Run Coordination Meetings:Summer Fall2022

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Summer / Fall 2022 Run

PrimEx experiment

Meeting General Agenda

Run planning meetings:

Run Planning Meeting Notes, August 18 - August 23, 2022

Connect Information

To connect from the outside by phone please do the following

1.) To join via a Web Browser, go to the page [1]

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

Beam and Hall configuration

  • Beam energy expected:
    • 11.57 GeV
  • Solenoid:
    • 1350 A
  • CW Beam:
    • 250 MHz frequency
    • 50 - 200 nA (production runs), 400 nA maximum (rate scans), < 5 nA during calibration runs
  • Radiators:
    • Goniometer radiators:
    • Amorphous:
      • 10 µm Al (11.2·10-5 R.L.)
      • 1.64 µm Al (1.86·10-5 R.L.) calibration
  • Tagger quadrupole on (-4.2 A).
  • Collimator hole: Default running: 5.0 mm.
  • Targets:
    • 4He target: cryogenic target
    • Be target
  • PS converter: 750 μm
  • Miscellaneous:
    • PS test area:
      • Right arm: Setup to check PbWO4 crystals and calorimeter modules / prototypes

General Information

This document describes the run plan for the Hall D Summer 2021 run.

  • Schedule for the run:
  1. August 18 - August 26 (change detector configuration from CPP to PrimEx)
  2. August 27: beam restoration
  3. November 29: end of the run
  • Accelerator overall plan and priorities:
  • Hall D plan
    • Experiment:
    • PrimEx
    • 2 TAC Runs
    • Empty Target Runs
  • Expected Staffing and responsibilities:
    • The Run Coordinator oversees the run:
      • August 18 - August 23: 14 days: Liping Gan (detector configuration change)
      • August 24 - August 30: 14 days: Igal Jaegle (detector configuration, accelerator restoration)
      • August 31 - September 6: Stuart Fegan
      • September 7 - September 13: TDB
      • September 14 - September 20: Arshak Asaturyan
      • September 21 - September 27: TBD
      • September 28 - October 4: TBD
      • October 5 - October 11: Joerg Reinhold
      • October 12 - October 18: TBD
      • October 19 - October 25: Arshak Asaturyan
      • October 26 - November 1: Igal Jaegle
      • November 2 - November 8: Olga Cortes Becerra
      • November 9 - November 15: Mariana Khachatryan
      • November 16 - November 22: TDB
      • November 23 - November 29: TDB
        • (Last day of Primex running November 29 16)
    • The Physics Division Liaison (PDL) and Hall D Work Coordinator/Safety Warden (M. Stevens) 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 Bluejeans. 8:45am in the counting house conference room. The Run Coordinator will be responsible for organizing and chairing the meeting.
      • Start of run: Daily meetings
      • Production: Alternate nominal length meetings (Monday/Thursday) with short meetings (Tuesday, Wednesday, Friday)


Run Plan, Summer / Fall 2022

Hall D situation room (current run plan)

Short Term Run Plan
Hall D counting room white board camera

Runplan time charts

Summer 2021 time charts:

Accelerator status

Setting Up Photon Beam

  1. Verify electron beam quality and establish photon beam
    • Ion Chambers trip threshold must be set using 3 Al. radiators on the amorphous radiator ladder
    • 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.
      • Insert profiler (no need for masking FSD when an object is inserted in the photon line), run with 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.
    • Radiation level study (1h, collimator at 5mm):
      • 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 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
    • Photon flux optimization and Active Collimator calibration. Call Hovanes.
      • 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.

Hot Checkout

To be completed by XXX.

100% ready ; 0% checked ; 0% not ready

Readiness for Summer 2021 Run

  • Solenoid (Eugene/Beni)

Start the run with magnetic field on

  • Surveys (Tim/Mark)
    • FCAL survey
    • TOF syrvey
    • Survey beamline component (secondary collimator, etc.) Done except the pipe between the PS and target
    • Survey CCAL after it's installed in the Hall
  • DAQ (Sergei).
    • Include CDC1, ST, and CCAL crates to the readout. Power the detector, continue taking cosmic data during the detector configuration change.
  • Trigger (Alex S.)
    • Check physics triggers
    • Run CCAL trigger when the detector is installed in the Hall
    • Connect / check CCAL LED and alpha triggers
  • Beam line
    • Install He beam pipe between FCAL and CCAL (Tim)
    • Install led shielding wall in front downstream the PS (Tim)
    • Radiator status
      • Check amorphous radiator
    • Tagger hodoscope (A. Somov)
      • Install plates with TAGH counters
      • Install / check repaired TAGH countes
    • Tagger microscope (Richard Jones)
      • Move TAGM to the new location
    • Collimator Motion (Hovanes)
      • Not changed
    • Active collimator detectors(Richard Jones/Alexandre Deur)
      • Move active collimator to 5 mm hole
    • Profiler (Hovanes)
      • Not changed
    • Luminosity monitor (Hovanes)
      • Not changed
    • Halo monitors
      • Not changed
    • PS system (Alex Somov)
      • Not changed
    • Beam line magnets (PS magnet sweeping magnet and tagger quads).
      • Change filed of the PS magnet
    • Polarimeter (Sebastian Cole/M. Dugger)
      • Optional, not used in PrimEx
    • Targets (Chris/Tim/Alexandre D.)
      • LH4
      • Be
    • TAC (Hovanes/Alex Somov)
      • Use CCAL (TAC can be used as a backup)
    • Slow control (Hovanes)
      • Check CCAL
    • RF (Sergei)
      • Not changed
    • Radiation monitors (Alexandre D.)
      • Not changed
  • Detector systems
    • ST (Beni)
      • Connect cables, chack dark rate data
    • FDC (Lubomir)
      • Not changed
    • CDC (Beni)
      • Not changed
    • BCal (Mark D. / Elton)
      • Not changed
    • FCal (Mark D.)
      • Check / replace bases if needed
    • ComCal (Alex Somov)
      • Install CCAL platform
      • Check platform motion
      • Installed detector on the platform
      • Connect cables
      • Check detector controls
      • Connect LMS
      • Check detector
    • TOF (Beni)
      • Not changed
  • RSAD and ESAD Safety documents, to be updated (Lubomir):
    • RSAD
    • ESAD
    • COO
    • ERG
    • Documents approved and ready for shift takers to sign.
  • Phones
    • System experts should have found their on-call phones by now.
    • System experts should have their phone charged.
    • System experts should start carrying their (charged) phone.
  • Hall Status/safety (Mark/Tim)
  • Other topics?

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.
  2. Management cautions AGAINST opening them from other locations or offsite, out of concern for available bandwidth.

Running Shifts Remote