Run Coordination Meetings:Spring2025

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Spring 2025 Run

Google Spreadsheet.


GlueX experiment (January 24 - July 20 2025)


Connect Information

To connect, please see the information on the GlueX meeting wikipage


Meeting General Agenda

Run planning meetings:


Beam and Hall configuration

  • Commissioning of ECal.
    • Other task that can be done if there are pauses in the ECal commissioning
      • Diamond alignment (Hovanes)
      • ...
  • Commissioning of FCal.
  • Experiment: GlueX-II/JEF.
  • Beam energy expected:
    • 12 GeV
  • Beam polarization expected:
    • from 5% to 73%, depending on other passes of the other Halls . No expectation of decent polarization before March 19th. Then 73% for the rest run.
  • Solenoid:
    • 1350A
  • CW Beam:
    • 250 MHz frequency.
    • Range: 1na-1000 nA.
    • Chopper slit: TBD
    • 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 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: Start with JD70-107. Next, JD70-109. JD70-103 may still be usable if needed. TBD: Install one of the thick 80μm new diamonds, to be available for opportunistic tests.
      • Diamond JD70-107 (55 μm - 4.6·10-4 R.L., 7×7 mm²) 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 JD70-103 (50 μm - 4.1·10-4 R.L., 7×7 mm²) Used in CPP. Partly spent.
      • (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.)
      • (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)
      • 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.
  • TPol converter: 75 μm
  • Miscellaneous:
    • PS test area. Tests must be fully opportunistic,without interfering with ECal commissioning and GlueX data taking. No more than 3 persons involved in such tests should be in the Hall during a control access:

General Information

This document describes the run plan for the Hall D Spring 2025 run.

  1. January TBD: Electron beam restoration.
  2. January 24th - July 20th: 26 weeks for upgraded ECal commissioning and GlueX-II/JEF. As of 11/20/24, one or two weeks shift is expected ⇒ January 31st - July 27th:
  • Accelerator overall plan and priorities: Deliver physics beam to 4 halls
  • Hall D plan summary:
    • Beam and detector check-out: 50 - 300 nA. ~ a day.
      • Commission new beam profiler from Regina (Hovanes).
    • Commission of ECal (~ a month. 150 nA)
      • Opportunistic tests during possible pauses of ECAL Commissioning:
        • Diamond alignment (Hovanes, see below)
        • CDC HV scans (Beni, Naomi). Need compatible trigger
        • ToF HV scans (Beni). Need compatible trigger
        • Lead glass HV scans (Malte). Need compatible trigger
        • Study thick 80μm new diamond (Richard).
        • Others?
    • Commissioning of FCal (In parallel with ECal. Needs a commissioning plan.)
    • Diamond alignment: Stable beam (no frequent trip) 20 nA without FSD for 2-3 shifts.
    • Experiment: GlueX-II/JEF E12-12-002
    • 2 TAC runs. ~nA or less. The bleedthrough should be small compare to it. 1 run just after ECAL Commissioning. Another near the end of the run.
      • Ideally, TAC run should be done with the other Halls off.
      • If not possible, the next best option is to have both A and C not at 5 passes, so that magnetic extraction is performed (less bleedthrough than with RF separation).
        • Either Hall A or C or both are at 5 passes during the whole run ⇒ we will have to watch for opportunity when the Hall at 5 passes is down.
    • High luminosity runs: up to 1 week at 650nA, and up to 1 day at 1 uA.
    • 2 empty target runs (300 nA). 1 run at the start of GlueX-II data taking. Another near the end of the run.
    • Straight track run: 2 shifts (50% efficiency: one shift of good data) (50 nA on 10-4 R.L. radiator).
    • Opportunistic tests:
      • GEM-TRD test during ECAL Commissioning Positioned 3 to 6 o'clock in front of forward detectors, looking downstream.
  • Expected Staffing and responsibilities:
    • The Run Coordinator oversees the run:
      • Jan. ?? - ??, ?? days (beam restoration): Alexandre Deur
      • Jan. 24 - 29, 6 days: Alexandre Deur
      • Jan. 29 - Feb. 5, 1 week: Igal Jaegle
      • Feb. 5-12, 1 week: Simon Taylor
      • Feb. 12-19, 1 week: Edmundo Barriga
      • Feb. 19-26, 1 week: Colin Gleason
      • Feb. 26-March 5, 1 week: Igal Jaegle
      • March 5-12, 1 week: Simon Taylor
      • March 12-19, 1 week: Mike McCaughan
      • March 19-26, 1 week: Drew Smith
      • March 26-Apr. 2, 1 week: Naomi Jarvis
      • Apr. 2-9, 1 week: Boris Grube
      • Apr. 9-16, 1 week: Mark Dalton
      • Apr. 16-23, 1 week: Hao Li
      • Apr. 23-30, 1 week: Mike McCaughan
      • Apr. 30-May 7, 1 week: Alexandre Deur
      • May 7-14, 1 week: Richard Jones
      • May 14-21, 1 week: Justin Stevens
      • May 21-28, 1 week: Boris Grube
      • May 28-June 4, 1 week: Amy Schertz
      • June 4-11, 1 week: Edmundo Barriga
      • June 11-18, 1 week: Naomi Jarvis
      • June 18-25, 1 week: Drew Smith
      • June 25-July 2, 1 week: Hao Li
      • July 2-9, 1 week: Susan Schandmand
      • July 9-16, 1 week: Susan Schandmand
      • July 16-23, 1 week: Mark Dalton
      • July 23-30, 1 week: Alexandre Deur
    • 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: B.Zihlmann
    • The analysis coordinator (Alexander Austregesilo) oversees the off-line diagnostic of the different systems and analysis of the data.
    • Shifts: 2 person shifts: 1 leader and 1 worker, both on-site, 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.

