Difference between revisions of "Run Planning Meeting Notes, Jan 30-Feb 05, 2020"

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#* New TOF high voltages [https://logbooks.jlab.org/entry/3776060]
 
#* New TOF high voltages [https://logbooks.jlab.org/entry/3776060]
 
# Issues
 
# Issues
 +
#* TAGM is "immobilized" to keep goniometer moving.
 
#* TPOL slot 13 channel 3 is always saturated [https://logbooks.jlab.org/entry/3775221]
 
#* TPOL slot 13 channel 3 is always saturated [https://logbooks.jlab.org/entry/3775221]
#* Remote reset cable for T8-1-BOT needs to be repaired.
+
#* Remote reset cable for T8-1-BOT needs to be repaired.https://logbooks.jlab.org/entry/3776343
#* FDC HV channel 2:c4:4p was in constant trip loop and was turned off [https://logbooks.jlab.org/entry/3776221]
+
#* FDC HV channel 2:c4:4p was in constant trip loop and was set to lower HV [https://logbooks.jlab.org/entry/3776221], [https://logbooks.jlab.org/entry/3776343]
 
#* TOF T:45 20V difference between HV setpoint and readback.
 
#* TOF T:45 20V difference between HV setpoint and readback.
 +
#* Gluon05 needs to be rebooted almost daily.
 
#* Do we need a dumplette inserted for all goniometer movements? [https://logbooks.jlab.org/entry/3775551]
 
#* Do we need a dumplette inserted for all goniometer movements? [https://logbooks.jlab.org/entry/3775551]
 
# Noteworthy
 
# Noteworthy

Revision as of 07:29, 3 February 2020

Trigger Spreadsheet

Trigger Counter

Wednesday, February 5

  1. Last 24 hours
  2. Issues
  3. Reports
  4. Plans for today

Tuesday, February 4

  1. Last 24 hours
  2. Issues
  3. Reports
  4. Plans for today

Monday, February 3

  1. Last 72 hours
    • Friday:
      • No beam 10am-12pm (BLA calibration). Opportunistic Hall access.
      • No beam 3pm-4pm (MCC software update).
      • No beam 4pm-11pm (lost vacuum in Hall C transport [1]).
    • Saturday:
      • Goniometer stopped moving sometime between 5am and 3pm. The problem was only noticed at 3pm [2]. As a result, a few runs have unknown diamond orientation [3],[4]
      • Repair work on goniometer from 4pm till 7:30pm (no beam) [5]
      • At 10pm, lost HV on TAGH 121-127 and beam halo. HV crate T8-1-BOT has died and wouldn't boot. Repair postponed until next morning [6], [7]
    • Sunday:
      • Night shift takes data with TAGH hole [8]
      • No beam 8:15am-9:15pm (ARC8 magnet overheating)
      • 9:30am-10:30am Controlled tagger access by Nick to repair T8-1-BOT [9]
      • Beni conducts ST counter SiPMT tests [10]
      • Finally, beam is back at 9:15pm.
    • Production
      • In all the chaos over weekend, we managed to collect 6.5B triggers. However, 1.9B events have an unknown diamond orientation, and 1.7B tirgger have beam energy hole.
  2. Changes
    • Change in TPOL readout [11], [12]
    • New DIRC SiPM TDC reference timing [13] - apparently, it's still not in ccdb.
    • New TOF high voltages [14]
  3. Issues
    • TAGM is "immobilized" to keep goniometer moving.
    • TPOL slot 13 channel 3 is always saturated [15]
    • Remote reset cable for T8-1-BOT needs to be repaired.https://logbooks.jlab.org/entry/3776343
    • FDC HV channel 2:c4:4p was in constant trip loop and was set to lower HV [16], [17]
    • TOF T:45 20V difference between HV setpoint and readback.
    • Gluon05 needs to be rebooted almost daily.
    • Do we need a dumplette inserted for all goniometer movements? [18]
  4. Noteworthy
    • MCC sees our radiator IN & OUT at the same time [19]
  5. Reports
    • Ratio of rates [20]
    • Vertex plots for empty target [21]
  6. Plans for today
    • Harp scan
    • Production

Friday, January 31

  1. Last 24 hours
    • JD70-106 47um diamond alignment till 4pm [22], [23]
    • Ion chambers had to be masked for alignment [24], [25]
    • Production since 4pm (~3.5B triggers)
  2. Issues
    • JD70-105 keeps degrading [26]
    • Periodic holes in DIRC occupancy [27]. Any way to recover without full DAQ reboot?
    • "Disappeared" DIRC SiPM TDC [28] - its timing recalibration is not done yet
    • Oh yes, Great Battle of the Mouse for 3 hrs :) [29]
  3. Reports
    • More on initial PS enhancement [30]
  4. Plans for today
    • We may (or may not) have ~30min for access at 10am
    • Production

Thursday, January 30

  1. Last 24 hours
    • Harp scan (~9am) [31]
    • Alignment of JD70-106 47um diamond (9:30am till 6pm) [32]
    • Production at 350nA (since 6pm). About 2.6B triggers collected.
  2. Issues
    • DIRC N-board lost connectivity for 30 minutes [33]
    • Gamma radiation at the racks [34]
    • Uncoupling of DIRC and FCAL light censors [35],[36]
    • Online monitoring issues [37] and fixed calibrations [38], [39]
  3. Reports
    • Initial PS enhancement Spring 2020 [40]
  4. Plans for today
    • Any more work on diamond alignment?
    • Production