Run Coordination Meetings:Spring2023

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Spring 2023 Run

Run Statistics Google Spreadsheet.

Run tracking/validation

GlueX experiment (January 12 - March 20 2023)

Connect Information

To connect from the outside by phone please do the following

1.) To join via ZoomGov: connect Meeting ID: 160 199 0060 / Passcode 8394

2.) To join via Polycom room system go to the IP Address: ( and enter the meeting ID: 660743227.

3.) To join via phone, use one of the following numbers and the Conference ID: 660743227.

4.) The moderator code is 8394

Dial Either +1 408 740 7256 or +1 888 240 2560 for US or Canada

Specific instructions for connecting from JLab's Hall D conference room:

  • Turn polycon on if necessary (do it before turning the computer on)
  • With the polycon, place a call at
  • Press # to enable the polycom keypad, then enter the meeting id: 660743227 and #
  • You may have to unmute the microphone: #*4
  • Turn the computer on if needed

Meeting General Agenda

Run planning meetings:

Beam and Hall configuration

  • Experiment: GlueX (DIRC included. Possibly with ComCal centered on the beamline).
  • Beam energy expected:
    • 11.55 GeV
  • Solenoid:
    • 1350A
  • CW Beam:
    • 250 MHz frequency.
    • Range: 1 nA-900, with possibility of UP TO 2uA FOR 3 SHIFTS.
    • Chopper slit: TBD (assume C, since Hall C will be at 5-pass all the time)
    • Standard current and radiators
      • ~ 300 nA on a 4.1·10-4 R.L. radiator (50 μm diamond). (RSAD limit 400nA on 58 μm diamond))
      • ~ 300 nA on a 33.7·10-5 R.L. AL radiator (30 µm Al). (RSAD limit 480nA on 30 µm Al radiator))
  • Position Slow Lock on or FFB on (FFB doesn't operate below 50nA).
  • Radiators:
    • Goniometer radiators:
      • Diamond JD70-103 (50 μm - 4.1·10-4 R.L., 7×7 mm²) Used in CPP. We will start with this diamond
      • Diamond JD70-107 (55 μm - 4.6·10-4 R.L., 7×7 mm²) - To be used once JD70-103 becomes deficient. New crystal. (Not expected to be great according to rocking curve.)
      • (Diamond JD70-109 (50 μm - 4.1·10-4 R.L., 7×7 mm²) - New crystal - Not expected to be good according to rocking curve.)
      • (Diamond JD70-105 (47 μm - 3.9·10-4 R.L., 7×7 mm²) - Spent: used for the second part of GlueX's Fall 2018 run and Fall 2019/Spring 2020/Fall 2021)
      • (Diamond JD70-106 (50 μm - 4.1·10-4 R.L., 7×7 mm²) - Aligned and used shortly during Tagger Accidental test in Spring 2020. Did not display sharp coherent peak.)
      • Amorphous 40 μm Al radiator (44.9·10-5 R.L.)
      • Amorphous 1.86·10-5 R.L., (for TAC run).
    • Amorphous
      • 1.64 µm Al (1.86·10-5 R.L., see study)
      • 10 µm Al (11.2·10-5 R.L.)
      • 30 µm Al (33.7·10-5 R.L.)
  • Tagger quadrupole on (-4.2 A).
  • Collimator hole: Default running: 5.0 mm.
  • PS converter: 75 μm
  • Miscellaneous:
    • PS test area (tests will be performed in parallel with GlueX data taking):
      • tests of FCAL2 modules and calorimeter prototypes (A. Somov and Zisis for BCAL prototype )
    • CCAL: test calorimeter modules and electronics (A. Somov)
    • X-ray W shield test

General Information

This document describes the run plan for the Hall D Spring 2023 run.

  1. January 5th -12th: Electron beam restoration.
  2. January 12th - March 20th: 10 weeks for GlueX high luminosity production. This assumes that the microscope reconfiguration -initially scheduled to be done by the 16th according to the former run schedule- is ready by the 12th. If not, and if there are breaks in the microscope installation (e.g. at night), we may close the Tagger Hall to allow OPS to tune the beam for Hall D.
  • Accelerator overall plan and priorities: Deliver physics beam to 4 halls
    • Hall A, always at 4-pass, is scheduled stop early, on March. 13th.
    • Halls B and or C will always be at 5-pass
  • Hall D plan
    • Experiment: GlueX-II E12-12-002
    • One (?) TAC run.
    • Two empty target runs (One at the start of the run, the other consecutive to TAC run)
    • Straight track run: Tentatively at the end of the run period, sooner if the opportunity arises.
      • Overall, one night of good data.
    • x-ray W shield tests (Justin/Lubomir).
    • Opportunistic tests: tests of FCAL2 modules and calorimeter prototypes (A. Somov and Zisis for BCAL prototype ).
  • Expected Staffing and responsibilities:
    • The Run Coordinator oversees the run:
      • January 12 - 18, 6 days: Joerg Reinhold
      • January 18 - 27, 7 days: Alexandre Deur
      • January 27 - Feb. 1st, 7 days: Edmundo Barriga
      • Feb. 1st - 8th: 7 days: Hovanes Egiyan
      • Feb. 8th - 15th: 7 days: Igal Jaegle
      • Feb. 15th - 22nd: 7 days: Keigo Mizutani
      • Feb. 22nd - March 1st: 7 days: Simon Taylor
      • March 1st - March 8th: 7 days: Tolga Erbora
      • March 8th - March 15th: 7 days: Churamani Paudel
      • March 15th - March 20th: 5 days: Richard Jones
    • The Physics Division Liaison (PDL) and Hall D Work Coordinator/Safety Warden (S. Spiegel) verify that the proper safety rules are followed. PDL is:
      • PDL: Lubomir Penchev
    • The analysis coordinator (Alexander Austregesilo) oversees the off-line diagnostic of the different systems and analysis of the data.
    • Shifts: 2 person shifts: 1 local leader and 1 (optionally remote) worker scheduled through the GlueX shift scheduler.
  • Coordination Activities:
    • The RC will attend the MCC meetings at 7:45am and 8:00am and the weekly MCC meeting (Wednesday, 1:30pm). The PDL will attend the weekly MCC meeting.
    • Run meetings: broadcasted on Zoom. 8:45am in the counting house conference room. The Run Coordinator will be responsible for organizing and chairing the meeting.