Runplan

Hall D situation room (current run plan)

Hall D counting room white board


Accelerator status

Hot Checkout

To be completed by TBD

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

Readiness for Spring 2025 run

  • Solenoid (Tim/Eugene/Beni/Scott):
    • Solenoid is cold, full with LHe and tested to 825A. Check-out in progress.
  • Surveys (Tim/Scott)
    • Surveys yet to be finalized or TBD:
      • ToF done
      • May need to redo the goniometer survey if we install a 80 μm diamond.
      • PS may need to be redone.
      • DIRC
      • Beam pipe
      • GEM
      • Luminosity monitor
      • Target
  • DAQ (Sergei).
    • DAQ is tested and working.
  • Trigger (Alex Somov).
  • Beam line
    • Diamond status (Tim/Hovanes).
      • Install one of the thick 80μm new diamonds.
      • Remove spent diamond JD70-105 for anneal tests at U.Conn. Richard needs to glue it to its holders. Need to have it before mid-January. From Richards, this timeline should be fine.
      • Putting new diamond and/or removing mounted diamond ⇒ re-surveying the goniometer. (Presumably, after mid-January.)
    • Tagger magnet
      • Ready and NMR is working.
    • Tagger hodoscope (A. Somov).
      • TBD
    • Tagger microscope (R. Jones/Igal).
      • TBD
    • Goniometer (Hovanes).
      • Removed from beamline and reinstalled ⇒ all diamond alignments will need to be redone.
    • Collimator Motion (Hovanes).
      • tested and working
    • Active collimator detectors(Richard)
    • Profiler (Hovanes)
      • New profiler (Regina): All tests are fine and surveyed, but will need to be checked with beam.
    • Luminosity monitor (=Active Target) (Hovanes).
    • Halo monitors (Hovanes)
    • Pair Spectrometer (Alex Somov)
      • Tested with Cosmics. There is a couple of dead channels. Fernando and Chris will look into fixing one of them (we can live without the other channel).
    • Polarimeter (Beni/M. Dugger).
      • Detector is operational, Voltages were applied and signals observed. M. Dugger will do a complete checkout Jan 6 to 10.
    • LH2 Target (Tim/A. Deur)
      • Surveyed. Target group is working on making electrical powering system compatible with new regulation.
    • TAC (Alex Somov).
      • Assembled, tested and surveyed. Need to be cabled.
    • Slow control (Hovanes).
      • Lots of work to be done. Need ECal hardware (temperature sensor, High Voltage equipment) to be finalized before to start Slow Control work on it.
    • RF (Sergei)
      • Need to wait for the cables to be reconnected. Will be checked sometimes in January.
    • Radiation monitors (A. Deur)
    • x-ray W shield (Tim).
  • Detector systems
    • Start Counter (Simon/Joerg/Beni)
      • Operational, everything look good.
    • FDC (Lubomir).
      • Chiller is now operational.
      • At nominal HV, but two sectors are not quite operational.
      • Two flash ADC are not communicating. Waiting for Cody to check them
    • CDC (Lubomir/Naomi/Beni).
      • Looking good so far. Also need to have BCal trigger to test.
    • Gas system (Beni/Lubomir)
      • Looking good.
    • BCal (Mark Dalton/Malte)
      • Detector appears functional. Need to do the HCO.
    • ECal (Sasha)
      • Waiting for the trigger firmware
    • FCal (Malte/Mark Dalton)
      • Running it now with LED and cosmics. Cosmics data taking started mid-December.
    • ToF (Simon/Beni).
      • Installed: requires re-shimming to match the new ECAL/FCAL
      • Once it is surveyed and cabled (before Christmas in principle), it can be powered and checked out.
      • Need to take (non-beam) data to re-calibrate TDC chips. Need to wait for ToF to be cabled. Calibration data taking takes a long time (~week).
    • DIRC (Justin).
      • Will be tested with LED after the Christmas break.
    • Support from Electronic Group (Eugene)
      • Do we have a phone number for on-call contact?
  • RSAD and ESAD Safety documents (Beni):
      • ESAD is updated and uploaded to github.
      • RSAD is prepared by RadCon and out for the required signatures.
  • QUESTION: What equipment should be left on during the Christmas break?
  • Phones
  • Pictures of the Counting Room white board do not update. Sergei and Alexa A. will look into this. (Hovanes knows how to fix this).
    • tested and working
  • Hall Status/safety (Tim/Scott)
  • 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.
  • Beni will contact Walt Akers to inquire about their status. Done. Walt will take care of it.

Running Shifts Remote

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