Difference between revisions of "Run Coordination Meetings:Spring2019 Run"

Revision as of 08:24, 18 January 2019

Spring 2019 GlueX Run

Meeting General Agenda

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:
  • 11.630 GeV (10 MeV less than value for Fall 2016 to Fall 2018 up Nov. 15th, due to imbalanced linac setting).
• Solenoid:
  • DIRC commissioning: 1350A
  • PrimEx-eta run: off
• CW Beam:
  • 250 MHz frequency.
  • Range:
    • DIRC commissioning: 50 nA-1.2 μA.
    • PrimEx-eta run: 1 nA-500 nA. ??
  • Chopper slit: shared with Hall C 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: 5 days at 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 ⁴He: 320 nA. on 10 µm Al (11.2·10^-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: 1.3 μA on ·10^-4 R.L. radiator for 5 days.
• 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
  • ⁴He target: cryogenic target
  • Be target 18 mm, 5·10^-4 R.L. </font>

• Miscellaneous:
  • CPP (Charged pion polarizability) tests
    • To be set-up and done during the last day of DIRC allocated commissioning time.
    • Use LH2 target, keep solenoid on at nominal field, DIRC stays in nominal position.
    • Move downstream platform downstream
    • Install passive shielding in front of TOF.
    • Tests (to be done at various positions of passive shielding).
    • End of test: remove shielding, ramp down solenoid.
  • Transition Radiation Detector in the Hall
    • Parasitic

General Information

This document describes the run plan for the Hall D Spring 2019 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: 1 day of CPP test?? (Solenoid at nominal field. LH2 target))
4. Feb. 12th - Apr. 7th: 8.5-weeks PrimEx-eta run (Solenoid off. No target, then Be then ⁴He 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
• DAQ and Trigger high-intensity tests during DIRC commissioning.
• CPP tests drug last day of DIRC commissioning?
• Parasitic TRD runs.
• Test fast raster beam envelope measurement with larger x-rastering?
• Strait track runs not

• Expected Staffing and responsibilities:
  • The Run Coordinator oversees the commissioning:
    • Jan. 22nd-Jan. 29th, 7 days: Alexandre Deur (accelerator restoration)
    • Jan. 30th-Feb. 13th, 14 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
    • Long term schedule
    • 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

Hall D situation room (current run plan)

Hall D counting room white board

Runplan time charts

Accelerator status

1. • Link to accelerator short term schedule

Hot Checkout

1. Hot Check OUT Status 3% ready ; 11% checked ; 86% not ready

Readiness for Fall 18 run

• Solenoid (Eugene/Beni)
  • Will test ramp the magnet next week (Jan. 21st-25th)
  • Will ramp the magnet for the run once beam is close to delivery.
• Surveys (Tim/Mark)
  • ComCal.
  • DIRC
• DAQ (Sergei).

• Trigger (Alex S.)
  • During DIRC commissioning, trigger will be the same as for GlueX production runs
  • During PrimEx-Eta run, trigger will be the same as for ComCal Fall 2018 commissioning.
• Beam line
  • Beam pipe
  • Old beam pipe to be installed and used for DIRC commissioning
  • New beam pipe to be installed during transition DIRC-PrimEx transition, and used for PrimEx-Eta run
  • 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)
  • 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
  • ⁴He 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)
    • Will be used for DIRC commissioning. Will remain in place for PrimEx-Eta run, but turned off.
  • 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?