Run Planning Meeting Notes, Jan 30-Feb 05, 2020

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Trigger Spreadsheet

Trigger Counter

Wednesday, February 5

  1. Last 24 hours
    • No beam 2:30pm-6:30pm (two vacuum pump failures) [1], [2], [3], [4], [5]
    • HOSS restarted at 6am [6]
    • Production: 3.0B triggers.
  2. Issues
    • No spare turbo pumps left [7]
    • Easy recovery for the frozen gluon05 didn't work and led to hard reboot. [8]
    • Noisy hodoscope channel [9]
    • BTA from 4pm to 6:30pm: is it BANU ur BNA? [10]
  3. Reports
  4. Plans for today
    • Harp scan
    • Production

Tuesday, February 4

  1. Last 24 hours
    • No beam: 11pm - 2:30am (beam tunning)
    • Bad beam: since 5am - unstable and shifted by 3mm at AC (5th path separator issues).
    • 9:30am: The latest harp scan [11]
    • About 3.2B production triggers.
  2. Changes
    • 2pm: Same AMO reference in RootSpy as in cohbream gui [12]
    • 4pm: A change in the data-taking procedure [13]:
      • MCC should insert a dumplette before each no-beam goniometer movement
      • Two production runs in a row for each radiator configuration.
  3. Issues
    • Display dumplette location on goniometer GUI
    • Problems with coherent peak at the start of the swing shift. [14],[15]
    • At 8pm, a number of IOC and DAQ stopped working for about 10 minutes. A network glitch is suspected. [16]
    • Issue with EPICS archiving [17]
  4. Reports
    • Ratio of rates from HOSS [18]
    • More on ratio of rates [19]
    • Drifting beam energy [20]
  5. Plans for today
    • Production, production and more production.

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 [21]).
    • Saturday:
      • Goniometer stopped moving sometime between 5am and 3pm. The problem was only noticed at 3pm [22]. As a result, a few runs have unknown diamond orientation [23],[24]
      • Repair work on goniometer from 4pm till 7:30pm (no beam) [25]
      • At 10pm, lost HV on TAGH 121-127 and beam halo. HV crate T8-1-BOT has died and wouldn't boot. Repairs were postponed until next morning [26], [27]
    • Sunday:
      • Night shift took data with TAGH hole [28]
      • No beam 8:15am-9:15pm (ARC8 magnet overheating)
      • 9:30am-10:30am Controlled tagger access by Nick to repair T8-1-BOT [29]
      • Beni conducted ST counter SiPMT tests [30] and raised TOF HV.
      • Finally, beam came back at 9:15pm.
    • Production
      • In all the chaos over weekend, we managed to collect 7.9B triggers. However, 1.9B events have an unknown diamond orientation, and 1.7B tirggers have beam energy hole.
  2. Changes
    • Change in TPOL readout [31], [32]
    • New DIRC SiPM TDC reference timing [33] - apparently, it's still not in ccdb.
    • New TOF high voltages [34]
  3. Issues
    • TAGM is "immobilized" to keep goniometer moving.
    • TPOL slot 13 channel 3 is always saturated [35]
    • Remote reset cable for T8-1-BOT needs to be repaired.[36]
    • FDC HV channel 2:c4:4p was in constant trip loop and was set to lower HV [37], [38]
    • TOF T:45 20V difference between HV setpoint and readback.
    • Gluon05 needs to be rebooted almost daily.
    • As ususal, new DIRC holes require DAQ reboots.
    • Do we need a dumplette inserted for all goniometer movements? [39]
  4. Noteworthy
    • MCC sees our radiator IN & OUT at the same time [40]
  5. Reports
    • Ratio of rates [41]
    • Vertex plots for empty target [42]
  6. Plans for today
    • Harp scan
    • Production

Friday, January 31

  1. Last 24 hours
    • JD70-106 47um diamond alignment till 4pm [43], [44]
    • Ion chambers had to be masked for alignment [45], [46]
    • Production since 4pm (~3.5B triggers)
  2. Issues
    • JD70-105 keeps degrading [47]
    • Periodic holes in DIRC occupancy [48]. Any way to recover without full DAQ reboot?
    • "Disappeared" DIRC SiPM TDC [49] - its timing recalibration is not done yet
    • Oh yes, Great Battle of the Mouse for 3 hrs :) [50]
  3. Reports
    • More on initial PS enhancement [51]
  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) [52]
    • Alignment of JD70-106 47um diamond (9:30am till 6pm) [53]
    • Production at 350nA (since 6pm). About 2.6B triggers collected.
  2. Issues
    • DIRC N-board lost connectivity for 30 minutes [54]
    • Gamma radiation at the racks [55]
    • Uncoupling of DIRC and FCAL light censors [56],[57]
    • Online monitoring issues [58] and fixed calibrations [59], [60]
  3. Reports
    • Initial PS enhancement Spring 2020 [61]
  4. Plans for today
    • Any more work on diamond alignment?
    • Production