  1. Make sure all radiators (from goni and amorphous ladder) are retracted. ACol in blocking position. Profiler retracted. Check that magnets are at their nominal fields.
  2. Verify electron beam quality and establish photon beam (assume 1 day).
    • Changed plan: MCC wants to do harp scans first; we might redo them later if they continue tuning after that.
    • Ion Chambers trip threshold must be set using the 4 Al. radiators (1 on goni, 3 on amorphous radiator ladder) Wait with diamond until after alignment
    • Hall D BCM calibration: Check with MCC whether a BLA calibration was done. If not, one should be done.
    • Tune electron beam with radiator retracted
      • Radiator (amorphous and diamond) must be retracted. Collimator should be in blocking position.
        • Typical levels are (for radiator retracted, collimator fully blocking, electron beam current 50 nA)
          • RAD102_P1 ~ 10 mrad/hr (tagger area, gammas, between tagger and dump)
          • RAD102_P2 ~30 mrad/hr (tagger area, gammas, on the ground below the goniometer).
          • RAD102_P3 ~ 0.3 mrem/hr (tagger area, neutrons, near electronics racks)
          • RAD508_P1 < 0.1 mrad/hr (collimator cave, gammas).
          • RAD508_P2 ~ 0. mrad/hr (Hall. Neutrons).
    • Establish good photon beam
    • Make sure tagger quadrupole is on and at -4.2 A. (It can be turned on only once the Hall is in power/beam permit.)
      • Insert 2*10-5 RL radiator. Call MCC and ask to mask the FSD and turn off beam each time a radiator is moved
        • Typical levels are (for 2×10-5 radiator, electron beam current 50 nA)
          • RAD102_P1= 35 mrad/hr (tagger area, gammas, between tagger and dump)
          • RAD102_P2= ~ 50 mrad/hr (tagger area, gammas, on the ground below the goniometer)
          • RAD102_P3= ~2 mrem/hr (tagger area, neutrons, near electronics racks)
          • RAD508_P1= ~10 mrad/hr (collimator cave, gammas).
          • RAD508_P2 < ~ 0. mrad/hr (Hall. Neutrons).
    • Verify beam position and envelope (Hovanes).
      • Ask MCC to set beam position on 5C11b to x=-0.5 mm and y=+1.0 mm.
      • Ask MCC for 5C11 and 5C11B HARP. Then do our radiator HARP scan, see instruction. If it looks good, proceed to next step. Otherwise, inform MCC. looked good
      • Insert profiler (no need for masking FSD when an object is inserted in the photon line), run with 1×10-4 radiator and 50 nA. Beam on the profiler should be at x=0.0±0.5cm; y=0.0±0.5cm. If not, inform MCC. Keep monitoring this position; produce a strip chart and log it.
    • Radiation level study (1h):V
      if you feel up to the task, strip chart the five radiation monitors (see above) and log them.
      • Run 5 min without radiator (Call MCC and ask to mask the FSD each time the radiator is moved). Beam current: 50nA. Repeat at 100 nA and 200 nA. There is no need to run the DAQ or stop the beam between each steps: the data are recorded by EPICS. However, the beam need to be off when moving to a different radiator for the next steps.
      • Run 5 min with the 10-4 radiator (Call MCC). Beam current: 50nA. Repeat at 100 nA and 200 nA
      • Run 3 min with the 3*10-4 radiator (Call MCC). Beam current: 50nA. Repeat at 100 nA and 200 nA
    • Inform Richard Jones that we are getting ready to use the Active Collimator, and ask him if he needs to check the Active Collimator with the beam. ask richard whether profiler in or out
    • Photon flux optimization and Active Collimator calibration. (1h). V
      Call Hovanes. will postpone to duirng day time (Requires confirmation from Richard about using the Active Collimator, see step above). the following steps will be done by Hovanes; solenoid should be on to protect FDC & CDC b/c collimator will be moved to 5 mm hole
      • re-Insert the 10-4 radiator (Call MCC). Use about 100 nA beam current. This will provide the Act. Col. nominal positions for its high gain values.
      • Determine maximum photon beam transmission by doing 2D scans using the collimator x/y motions (Hovanes. 1h)
      • Repeat procedure with 2*10-5 radiator (Call MCC) and 50 nA beam current. This will provide the Act. Col. nominal positions for its low gain values.
      • Record on the white board what is the beam position on 5C11b and Active Collimator for optimal photon transmission, both for low and high Act. Col. gain.
      • Until Hovanes determines to optimal 5C11b and Active Collimator position, keep profiler in and beam locked (MCC's duty) on the nominal 5C11b and x=0,y=0 profiler position. Once Active Collimator nominal beam position is known, retract profiler and lock the beam (MCC) on the active collimator.
