Difference between revisions of "Run Planning Meeting Notes, October 20 - October 26, 2022"

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(Shift Summary)
(Past 24 hours)
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*Same Target Issue happened at 20:50 again, switched back ON the PTR, and in both cases contacted to Chris Carlin, he will keep an eye on it
 
*Same Target Issue happened at 20:50 again, switched back ON the PTR, and in both cases contacted to Chris Carlin, he will keep an eye on it
 
*22:10 asked for Rapid Access to let Chris Carlin take a look on the heater/cooler control box
 
*22:10 asked for Rapid Access to let Chris Carlin take a look on the heater/cooler control box
 +
*Collected data for LHe ~1.75B events
  
 
=== Shift Summary ===
 
=== Shift Summary ===

Revision as of 07:41, 21 October 2022

Meetings are via ZoomGov: connect (Meeting ID: 160 199 0060 / Passcode 8394)

MCC whiteboard

Hall D counting room white board

Hall D Logbook

Back to Run Coordination Meetings:Fall2022

Thursday, October 21

Past 24 hours

  • Continued taking data at 200nA with EMPTY Target Cell till ~14:00, collected ~0.65B events, overall collected data for past period 1.533B events
  • 15:00 Beam was OFF for ~2.5 hours for Injector Restoration
  • At 16:10 started filling the target with LHe
  • ~17:40 Beam was back, started collecting data with 200nA and FULL target
  • 17:58 FDC:hv:2:c3:3n channel HV tripped, tried to turn it ON, with different ways, but continuously it was tripping, contacted to Lubomir he changed the HV from 500V to 400V https://logbooks.jlab.org/entry/4064442
  • 19:20 Target alarm comes ON, the Pulse Tube Refrigerator(PTR) was switched off resulting in increase of the target cell temperatures from 4.27 to about 4.6 K
  • Same Target Issue happened at 20:50 again, switched back ON the PTR, and in both cases contacted to Chris Carlin, he will keep an eye on it
  • 22:10 asked for Rapid Access to let Chris Carlin take a look on the heater/cooler control box
  • Collected data for LHe ~1.75B events

Shift Summary

Issues

Plan

Continue running on the FULL LHe target at 200nA

Wednesday, October 20

Past 24 hours

  • Beam was Off most of the day starting from ~7:30am for "ARW Tour and Associated Maintenance" and VCG1L1210(SRF Insulating Vacuum)
    • During dawn time Mark and Malte replaced some Fcal bases (2?)
    • Vlad and Arshak did some alignment on the prototype
    • Kondo conducted some work on GEM-TRD
  • Restored Beam to the Hall-D at ~22:30, after 15 hours of downtime
  • After Beam restoration Harp Scan was performed and started run on the Empty LHe4 Cell target with 200nA
  • Collected for about 0.3B events
  • At 7:45 meeting informed MCC about beam position instability


Shift Summary

Issues

Plan

Continue running on the Empty target at 200nA