Run Coordination Meetings: Spring 2016 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

4.) More information on connecting to bluejeans is available. The old ESNET and SeeVough Information is archived here.

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: 12.047 GeV (1.090 GeV/linac and 0.123 GeV for the injector and -0.066 GeV of synchrotron radiation losses. To be confirmed.
• Solenoid on at 1200A To be confirmed.
• Beam current: CW 5 na-3 μA. 250 MHz frequency. Default current and radiator: 100 nA/1.12·10^-4 R.L.
• Radiators:
  • Goniometer diamond radiators: 3 test diamonds (J1a50, J2a100 S145-S90) and 3 test foils (two 10 μm Al foils, and one 100 μm Al foil with a holed 10 μm Al foil pressed on it (3mm hole)).
  • Amorphous
    • 1.5 µm Al (1.7·10^-5 R.L.)
    • 10 µm Al (11.2·10^-5 R.L.)
    • 30 µm Al (33.7·10^-5 R.L.)
    • Possibly a ladder with thiner diamonds will be installed during second half of the run. To be confirmed.
• Collimator hole: 5 mm diameter and possibly 3.4 mm diameter.
• Target: LH2 target: cryogenic target

General Information

This document describes the run plan for the Hall D Spring 2016 run.

• Schedule for the Spring 2016 run. (Dates are according to the long term calendar.)
  1. Jan. 28th-Feb. 3rd: Electron beam restoration
  2. Feb. 4th: start of Hall D Spring run.
• Goals for the Srping 2016 run.

1. Beam transport and control commissioning (accelerator responsibility):
   1. Position Fast Feedback: Trent Allison, Brian Bevins. Expected time: 40h.
   2. nA BPM: Trent Allison, Brian Bevins. Expected time: ?? h.
   3. Beam line model test: Todd Satogata). Expected time: 2 h.
2. Continue commissioning of the Hall D equipment (Hall D responsibility):
   1. Trigger: (Alex S).
   2. DAQ (Sergey F).
   3. Goniometer commissioning at 12 GeV (Hovanes/Paul)
   4. π⁰ calibration. (Elton S.)
   5. Trigger Level-3 commissioning. (David L.)
   6. Establish absolute photon flux with PS (Sacha) and with TAC (Hovanes)
   7. 3.4 mm hole run if polarized beam is established with thin diamonds.
   8. TRD ?
   9. Polarimeter (ASU)

• Expected Staffing and responsibilities:
  • The Run Coordinator (RC, Alexandre Deur Feb. 14th - March 15th, ???? March 15th - March 29th, March 29th - April 13th: ???? ) oversees the commissioning.
  • The Physics Division Liaison (PDL, Benedikt Zihlmann) and Hall D Work Coordinator/Safety Warden (T. Carstens) verify that the proper safety rules are followed.
  • Shifts: 2 persons per shift with at least one of the shift taker has Solenoid training.
• 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
    • long term calendar
    • Scheduled Accelerator Down (SAD)/Maintenance Calendar
    • http://accboard.acc.jlab.org/
  • Links to previous runplans
    • 10.5 GeV Fall 2014
    • 6 GeV spring 2015
    • 12.05 GeV Fall 2015
  • 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

1. Re-establish electron and photon beams.
   • Ion Chamber calibration and Rad. Mon. tests.
   • Active collimator calibration.
2. Accelerator Fast Feedback commissioning, Optic test, and Hall D commissioning
   • FFB commissioning will take ~4h/days for a week to 10 days.
   • Optic test (2h).
   • Solenoid tests.
   • Hall D trigger test.
   • Hall D DAQ tuning.
   • π⁰ calibration.
3. nA BPM commissioning and Hall D commissioning
   • nA BPM commissioning.
   • Continue above Hall D tasks if needed, then:
   • More π⁰ calibration data.
   • Goniometer commissioning.
   • Trigger Level-3 commissioning.
4. Hall D run
   • Continue above Hall D tasks if needed, then:
   • Establish absolute photon flux with PS and TAC.
   • Physics production data with test diamond and 5 mm hole.
   • Thin diamond test and production
     • Install thin diamonds.
     • Establish polarized beam with thin diamond.
     • If polarized beam is succesfuly established, then:
       • Take data with thin diamond and 5 mm hole.
       • Move A.C. to 3.4 mm hole and check beam characteristics with 3.4 mm hole.
       • Take data with thin diamond and 3.4 mm hole.
   • Parasitically, test polarimeter if manpower is available.

Discussion on performances and problems during the Fall 15 run. Subsystem preparations and goals for the Spring 16 run

Summary of the Fall 15 run, with details on subsystem performances

• DAQ (Sergei)

• Trigger (Alex S.)

• Beam line
  • Optics (Alexandre D.)
  • Fast Feedback, nA BPM commissioning (Alexandre D.)
  • Tagger hodoscope (Nathan/Franz)
  • Tagger microscope (Alex B./Richard)
  • Goniometer (Hovanes)
  • Active collimator, profiler, flux monitor (Alex B./Hovanes)
  • PS system (Alex S.)
  • TDR (Sergei, Lubomir)
  • Polarimeter (M. Dugger)
  • Target (Alexandre D.)
  • TAC (Hovanes)
  • Slow control (Hovanes)

• Detector systems
  • ST (Mahmoud)
  • FDC (Lubomir)
  • CDC (Beni)
  • FCAL (Adesh)
  • Bcal (Elton)
  • TOF (Mark)

• Online monitoring (David L.)

• Trigger level 3 (David L.)

• Solenoid (Eugene/Beni)
  • Soonest that the solenoid can be ready for testing: Feb. 1st
  • Solenoid test plan:

• Other goals for the Spring 16 run

• RC duty:
  • February 4th to March 15th: Alexandre D.
  • March 15th - March 29th: ??
  • March 29th - April 13th: ??

• Other topics