Difference between revisions of "Run Planning Meeting Notes, June 16 - June 22, 2022"

From GlueXWiki
Jump to: navigation, search
Line 8: Line 8:
  
 
[https://docs.google.com/spreadsheets/d/1sdluzy7p5vnlhw9AWJHBrYbXKTBet45o4den4zWX9dc/edit#gid=1855021251 Spreadsheet with list of runs]
 
[https://docs.google.com/spreadsheets/d/1sdluzy7p5vnlhw9AWJHBrYbXKTBet45o4den4zWX9dc/edit#gid=1855021251 Spreadsheet with list of runs]
 +
 +
 +
=Monday June 20=
 +
 +
#Last 24h:
 +
#* Relatively good beam.
 +
#*[https://logbooks.jlab.org/entry/4005082 DIRC barbox alarm][https://logbooks.jlab.org/entry/4005314 DP fluctuation.]
 +
#*[https://logbooks.jlab.org/entry/4005074 CTOF readout threshold changed in horrible cludge.][https://logbooks.jlab.org/entry/4005306 Worked!]
 +
#*[https://logbooks.jlab.org/entry/4005118 Worked on AC position lock][https://logbooks.jlab.org/entry/4005119 Mysterious behaviour]
 +
#*[https://logbooks.jlab.org/entry/4005201 Could not run in PERP] Getting ion chamber trips. [https://logbooks.jlab.org/entry/4005263][https://logbooks.jlab.org/entry/4005271]
 +
#Reports
 +
#*[https://logbooks.jlab.org/entry/4005209 Lead frame position okay, not going to be moved again.]
 +
#*[https://logbooks.jlab.org/entry/4004338 New diamond spot analysis tool available]
 +
#Issues
 +
#*[https://logbooks.jlab.org/entry/4005315 CTOF FP trigger timing change in wrong direction]
 +
#*24 tagger channels off.  Tagger access tuesday to look at this.
 +
#Plans
 +
#*RF recovery Tuesday and machine tuning for Hall C high current.
 +
#**Change F1TDCs in Tagger that may be causing live time issues.
 +
#**Install helicity fibers in Tagger
 +
#**Change HV crate in tagger that is causing issues.
 +
#*Accelerator maintenance day Thursday
 +
#Commissioning steps temporarily postponed:
 +
#*Flux optimization/Act .Col. calibration
 +
#*PS and TAGH HV scans
 +
#*Bleed-through test: measure bleed-through with A slit as usual and A slit completely closed to see whether using B slit would help.
 +
 +
  
 
=Monday June 20=
 
=Monday June 20=
Line 15: Line 43:
 
#*[https://logbooks.jlab.org/entry/4004707 TOF signal size.]  To compare with 400 threshold.
 
#*[https://logbooks.jlab.org/entry/4004707 TOF signal size.]  To compare with 400 threshold.
 
#*[https://logbooks.jlab.org/entry/4004718 Changes to AC locks.]  Need to evaluate the impact. [https://logbooks.jlab.org/entry/4004792]
 
#*[https://logbooks.jlab.org/entry/4004718 Changes to AC locks.]  Need to evaluate the impact. [https://logbooks.jlab.org/entry/4004792]
 +
#*TAC setup work was done but ran out of time for actual TAC run.  That could be done today on Swing.
 
#* Beam returned at 8:30 pm.  Smooth production since then.
 
#* Beam returned at 8:30 pm.  Smooth production since then.
 
#Reports
 
#Reports

Revision as of 07:56, 21 June 2022

↑ Back to Run Coordination Meetings:Summer2022

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

MCC whiteboard

Hall D counting room white board

Spreadsheet with list of runs


Monday June 20

  1. Last 24h:
  2. Reports
  3. Issues
  4. Plans
    • RF recovery Tuesday and machine tuning for Hall C high current.
      • Change F1TDCs in Tagger that may be causing live time issues.
      • Install helicity fibers in Tagger
      • Change HV crate in tagger that is causing issues.
    • Accelerator maintenance day Thursday
  5. Commissioning steps temporarily postponed:
    • Flux optimization/Act .Col. calibration
    • PS and TAGH HV scans
    • Bleed-through test: measure bleed-through with A slit as usual and A slit completely closed to see whether using B slit would help.


