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.
  • 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 of the 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.
      • 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 JD80-212 (80 μm - 6.6·10-4 R.L., 8×8 mm²) - To be tested.)
      • (Diamond JD80-213 (80 μm - 6.6·10-4 R.L., 8×8 mm²) - To be tested.)
      • 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

General Information

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

  1. February or March TBD: Electron beam restoration.
  2. January 24th - July 20th: 26 weeks for upgraded ECal commissioning and GlueX-II/JEF. As of 02/25/25, 9 weeks shift ⇒ March. 21st - Sept. 15th ?
  • 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 1-5 5 days: Alexandre Deur
      • March 5-12, 1 week: Simon Taylor
      • March 12-19, 1 week: Igal Jaegle
      • March 19-26, 1 week: Alexandre Deur
      • March 26-Apr. 2, 1 week: Igal Jaegle
      • Apr. 2-9, 1 week: Naomi Jarvis
      • 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: Simon Taylor
      • July 9-16, 1 week:
      • July 16-23, 1 week: Mark Dalton
      • July 23-30, 1 week: Alexandre Deur
      • July 30-Aug. 6, 1 week: Mike McCaughan
      • Aug. 6-13, 1 week: Colin Gleason
      • Aug. 13-20, 1 week: Simon Taylor
      • Aug. 20-27, 1 week: Edmundo Barriga
      • Aug. 27-Sept. 3, 1 week: Boris Grube
      • Sept.3-10, 1 week: Drew Smith
      • Sept.10-15, 6 days: Igal Jaegle
  • 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