  3. Detector and beamline checkout. V
    • microscope alignment with motor. During this, beam needs to be relatively well centered on collimator (R. Jones/(Hovanes is needed for this)) V
    • Any time before starting production (beam quality is not important, but see previous step above): microscope HV scan (2h, R. Jones) V
    • Reestablish L1 trigger (Alex. Somov. 2h). V
    • PS and TAGH HV scan. (Alex. Somov. 1h). V
    • Reestablish DAQ (Sergei, 2h). V
  4. General detector calibration + HV scans (Sean Dobbs & Simon/Torri 6h [Simon's phone number in the counting room list. For Sean and Torri, they are commented out: edit this page to access them. Use 4.5×10-4 Al. radiator (on goni). This procedure will go for the first time to 350 nA.]
  5. Diamond JD70-103 alignment check (2 directions already aligned for CPP). (Hovanes. 8h). V
  6. Inform MCC that they can run their procedure to set the Ion Chambers trip threshold on diamond JD70-103 .
  7. GlueX-II production Ongoing
    • Standard configuration: JD70-103 diamond, 300 nA, 5 mm hole, TPol on 75 μm TPol convertor. 2h runs and no more, as it may be hard to correct for calibration drifts. Cycle over 9 sets of runs: 2 runs 0o, then 2 runs 90o, then 2 runs 45o, then 2 runs 135o, then 1 amorphous (goniometer) run.
      • Amorphous runs: 4.5×10-4 Al. radiator (on goni). 300nA. Use the amo run to rejuvenate the amo reference in CBREM GUI, every cycle.
    • Do not attempt to save time by pre-starting the run and wait for beam to return. See why here
    • Log in run information in the shift summary (make a run list). For each production run, log useful comments on DAQ comment window, see [1]
    • Tagger quadrupole on
    • Harp scan (30 min): Every 2 days, or after significant beam interruptions requiring beam retuning, or beam down for >24h.
    • Two Empty target run (2h: 1- h to empty/fill back the target, 1h running). Standard production current. To be done after TAC run, beam study or RF recovery.
  8. High-intensity program (Goal: study running scenarios up to 1 uA beam current)
    • Short intensity scans from 300 nA - 1 uA for ~1/2 shift, soon after production is established
      • Observe drift chamber currents and scaler rates and record EPICs data
      • Detector requirements: TOF, TAGH and DIRC HV off, current limits for CDC and FDC provided by Naomi and Lubomir
      • Scan of molybdenum, tin, tungsten and lead foil absorber downstream of the collimator. Requires several accesses and RadCon escort to install and/or remove the additional plates in the collimator cave.
    • After appropriate lower drift chamber voltages and beam currents are determined and any additional foil absorbers to be used
      • 2 shifts of production running with full detector to measure yields of rho/omega
      • Production data with currents ranging from 250 nA - 1 uA using prescaled FCAL-BCAL trigger
      • Production data with higher FCAL-BCAL thresholds to remove prescale and find any other bottlenecks for running with 1 uA
  9. One "TAC" run (use CCAL as TAC). Nominally in the middle or end of the run period, unless a good opportunity arises (e.g. Hall A and C not running for at least 8h).
  10. Two empty target runs (One at the start of the run, the other consecutive to TAC run). Simon.
  11. Straight track run (Lubomir): Tentatively at the end of the run period, sooner if the opportunity arises.
    • Overall, one night of good data.
  12. Long mode 10 min run. Once a week (20 min).
  13. Amorphous run. Every set of 4 diam. orientation runs. 1h Standard production current. Time to switch from pol. to unpol.: 10min. time to switch from unpol. to pol.: 30min.

Hall D situation room (current run plan)

Hall D counting room white board

Accelerator status

Hot Checkout

To be completed by Jan. 10th?? (Unlikely that the microscope and polarimeter will be ready by then)

85% ready ; 3% checked ; 12% not ready

Readiness for Spring 2023 run

(This section is commented out for clarity)

Live Camera Feeds from the Four Counting Houses

  1. These feeds SHOULD be open and visible at all times from one of the monitors in each of the counting houses. (currently this is not working; we should post instructions how to establish this connection. J.R.)
  2. Management cautions AGAINST opening them from other locations or offsite, out of concern for available bandwidth.

Running Shifts Remote