Run Coordination Meetings:Spring2019 Run

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] https://bluejeans.com/660743227.

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

• Beam energy expected:
  • 11.640 GeV (same value as Fall 2016 to Fall 2018 up Nov. 15th).
• Solenoid:
  • DIRC commissioning: 1350A
  • PrimEx-eta run: off
• CW Beam:
  • 250 MHz frequency.
  • Range:
    • DIRC commissioning: 1 nA-1.2 μA.
    • PrimEx-eta run: 1 nA-500 nA. ??
  • Chopper slit: shared with Hall A until 03/10/2019. Then alone on slit A.
  • Standard current and radiators
    • DIRC: Standard commissioning current: 225 nA on 1.4·10^-4 R.L. radiator (JD70-104 17 μm diamond).
    • DIRC: Hight intensity tests: 1.2 μA on 1.4·10^-4 R.L. radiator (JD70-104 17 μm diamond) (or 0.5 μA on JD70-105, 47 μm diamond of 3.9·10^-4 R.L.)
    • PrimEx-eta run: Standard production on LH2: 100 nA. ?? on 30 µm Al (33.7·10^-5 R.L.)
    • PrimEx-eta run: Standard production on Be: 30 nA. ?? on 30 µm Al (33.7·10^-5 R.L.)
  • RSAD limit for most of the run, excluding high intensity tests: ?? nA on ??·10^-4 R.L. radiator.
• Position Slow Lock on or FFB on (FFB doesn't operate below 50nA).
• Radiators:
  • Goniometer radiators:
    • Diamond JD70-104 (17 μm - 1.4·10^-4 R.L., 7×7 mm²) - wider rocking curve - Tested in Spring 2018 and used at the beginning of Fall 2018. Probably has some radiation degradation.
    • Diamond JD70-105 (47 μm - 3.9·10^-4 R.L., 7×7 mm²) - Used for the second part of GlueX's Fall 2018 run. Good performance.
  • 40 μm Al radiator (44.9·10^-5 R.L.)
  • V-wire (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: Both 5 mm diameter and 3.4 mm diameter. Default running: 5.0 mm.

• Targets:
  • LH2 target: cryogenic target
  • Be target ?? mm,  ??·10^-4 R.L.

• Miscellaneous:
  • CPP (Charged pion polarizability) tests ??
  • Transition Radiation Detector in the Hall ??

General Information

This document describes the run plan for the Hall D Fall 2018 run.

• Schedule for the run:

1. Jan. 22nd - 29th: Electron beam restoration
2. Jan. 30th - Feb. 12th: 2-weeks DIRC Commissioning (Solenoid at nominal field. LH2 target)
3. Feb. 12th - Apr. 7th: 8.5-weeks PrimEx-eta run (Solenoid off. Be then LH2 target ??).

1. Nominally, every Mondays: 12h of beam study. Every Tuesdays, if necessary: 8h of RF recovery.

• Accelerator overall plan and priorities:

1. Deliver physics beam to 4 halls. (Hall A stop early, on March. 10th. Halls B and or C will always be at 5th pass, so Hall D beam will always be RF-separated.)

• DIRC commissioning page
• PrimeX run page
• Test fast raster beam envelope measurement with larger x-rastering?
• Any other tests/plans (DAQ, Trigger, CPP, TRDS, strait track run)

