbooks.jlab.org/entry/4113756 DIRC LED performance (Bill)]
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* [https://logbooks.jlab.org/files/2023/01/4114183/HarpScanResultsExtraPolation_01212023_churamani.pdf Harp scan Saturday morning]. Convergence does not look very good, but we decided to run this way for now (amorphous runs).
 +
 
  
 
=== Issues ===
 
=== Issues ===
 
* RC volunteers needed (Beni's RC week because of his surgery, and Susan's week because she had to cancel her trip to the US). Hovanes and Simon volunteered to cover the two weeks.
 
* RC volunteers needed (Beni's RC week because of his surgery, and Susan's week because she had to cancel her trip to the US). Hovanes and Simon volunteered to cover the two weeks.
 
* Numerous pressure alarms.  
 
* Numerous pressure alarms.  
 +
* Beam energy oscillation investigation: Several accelerator experts are looking at it. No consensus whether it is real or not. Since it is at the MeV level, it should not be an issue for GlueX.
 +
* 30% increase in rates compared to Summer 2020 run period.
 +
**[https://logbooks.jlab.org/entry/4113855 Yields after BCM recalibration (A. Deur)]
 
* Target control issue.
 
* Target control issue.
 +
**[https://logbooks.jlab.org/entry/4113961 Target communication lost around 1pm Friday]. [https://logbooks.jlab.org/entry/4113908 Alarm acknowledged by shift crew without action or calling expert. New shift noticed this and called Hovanes.] Hovanes informed Alexandre who checked what was the issue and call then Chris Carlin. Chris C. could not come (catching a flight at the airport) but instructed the crew to switch the the back-up IOC, which apparently fixed the issue. However, the controlled came back in a confused state (Full but with heater on, an incompatible situation) so Alexandre informed Chris Keith [https://logbooks.jlab.org/entry/4113972 who went in (beam was off for repair during the whole event) with the shift leader (Dene) and partly fixed the issue by switching the target to local control.]
 +
**We can monitor the target, but not control it remotely (switch empty <=> full). For the moment, this is not a crucial problem.
  
 
=== Plans ===
 
=== Plans ===

Revision as of 17:59, 21 January 2023

Monday January 23

Past 72 hours

  • Beam was off from Friday 7:30am to Saturday 2am due to vacuum issue in south linac.
  • Saturday: Ran on amorphous (goni), 300 nA.

Shift Reports

  • Day shift summary [Friday], [Saturday], [Sunday]
  • Swing shift summary [Friday], [Saturday], [Sunday]
  • Owl shift summary [Saturday], [Sunday], [Monday]
  • Early Riser shift summary [Saturday], [Sunday], [Monday]

Reports


Issues

Plans

Friday January 20

Past 24 hours

Shift Reports

Reports

Issues

Plans

  • Thursday evening and Friday night:
    • Once beam come back, do Harp scans.
    • FCup test of our beam dump BCM.
    • Run 1h on the amo radiator of the goni (baseline for next runs below). 250 nA
    • Run 2h on 0.19E-4 RL amo radiator on radiator ladder (250 nA).
    • Run 2h on 1.12E-4 RL amo radiator on radiator ladder (250 nA).
    • Run (until the beam is taken away in the morning) on 3.4E-4 RL amo radiator on radiator ladder (250 nA).
  • Beam off starting Friday morning around 7:30am to fix vacuum issue in south linac, until 4pm(?).
  • When the beam comes back:
    • Harp scans
    • Production on goni amo radiator at 300 nA until Sunday morning.
  • Hall access:
    • Sergey F.
  • Diamond alignment: Sunday morning, ~9am.
  • Until then production on amorphous.
  • Link to runplan

Thursday January 19

Past 24 hours

  • Ran on empty target until 7:20am. Then, beam was taken away for beam and RF study and acceptable beam came back only Thursday at 1:10am. ABU= 4h for the day
  • refilled the target around 4:15pm.
  • Several accesses done during the day:
    • Scot
    • Sergey
    • David Lawrence
    • Cody
  • Took amorphous data, starting around 1:10am after aborted attempt to check diamond alignment.

Shift Reports

Reports

Issues

Plans

  • Beam off starting around 10am for RF study, nominally until 4pm+/-4h.
  • Hall in controlled access?
  • Diamond alignment: Friday day ? (Hovanes unavailable today)
  • Until Friday day, production on amorphous?
  • Link to runplan