Difference between revisions of "Run Coordination Meetings:Spring2023"

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**Pair Spectrometer (Alex Somov)  
 
**Pair Spectrometer (Alex Somov)  
 
**Polarimeter (M. Dugger/Beni/Fernando). Beni will be back by Jan. 10th and do the HCO then.
 
**Polarimeter (M. Dugger/Beni/Fernando). Beni will be back by Jan. 10th and do the HCO then.
−
**LH2 Target (Tim/A. Deur)  
+
**<strike>LH2 Target (Tim/A. Deur)  
−
***4He target thermal shield to be removed Wednesday  
+
***4He target thermal shield to be removed Wednesday </strike>
−
**TAC (Alex Somov).
+
**<strike>TAC (Alex Somov).
 +
***Need to reconnect the detectors. This will be done after the start of the run during a maintenance day. Will NOT be used for TAC runs, unless the CCAL is not available. 
 +
</strike>
 
**Slow control (Hovanes).  
 
**Slow control (Hovanes).  
 
**RF (Sergei)
 
**RF (Sergei)

Revision as of 09:12, 10 January 2023

Spring 2023 Run

Run Statistics Google Spreadsheet.

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: 199.48.152.152 (bjn.vc) 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 199.48.152.152
  • 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

  • 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
      • ~350 nA on a 4.1·10-4 R.L. radiator (50 μm diamond). (RSAD limit 400nA on 58 μm diamond))
      • ~350 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)
    • Other?

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.
    • Opportunistic tests?
  • 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: Beni Zihlmann
      • Feb. 8th - 15th: 7 days: Igal Jaegle
      • Feb. 15th - 22nd: 7 days: Keigo Mizutani
      • Feb. 22nd - March 1st: 7 days: Susan Schadmand
      • 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: 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 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.

Runplan

  1. Verify electron beam quality and establish photon beam (assume 1 day).
    • Ion Chambers trip threshold must be set using diamond JD70-103 as well as the 4 Al. radiators (1 on goni, 3 on 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 10×10-4 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):
      • 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. (20 + 20 mins). 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.
  2. Detector and beamline checkout.
    • Any time before starting production (beam quality is not important): microscope HV scan (2h, R. Jones)
    • Reestablish L1 trigger (Alex. Somov. 2h?? ).
    • PS and TAGH HV scan. (Alex. Somov. 1h).
    • Reestablish DAQ (Sergei, 2h?? ).
  3. General detector calibration + HV scans (Sean Dobbs (703-887-1776) & Beni. 6h). Use 4.5×10-4 Al. radiator (on goni).
  4. Diamond JD70-103 alignment check (2 directions already aligned for CPP). (Hovanes. 8h).
  5. GlueX-II production
    • Standard configuration: JD70-103 diamond, 350 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 5 sets of runs: 0o, then 90o, then 45o, then 135o, then amorphous runs.
      • Amorphous runs: 4.5×10-4 Al. radiator (on goni). 350 nA
    • 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 (xx hrs)? (J.R.)
    • 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.
  6. High-intensity program (Goal: study running scenarios up to 1 uA beam current)
    • Short intensity scans up to 1 uA for ~1 hour, soon after production is established
      • Observe drift chamber currents and scaler rates (TOF, ST, etc) and record EPICs data
      • Possible scan of tungsten foil absorber thickness hanging from profiler (J.R.: should this be done with or/and w/out any radiators in the beam?)
    • After appropriate lower drift chamber voltages and beam currents are determined and set
      • 2 shifts of production running with full detector to measure yields of rho/omega
      • Production data with currents ranging from 350 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
  7. One?? "TAC" run.
  8. Long mode 10 min run. Once a week (20 min).
  9. 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)

4% ready ; 0% checked ; 96% not ready

Readiness for Spring 2023 run

  • Solenoid (Tim/Eugene/Beni):
  • Surveys (Tim/Scott)
    • DIRC (Monday 01/09/23 ?)
    • ComCal (?)
    • Target (Friday 01/06/23)
    • Microscope (Fiducialization survey: Tuesday? Final survey: Thursday?)

*DAQ (Sergei).

    • Ready
  • Trigger (Alex Somov).
  • Beam line
    • Diamond status (Tim/Hovanes).
    • Tagger hodoscope (A. Somov).
    • Tagger microscope (R. Jones/Igal).
    • Goniometer (Hovanes). Motions was tested at the end of the PrimEx run and all is fine.
    • Collimator Motion (Hovanes).
    • Active collimator detectors(Richard)
      • Will test it in High Gain mode to check for leakage.
    • Profiler (Hovanes)
    • Luminosity monitor (=Active Target) (Hovanes).
    • Halo monitors (Hovanes)
      • Will be re-installed once the beam line is ready
    • Pair Spectrometer (Alex Somov)
    • Polarimeter (M. Dugger/Beni/Fernando). Beni will be back by Jan. 10th and do the HCO then.
    • LH2 Target (Tim/A. Deur)
      • 4He target thermal shield to be removed Wednesday
    • TAC (Alex Somov).
      • Need to reconnect the detectors. This will be done after the start of the run during a maintenance day. Will NOT be used for TAC runs, unless the CCAL is not available.

    • Slow control (Hovanes).
    • RF (Sergei)
    • Radiation monitors (A. Deur)
      • Working fine. HCO done
    • x-ray W shield (Tim/Lubomir/Justin).
      • Install an additional W plate (or thin Pb foil?) on the profiler system (so the W plate can be easily be moved in and out for tests)?
      • Justin and Tim will check the profiler to see if it can be used for this purpose.
  • Detector systems
    • Start Counter (Beni)
      • Need to be re-installed. It should be done by the end of this week (01/07/23).
    • FDC (Lubomir).
      • Need to test some FADC that may need to be replaced.
      • Plan on running cosmics over the week-end to check the FDC/CDC.
    • CDC (Beni).
    • Gas system (Beni/Lubomir)
      • Will switch the CDC gas system to alcohol on Monday (01/09/23)
    • BCal (Mark Dalton/Malte)
    • FCal (Malte/Mark Dalton)
      • Need to replace between 20 and 30 bases. Should be done by 01/06/23.
    • TOF (Beni).
      • HCO will be done on the 01/10/23.
    • DIRC (Justin).
      • Electronics was checked before the winter break and was found to be fine
      • Justin is checking with Chris Stanislav why the LED signals ate not seen. This needs to be resolved before filling the boxes with water.
    • Monitoring (Alexander Austregesilo)
      • Should be ready
  • RSAD and ESAD Safety documents (Beni):
  • 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. (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

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