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

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# [https://accweb.acc.jlab.org/hco/reports/overall-status?destinationId=9&categoryId=401&systemId=&regionId=29&groupId=&qualified= Hot Check OUT Status]  <span style="color:green"> 3% ready </span>; <span style="color:#BABC3A">11% checked </span>; <span style="color:red">86% not ready  </span>
 
# [https://accweb.acc.jlab.org/hco/reports/overall-status?destinationId=9&categoryId=401&systemId=&regionId=29&groupId=&qualified= Hot Check OUT Status]  <span style="color:green"> 3% ready </span>; <span style="color:#BABC3A">11% checked </span>; <span style="color:red">86% not ready  </span>
  
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==Readiness for Fall 18 run ==
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==Readiness for Spring 19 run ==
 
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Revision as of 11:32, 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

Information in blue is specifically for the DIRC commissioning

Information in magenta is specifically for the PrimEx-η run

  • 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-η run: off
  • CW Beam:
    • 250 MHz frequency.
    • Range:
      • DIRC commissioning: 50 nA-1.2 μA.
      • PrimEx-η 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-η run: Standard production on 4He: 320 nA. on 10 µm Al (11.2·10-5 R.L.)
      • PrimEx-η run: Standard production on Be: 100 nA. on 10 µm Al (11.2·10-5 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)</font>
      • 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.
  • Miscellaneous:
    • CPP (Charged pion polarizability) shielding will be temporary installed.
    • Transition Radiation Detector in the Hall (Parasitic runs)

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 plan
  • DAQ and Trigger high-intensity tests during DIRC commissioning.
  • CPP tests during last day of DIRC commissioning?
  • Parasitic TRD runs.
  • If opportunity arises, test fast raster beam envelope measurement with larger x-rastering (Richard Jones)
  • Strait track runs not expected to be needed

Runplan

  1. Verify electron beam quality and establish photon beam (assume 1 day).
    • Ion Chambers trip threshold must be set using Al. radiators
    • 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 < 0.1 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= < 0.5 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
      • 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
    • PS detector threshold scan. (A. Somov, 1h)
    • Microscope yield study (row-by-row scan). (Richard Jones/Jim McIntyre, 1h)
      • Call Richard Jones 20 min before the start of this task. Call Alex Somov to set-up the PS trigger.
      • 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).
  3. Check 17 μm diamond (JD70-104) alignement. (We expect to use 2 polarization configuration only) (Hovanes. 1h).
  4. DIRC commissioning
    • DIRC commissioning page
    • Standard configuration: 17 μm diamond, 225 nA (1.2 μA for high intensity run), 5 mm hole, TPol used? 75 μm TPol convertor??. 2h runs and no more, as it may be hard to correct for calibration drifts</font>. DAQ start run overhead: 3min.
    • Amorphous runs. Only for luminosity scans. 50-300 nA. Use 10 µm Al (1.12·10-4 R.L.), on amorphous radiator ladder).
    • Tagger quadrupole on
    • Harp scan (30 min): Only once in the middle of the DIRC commissioning (beside the ones done during beam set-up).
    • One Empty target run (2h: 1- h to empty/fill back the target, 1h running). Standard production current.
    • Long mode 10 min run. Twice or Thrice a week. Beam must be off. On opportunistic basis if possible (Purpose: monitor radiation damage to ST)
    • No TAC run necessary
  5. Transition to PrimEx-η
  • CPP (Charged pion polarizability) tests (Not firm yet.)
    • 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.
  1. PrimEx-η
    • PrimEx-η runplan page
    • Standard configuration: 10 µm Al (11.2·10-5 R.L. Beam current depends on target. 2h runs and no more, as it may be hard to correct for calibration drifts</font>. DAQ start run overhead: 3min.
    • TAC runs
    • Long mode 10 min run. Twice or Thrice a week. Beam must be off. On opportunistic basis if possible (Purpose: monitor radiation damage to ST)

Hall D situation room (current run plan)

Hall D counting room white board


Runplan time charts

Accelerator status

Hot Checkout

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

Readiness for Spring 19 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?
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