5% ready ; 5% checked ; 90% not ready

Readiness of subsystems for Spring 2025 run

  • Solenoid (Tim/Eugene/Beni/Scott):
    • Solenoid is cold, full with LHe and tested to 825A. Waiting to be closer to the start of the run (when the Hall is in Controlled Access) to test it to full current. Check-out done as far as it can be.
  • Surveys (Tim/Scott)
    • All surveys are done:
      • Goniometer survey (with the two new 80 μm diamonds).
      • DIRC. Done on 01/14
      • GEM Done on 01/09
      • Target and Start Counter. Done
      • ToF final survey (after new of absorber installation) done this week.
      • Beam pipe and Luminosity monitor. Done
      • PS done.
  • DAQ (Sergei).
    • Every component of the DAQ are tested and working individually.
    • Beam helicity module has been inserted.
    • New computer for moving data to farms has been set-up.
    • RCDB is working locally, but there are access problems.
    • New version of CODA available: Will need to be tested (Sacha).
    • New nodes (gluon150s) work well and are powerful ⇒ Back end of DAQ should not be a limitation anymore. Still some tests to be done, but they look very promising.
    • Helicity signal: decode evio to online analysis.
  • Trigger (Alex Somov).
    • All 6 VTPs are now installed in VXS crates of ECal and configured. Started testing the trigger. All individual crates are generating triggers. Testing with cosmics. It will then need to be integrated in DAQ (old and new version of CODA).
    • Fast electronic group is done with implementing the new firmware version.
  • Beam line
    • Diamond status (Tim/Hovanes).
      • Thick 80μm new diamonds JD80-212 and JD80-213 arrived at JLab and are now mounted in the goniometer and surveyed.
    • Tagger magnet
      • Ready and NMR is working.
    • Tagger hodoscope (A. Somov).
    • Tagger microscope (R. Jones/Igal).
      • Will start dark current checks soon.
      • Power supply problem is fixed.
    • Goniometer (Hovanes).
      • Removed from beamline and reinstalled ⇒ all diamond alignments have been surveyed.
      • Ready for the run
    • Collimator Motion (Hovanes).
      • tested and working
    • Active collimator detectors(Richard)
      • Will be checked out about a week before the start of the run
      • The communication issue with voltage signals is now fixed.
      • New profiler (Regina): All tests are fine and surveyed,</strike> but will need to be checked with beam.
    • Luminosity monitor (=Active Target) (Hovanes).
      • It is now connected.
    • Halo monitors (Hovanes)
      • Lubomir noticed that turning on HV of the halo monitors generates a noise in the GEM detectors. FDC and CDC were checked for noise but none was seen. Lubomir advises that other detectors (especially TPol) should also be checked for such noise.
      • Mounted. Cables are now connected.
    • Pair Spectrometer (Alex Somov)
      • Tested with Cosmics. There is a couple of dead channels. There is no time/manpower to fix them before the run.
      • As ready as it can be for the run
    • Polarimeter (Beni/M. Dugger).
      • Detector is operational, Voltages were applied and signals observed. M. Dugger plans to come February 27th-30th to do a complete checkout. Chris wrote an ePAS for the task. It was determined than LO/TO is not needed for the check.
    • LH2 Target (Tim/A. Deur)
      • Surveyed and ready.
    • TAC (Alex Somov).
      • Assembled, tested, surveyed and cabled. It is ready.
    • Slow control (Hovanes).
      • ECal controls are working fine. DIRC looks fine too.
      • ECal low voltage control. Done
      • ECal voltage information needs to be archived. So far, too are many parameters requested to be archived to be manageable. Hovanes will trim down the list.
      • TagM control problem is now fixed (it was plugged in the wrong port).
    • RF (Sergei)
      • Done and working.
    • 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. The issue with its interlock (rather, the communication box) is gone.
      • The two flash-ADC that were not communicating are now fixed (one was replaced by one borrowed from the TRD.)
      • Cosmic data analyzed.
    • CDC (Naomi/Lubomir/Beni).
      • Everything is working except one channel that has a bit missing. May need to borrow a fADC module from the TRD.
      • Ready for cosmic and pedestal runs. Beni will take care of it.
    • Gas system (Beni/Lubomir)
      • Looking good.
    • BCal (Mark Dalton/Malte)
      • Detector appears functional. Finalyzing HCO.
      • Regina group is analyzing LED data for several temperatures.
    • ECal (Sasha)
      • Ecal was powered-up during Xmas break and a large sample of cosmic data were taken. They look good and all channels are working. Gains are equalized and 3rd calibration iteration has started. Cosmic data taking started on Jan. 17th and Sasha is working on integrating ECal to the trigger. It is looking good so far.
      • ECal temperature:
        • Installed 3 temperature sensors. ECal temperatures are now in the monitoring and interlock systems.
        • There is a significant temperature rise when the High Voltage are turned on. The ECal crystals are very temperature-sensitive, so this may impact the ECal calibration.
        • To minimize the temperature issue, air flow from cooling fans was increase and new cooling fans were added. Tim added temporary thermocouples for more diagnostics.
        • The chiller temperature has been lowered to 45F (it was initially set to 52F).
        • Despite the above, temperature is still high. There remains the option to cool the beam pipe, but it is not the plan for the current run (not enough time).
      • Dark room access protocol:
        • We need to establish a protocol when accessing the dark room as it takes a long time for the temperature of ECal to stabilize after an access to the dark room: Sacha simulated a 4h access and the temperatures were still not back to nominal after 11h. Thus, it might take a long time to be ready for data taking after a long access to the dark room. More such tests are being conducted so that we can assess how long we must wait after an access of a given duration.
        • The protocol should help carefully plan dark room accesses, e.g. during accelerator maintenance days. It may list possible tasks to do not requiring ECal (e.g., empty target runs, diamond alignment/tests...) while waiting for the temperature to stabilize.
      • The 5-7 channels (including 2 with loose connections) that were faulty are now fixed.
    • FCal (Malte/Mark Dalton)
    • ToF (Simon/Beni).
      • TOF is ready
        • Installed (required re-shimming to match the new ECAL/FCAL).
        • Plastic absorber was installed.
        • The channel that did not count is now fixed. All channels are now good.
      • Beni has finished calibrating the TDC chips and has re-established the cabling.
    • DIRC (Justin).
      • LED system is now fixed. Fixed a few light leaks. Dark cover is now put back. Will do a new round of LED test.
    • Spare part status (Eugene)
    • Support from Electronic Group (Eugene)
      • We will have a phone number for on-call contact. (Mark Dalton obtained a new phone to give to Chris Cuevas)
  • RSAD and ESAD Safety documents (Beni):
    • Ed Folt found a few items that needed to be updated in the new RSAD and ESAD for 2025. Beni has now done the update (01/15/2025). The new document will be sent again to Ed for review.
    • ESAD and RSAD are ready and available at the Hall D safety page.
    • Need run certificate from Patricia. We need to fulfil first the readiness review for the JEF and GlueX experiments (Friday Feb. 14th), summarized in the closeout document
  • 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)
    • Malte reminded us that for all detectors routine maintenance, except the Active Collimator, there is no need for the LO/TO procedure. One can instead use the simpler procedure of "exclusive control"/"plug in hand control".
  • 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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