• Expected Staffing and responsibilities:
  • The Run Coordinator oversees the commissioning:
    • Jan. 22nd-Jan. 29th, 7 days: Alexandre Deur (accelerator restoration)
    • Jan. 30th-Feb. 13th, 7 days: Alexandre Deur
    • Feb. 13th-Feb. 20th, 7 days: Colin Gleason
    • Feb. 20th-Feb. 27th, 7 days: Sean Dobbs
    • Feb. 27th-March 6th, 7 days: Justin Stevens
    • March 6th-March 13th, 7 days: Alexander Austregesilo
    • March 13th-March 20th, 7 days: TBD
    • March 20th-March 27th, 7 days: Richard Jones
    • March 27th-Apr. 3rd, 7 days: TBD
    • Apr. 3rd-Apr. 7th, 4 days: TBD
  • The Physics Division Liaison (PDL) and Hall D Work Coordinator/Safety Warden (M. Stevens) verify that the proper safety rules are followed. PDL is:
    • Lubomir Penchev
  • The analysis coordinator (Alexander Austregesilo) oversees the off-line diagnostic of the different systems and analysis of the data.
  • Shifts: 2 persons per shift.
• 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.
  • Daily run meetings broadcasted on Bluejeans will occur at 8:45am in the counting house conference room. The Run Coordinator will be responsible for organizing and chairing the meeting.
• Useful links:
  • Accelerator schedule
    • [2]
    • Scheduled Accelerator Down (SAD)/Maintenance Calendar
    • http://accboard.acc.jlab.org/
  • Link to Richard Jones program to plot the beam profile at the collimator.
    • Harp extrapolation tool
  • Links to previous runplans
    • 10.5 GeV Fall 2014
    • 6 GeV spring 2015
    • 12.05 GeV Fall 2015
    • 12.05 GeV Spring 2016
    • 11.64 GeV Fall 2016
    • 11.64 GeV Spring 2017
    • 11.64 GeV Fall 2017 and Spring 2018 runs
    • 11.64 GeV Fall 2018
  • 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

Runplan

20 min before the start of this task. Call Alex Somov to set-up the PS trigger. 

1. • • Insert 5mm collimator.
     • Procedure to follow
     • Any type of beam quality will do.
     • 10^-4 radiator, 10^-3 convertor, 80 nA beam current.
   • 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.
   • Reestablish L1 trigger Alex. Somov. 2h).
   • Reestablish DAQ (Sergei, 2h).
   • General detector calibration (Sean Dobbs. 1h). Use 10^-4 radiator.
     • Run 15 min (solid time) in Long Mode (Mode 10).
     • Long mode (Mode 10) w/ FCAL LED on 1-10Khz (Mark D.)
     • Run 15 min (solid time) in Production Mode (Mode 9).
     • CDC HV scan Procedure to follow (Naomi Jarvis, 4h)
3. High beam current systematic test (8h. Can be done before or after diamond alignment, as most convenient for the alignment)

• • Insert 10 μm Al. radiator (1.12*10^-4 RL, on amorphous rad. ladder). Take 200M events (standard prod.) at 680 nA beam current. Monitor carefully rates in wire chambers.
  • Insert 40 μm Al. radiator (4.49*10^-4 RL, on goni.). Take 200M events (standard prod.) at 170 nA beam current. Monitor carefully rates in wire chambers.

