Run Coordination Meetings:Spring2025

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

• Commission upgraded ECal.
  • Other task that can be done if there are pauses in the ECal commissioning
    • Diamond alignment (Hovanes)
    • ...
• 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: To be confirmed
    • Diamond JD70-103 (50 μm - 4.1·10^-4 R.L., 7×7 mm²) Used in CPP.
    • 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.

• Targets:
  • LH2 target: cryogenic target

• TPol converter: 75 μm

• Miscellaneous:
  • PS test area. Tests must be fully parasitic, to be performed in parallel with ECal commissioning and GlueX data taking. No more that 3 persons are allowed in the Hall for these test during controlled access:

General Information

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

• Schedule for the run (see 2025 official schedule (draft)):

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 week delay expected !!

• 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 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
      • Lead glass HV scans (?who?)
      • Others?
  • Diamond alignment: Stable (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.
  • 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. ?? - 24, ?? 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 16-20, 4 days: Mark Dalton

• • 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.

• Useful links:
  • Accelerator schedule and information
    • Long term schedule
    • Scheduled Accelerator Down (SAD)/Maintenance Calendar
    • http://accboard.acc.jlab.org/
    • PD weekly summary (also available from Accelerator's ELOG)
    • RC weekly summary report page
  • Link to Richard Jones program to plot the beam profile at the collimator.
    • Harp extrapolation tool
  • Links to previous runplans
  • Web-accessible EPICS information
    • Hall D EPICS summary screen from CSS
    • Accelerator summary screen from CSS
    • Hall D detectors related EPICS screens
    • Hall D related accelerator screens epicsweb page
  • Links to beam parameters/radiation level monitoring:
    • Last 8-hours plots showing 1-minute, 10-minute, and hourly averages
    • Same but Last 24-hours
    • Same but Last 72-hours
    • Week, month, and quarter (3 months) plots also exist, with similar web addresses.
    • A map of the radiation monitors

Hall D situation room (current run plan)

Hall D counting room white board

Accelerator status

1. • Link to accelerator short term schedule (White board)
   • Link to accelerator SAD calendar
   • Bluejeans code for the daily MCC meetings and Wednesday 1:30 meeting: 569476853

Hot Checkout

To be completed by TBD

• Hot Check OUT Status ( Hot Check OUT Status (off site test version))

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

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

• Remote shift concepts