Difference between revisions of "RGM RC Meeting Dec1 Dec7"

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== Tuesday, December 7, 2021 ==
 +
* Last 24 hours
 +
** Completed change to Ca-48 target
 +
** Evening work to re-establish beam
 +
*** Delays due to accelerator.
 +
*** Centering the beam on the target
 +
*** Luminosity scan
 +
*** Beam-blocker transmission calibration
 +
** At 2:30 AM, began production at 80 nA
 +
** 12:30 PM, began low-luminosity run, to finish around 16:30 PM
 +
* Issues
 +
** Any update on writing to tape?
 +
*** We are still using DAQ config to PROD67_noVTPread
 +
** 2H01 Vacuum is reading 10^-2
 +
*** Persistent alarm state
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*** Since upstream and downstream vacuum read 10^-6, this is likely a faulty gauge.
 +
*** Unless the accelerator has major unplanned down-time, we'll replace this gauge during Friday access.
 +
* Upcoming Plan
 +
** Run production at 80 nA until Friday
 +
** Friday full day of restricted access to switch to Ca-40 target
 +
*** Use this opportunity to replace 2H01 vacuum gauge.
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* Analysis
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** 2.0 GeV vs. 1.6 GeV for BAND calibrations
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 +
 +
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== Monday, December 6, 2021 ==
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* Last 24 hours
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** Production running on Sn target
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*** Established 90 nA for production, limited by region 3 DC current and occupancy  [https://logbooks.jlab.org/entry/3956825]
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*** Gas alarm on FMT caused HV to shut down. [https://logbooks.jlab.org/entry/3956842] This wasn't noticed until 11 PM, i.e., runs 15320 to 15324 are missing the FMT.
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*** Overnight BOM trips caused frequent FSD [https://logbooks.jlab.org/entry/3957194]
 +
*** At 5 AM, a DAQ crate power supply needed to be replaced, by rapid access (thank you Sergey!)
 +
** This morning began switching to Ca-48 target
 +
*** Went to restricted access at 7:30 AM
 +
*** Work is still underway
 +
*** Dan updated FTOF HV Settings
 +
*** BOM repairs are complete
 +
* Issues
 +
** DAQ
 +
** DC Occupancies
 +
** SVT / MVT / BMT Occupancies
 +
** Writing to tape
 +
*** Switched to DAQ config to PROD67_noVTPread
 +
* Upcoming Plan
 +
** This evening, we will begin production on Ca-48
 +
*** Re-establish beam, retune 2H01
 +
*** Luminosity scan to establish production current
 +
*** Any other calibrations?
 +
* Analysis
 +
** 2.0 GeV vs. 1.6 GeV for BAND calibrations
 +
 
== Friday, December 3, 2021 ==
 
== Friday, December 3, 2021 ==
 
* Last 24 hours
 
* Last 24 hours

Latest revision as of 13:18, 7 December 2021

Tuesday, December 7, 2021

  • Last 24 hours
    • Completed change to Ca-48 target
    • Evening work to re-establish beam
      • Delays due to accelerator.
      • Centering the beam on the target
      • Luminosity scan
      • Beam-blocker transmission calibration
    • At 2:30 AM, began production at 80 nA
    • 12:30 PM, began low-luminosity run, to finish around 16:30 PM
  • Issues
    • Any update on writing to tape?
      • We are still using DAQ config to PROD67_noVTPread
    • 2H01 Vacuum is reading 10^-2
      • Persistent alarm state
      • Since upstream and downstream vacuum read 10^-6, this is likely a faulty gauge.
      • Unless the accelerator has major unplanned down-time, we'll replace this gauge during Friday access.
  • Upcoming Plan
    • Run production at 80 nA until Friday
    • Friday full day of restricted access to switch to Ca-40 target
      • Use this opportunity to replace 2H01 vacuum gauge.
  • Analysis
    • 2.0 GeV vs. 1.6 GeV for BAND calibrations


Monday, December 6, 2021

  • Last 24 hours
    • Production running on Sn target
      • Established 90 nA for production, limited by region 3 DC current and occupancy [1]
      • Gas alarm on FMT caused HV to shut down. [2] This wasn't noticed until 11 PM, i.e., runs 15320 to 15324 are missing the FMT.
      • Overnight BOM trips caused frequent FSD [3]
      • At 5 AM, a DAQ crate power supply needed to be replaced, by rapid access (thank you Sergey!)
    • This morning began switching to Ca-48 target
      • Went to restricted access at 7:30 AM
      • Work is still underway
      • Dan updated FTOF HV Settings
      • BOM repairs are complete
  • Issues
    • DAQ
    • DC Occupancies
    • SVT / MVT / BMT Occupancies
    • Writing to tape
      • Switched to DAQ config to PROD67_noVTPread
  • Upcoming Plan
    • This evening, we will begin production on Ca-48
      • Re-establish beam, retune 2H01
      • Luminosity scan to establish production current
      • Any other calibrations?
  • Analysis
    • 2.0 GeV vs. 1.6 GeV for BAND calibrations

Friday, December 3, 2021

  • Last 24 hours
    • Mostly good beam, production running on C
    • Orbit Lock changed to 2H01 yesterday at 3PM
    • Low current run (20 nA), Run 15285, yesterday evening
    • Resumed 90 nA production running on C at the end of Swing
    • More DAQ issues resurfaced over night
      • Led to many short runs, which DO have good data and should be analyzed
  • Issues
    • More DAQ trouble
      • Sergey switched the DAQ configuration to PROD66_noVTPread
    • Torus cryo alarm at 9:45 PM
  • Upcoming Plan
    • Sunday, 12/5, 8AM, Switch from C to Sn
      • This time works for Eugene.
      • Eugene's help will be needed to recenter the beam on target
    • Monday, 12/6, Switch from Sn to Ca
      • Hall will go to restricted access from approx 7:30 AM to 5PM for target change work.
      • Denny is coordinating with MCC / RadCon to support this access.
    • Weekend meetings
      • RC/PD meetings scheduled for 9AM over the weekend on the usual BJ.
      • No daily RC Meeting over the weekend, but I will send an RC e-mail update.
      • Are analysis meetings needed?
  • Analysis Meeting to Follow

Thursday, December 2, 2021

  • Last 24 hours
    • RF Recovery Day
    • 20:30 Began restablishing beam to the Hall
    • 10:45 Resumed production Running
    • Overnight DAQ issues
    • 04:00 - 08:00 Beam down due to blown fuse (Logbook entry)
    • More DAQ Issues in the morning
    • 11:10 Stable running again
  • Updated monitoring reference run to 15283 (from today)
  • DAQ Issues
  • MVT Trips Example
  • Question of DC Sector 1 Occupancies before Wednesday
  • Short-term plan
    • As of yesterday, plan was to switch to Sn on Friday afternoon, Ca on Monday.
      • Denny Insley plans to call for restricted access at 7:30 AM (Mon. 12/6), with goal to start work by 8:15 AM, finish by around the end of the day shift.
    • Any changes to this plan?
    • Any calibrations still needed on C (low current runs, etc.)?
  • Analysis Meeting to follow

Wednesday, December 1, 2021

  • RC Change-over
  • Re-establishing beam this afternoon/evening
  • Short-term run plan
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