1. Align 17 μm diamond (JD70-104) for the 4 polarization configurations (Hovanes. 16h).
2. Gluex data production
   • Physics production data with 17 μm diamond, 530 nA, 5 mm hole, 75 μm TPol convertor. Ratio of para./transverse/45^o/135^o data:25/25/25/25. 300M events per configuration. 2h runs and no more, as it may be hard to correct for calibration drifts. Switch polarization every 300M events. Time to switch: 10min. DAQ start run overhead: 3min.
   • Amorphous run. Every set of 4 diam. orientation runs. 150M events. 170 nA on 40 μm Al. radiator (4.49*10^-4 RL, on goni.). Time to switch from pol. to unpol.: 10min. time to switch from unpol. to pol.: 30min.
   • Log in run information in the shift summary (make a run list). For each production run, log useful comments on DAQ comment window, see [3]
   • Tagger quadrupole on
   • Harp scans once a day: 15 min.
   • If commissioning and analysis are successful, once a day, a beam envelope measurement by rastering on Act. Col. ??min
   • Empty target run every 2 week (2h: 1^- h to empty/fill back the target, 1h running). Standard production current.
   • Long mode 10 min run. Once a week (20 min).
3. Align JD70-105 (47 μm - 3.9·10-4 R.L., 7×7 mm²) for 2 or 4? polarization configurations (Hovanes 12h) and take enough data to achieve ~1% statistic on rho polarimetry (8h at 190 nA). Decide if it is better to run on this diamond.
4. Two TAC runs at the beginning and end of 11.6 GeV run. May require other halls to be off due to bleedthrough (Hovanes, Alex Somov 8/h run.)
5. Luminosity scans (J. Stevens)?
6. Some physics production data with thin diamond and 3.4 mm hole 11h (1 cycles of runs). More data may be taken if beam stability and assessed polarization warranty it.
7. ToF runs for muon chamber? Need solid target. Need detailed plan, including time estimate
8. Parasitic TRD run
9. During 10.2 GeV and 9.0 runs:
   • Re-establish good photon beam. Ion Chamber thresholds to be set each time electron beam energy changes.
   • Set PS field to rescaled value?
   • Realign one of the diamond?
   • DIRC commissionning (J. Stevens) Need detailed plan, including time estimate
   • ComCal commissioning (A. Somov) Need detailed plan, including time estimate
   • Gather data to be compared to CLAS results. (J. Stevens) Intersperesed with above commissioning. Need detailed plan, including time estimate
   • L1 and DAQ high luminosity tests (A. Somov/S. Furletov)
   • Luminosity scans? (J. Stevens)
   • Straight track run (16h end of 10.2 GeV period) (Lubomir)/ComCal test (A. Somov?)
     • Ramp down solenoid magnet (8h)
     • Take straight track run data (Lubomir)
     • ComCal test (no B-field, no DC on)
   • ToF runs for muon chamber? Need solid target. Need detailed plan, including time estimate
   • Parasitic TRD runs

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Hall D situation room (current run plan)

Hall D counting room white board

GoogleDoc Spreadsheet of Trigger Statistics

Accelerator status

1. • Link to accelerator short term schedule

Hot Checkout

1. Hot Check OUT Status 0% ready ; 0% checked ; 100% not ready

Readiness for Fall 18 run

• Solenoid (Eugene/Beni)

• Surveys (Tim/Mark)

• DAQ (Sergei).

• Trigger (Alex S.)

• Beam line
  • Diamond status (Tim/Hovanes).
    • Discussion to install a low quality thick diamond (U.Conn. inventory) for DIRC commissioning: Schedule is too tight.
  • Tagger hodoscope (A. Somov)
  • Tagger microscope (Beni/Richard Jones)
    • All electronic has been turned on. Richard is checking the signals.
  • Goniometer (Hovanes).
  • Collimator, Active collimator, profiler, luminosity monitor (Hovanes/Alexandre Deur).
    • Act. Col. baselines have been zeroed mid July 2018 and checked on 08/15. To be checked before Spring 2019 run.
  • luminosity monitor
  • PS system (Alex Somov)
  • Beam line magnets (PS magnet sweeping magnet and tagger quads).
  • Polarimeter (Sebastian Cole/M. Dugger).
  • LH2 Target (Tim/Alexandre D.)
  • Be target
  • TAC (Hovanes/Alex Somov)
    • Plan to cured (oven) after the Fall 2018 run?
      • During TAC runs. TAC to be inserted on beam line with 2cm offset to avoid damaged area
  • Slow control (Hovanes).
  • RF (Elton/Beni)
  • Radiation monitors (Alexandre D.)
  • Halo Monitors (Hovanes)
• Detector systems
  • ST (Mark Ito)
  • FDC (Lubomir)
  • CDC (Beni)
  • BCal (Elton/Mark D.)
  • FCal (Collin Gleason)
  • ComCal (Alex Somov)
  • TOF (Mark Ito/Beni/Alex. Ostrovidov)
  • DIRC (J. Stevens)
• RSAD and ESAD Safety documents (Lubomir):
• Phones
  • System experts need to start looking for their on-call phones
• Hall Status/safety (Mark/Tim)
• Other topics?