Monday June 20

  1. Last 24h:
  2. Reports
  3. Issues
    • Beam position is unstable
    • DAQ live time fluctuations. [4] Tagger access tuesday to look at this.
    • 24 tagger channels off. Tagger access tuesday to look at this.
  4. Plans
    • RF recovery Tuesday and machine tuning for Hall C high current.
      • Change F1TDCs in Tagger that may be causing live time issues.
      • Install helicity fibers in Tagger
      • Change HV crate in tagger that is causing issues.
    • Accelerator maintenance day Thursday
  5. Commissioning steps temporarily postponed:
    • Flux optimization/Act .Col. calibration
    • PS and TAGH HV scans
    • Bleed-through test: measure bleed-through with A slit as usual and A slit completely closed to see whether using B slit would help.


Sunday June 19

  1. Last 24h:
  2. Reports
  3. Issues
  4. Plans
    • Flux optimization/Act .Col. calibration
    • RF recovery Tuesday
    • Accelerator maintenance day Thursday
  5. Commissioning steps temporarily postponed:
    • PS and TAGH HV scans
    • Bleed-through test: measure bleed-through with A slit as usual and A slit completely closed to see whether using B slit would help.

Saturday June 18

  1. Last 24h:
  2. Reports
    • From PD-RC 8:45 meeting.
      • Generally everyone is somewhat unhappy. :-(
    • CPP dEdx issues. CDC is likely fine. Its gain and hit efficiency (hits found/hits measured) are normal. But tracking is missing the start counter, & the target isn't in the usual spot.
  3. Issues
    • 24 tagger channels off.
  4. Plans
    • Flux optimization/Act .Col. calibration
    • Trigger development for TOF trigger
    • RF recovery Tuesday
    • Accelerator maintenance day Thursday
  5. Commissioning steps temporarily postponed:
    • PS and TAGH HV scans
    • Bleed-through test: measure bleed-through with A slit as usual and A slit completely closed to see whether using B slit would help.


Friday June 17

  1. Last 24h:
    • Tagger voltage alarms
    • Beam returned at 11 pm.
    • Harp scans performed [7][8][9]
    • Beam envelope looks good Accelerator have asked us to put these projections in the elog in future.
    • No CH edge observed. Hovanes helped to get diamond aligned overnight. [10]
    • Ran quasi production for NPP. Pressure change CDC alarm twice.
  2. Reports
    • From PD-RC 7:45 meeting.
      • Hall C not getting high current, more work is needed
      • Hall B will need a spin dance
    • Low rates in TOF [11] and low current in CDC [12]
    • Spreadsheet with list of runs
  3. Issues
    • 24 tagger channels off
  4. Plans
    • Flux optimization/Act .Col. calibration
    • Trigger development for TOF trigger
    • RF recovery Tuesday
    • Accelerator maintenance day Thursday
  5. Commissioning steps temporarily postponed:
    • PS and TAGH HV scans
    • Bleed-through test: measure bleed-through with A slit as usual and A slit completely closed to see whether using B slit would help.

Thursday June 16

  1. Last 24h:
    • No beam since last meeting
    • Still getting tagger voltage alarms (should we just turn those counters off?)
  2. Reports
  3. Issues
    • High trigger rate in CTOF
      • MWPC #6 window cover removed. If successful, great. Otherwise, attempt to move helium bag downstream.
  4. Plans:
  5. Upcoming Items:
    • PS and TAGH HV scans
    • Bleed-through test: measure bleed-through with A slit as usual and A slit completely closed to see whether using B slit would help.
    • Tagger Access:
      • Change HV crate (Nick, Chris)
      • Install helicity fibers and connect to DAQ