Run Coordination Meetings: Spring 2017 Run

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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: 11.640 GeV (value from Fall 2017 measurement).
  • Solenoid on at 1350A. Any field changes should be avoided if possible.
  • CW Beam current:
    • Range: 1 nA-1.5 μA. 250 MHz frequency.
    • Standard production running expected at ~200 nA on 4·10-4 R.L. radiator.
    • RSAD limit for most of the run, excluding high intensity tests: 250 nA on 4·10-4 R.L. radiator.
  • FFB on or Position Slow Lock on (FFB doesn't operate below 50nA).
  • Radiators:
    • Goniometer diamond radiators:
      • J1a50       (50 μm - 4.1·10-4 R.L., 4×4 mm²) - old crystal - excellent rocking curve
      • JD70-100 (58 μm - 4.8·10-4 R.L., 7×7 mm²) - new crystal - excellent rocking curve
      • JD70-105 (47 μm - 3.9·10-4 R.L., 7×7 mm²) - new crystal - good rocking curve
      • JD70-104 (17 μm - 1.4·10-4 R.L., 7×7 mm²) - new crystal - wider rocking curve - marginally usable
    • We also have one 10 μm Al radiator.
    • 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.)
  • Tagger quadrupole on (-4.2 A).
  • Collimator hole: Both 5 mm diameter and 3.4 mm diameter. Default running: 5.0 mm

General Information

This document describes the run plan for the Hall D Spring 2017 run.

  • Schedule for the Spring 2017 run:
  1. Jan. 26th-Jan. 29th: Electron beam restoration
  2. Jan. 30th-Mar. 22nd: Hall D Spring run.
  3. Every Tuesdays: 12h of beam study. Every Thursdays, if necessary: 8h of RF recovery.
  • overall plan and priorities:
  1. The first priority is to do the Halls B and C KPP (key performance parameters).
  2. The second priority is to finish commissioning the 5-pass separator and to ensure we can reliably run with it. This is in preparation for the Fall 17 run when all halls will be a 5-pass (Hall D at 5.5 pass).
    • The above implies that Hall D should be run continuously at 5.5 pass and hence, the Hall D physics run is tie to priority #2.
    • Hall B starts its KPP run (3-pass) on Feb. 3rd. With smooth running, it should achieve the KPP goals in a day or two. Then, it shuts down.
    • Hall C starts its KPP run (3-pass) around March 7th. It will then continue running at 1-pass for spectrometer commissioning (if its magnets are cold and ready). Then, if time permit before the end of the spring run, they may start their physics program at 5-pass.
    • Hall A will be used for its beam-dump when Hall C is down, so that a high current beam can be run in the machine when Hall B and D are running. This high current beam will stabilize the beam orbit in the machine. Hall A may take advantage of receiving beam by opportunistically running its argon experiment. In that case, it will be at 1-pass.
  • Experiment: GlueX E12-06-102 Production
  • Planned tests:
    • High-intensity GlueX test (invasive, 3 shifts)
    • TPol low energy photon run (invasive, 2 shifts)
    • ComCAL(PrimeX) prototype test (parasitic)
    • TRD test (parasitic)
  • Expected Staffing and responsibilities:
    • The Run Coordinator oversees the commissioning:
      • Thur. Jan. 26 - Sun. Jan. 29 (4 days): A. Deur (accelerator restoration)
      • Mon. Jan. 30 - Wed. Feb. 8 (10 days): A. Deur
      • Wed. Feb. 8 - Wed. Feb. 15 (7 days): M. Dalton (with Mon. 6th - Wed. 8th overlap)
      • Wed. Feb. 15 - Wed. Feb. 22 (7 days): A. Ostrovidov (with Mon. 13th - Wed. 15th overlap)
      • Wed. Feb. 22 - Wed. Mar. 1 (7 days): W. Boeglin (with Mon. 20th - Wed. 22nd overlap)
      • Wed. Mar. 1 - Wed. Mar. 8: (7 days): S. Dobbs (with Mon. 27th - Wed. 1st overlap)
      • Wed. Mar. 8 - Wed. Mar. 15: (7 days): R. Jones (with Mon. 6th - Wed. 8th overlap)
      • Wed. Mar. 15 - Wed. Mar. 22: (7 days): D. Lawrence (with Mon. 13th - Wed. 15th overlap)


Runplan

Hall D white board (current run plan)

Hall D counting room white board

Runplan time charts

Accelerator status

Hot Checkout

  1. Hot Check OUT Status 70% ready ; 3% checked ; 27% not ready

Readiness for Fall 16 run

  • Solenoid (Eugene/Beni)
    • Problem with ground fault detector is fixed.
  • Surveys (Tim/Tom)
  • DAQ (Sergei)
    • Found the reason for the corrupted files problem and fixed it. We can run in the same way as Fall 16, or install a hardware controller which redundancy would make the data taking safer.
    • New version of CODA is available.
  • Trigger (Alex S.)
  • Beam line
    • Diamond status.
    • Tagger hodoscope (Nathan/Franz)
      • Need to do the usual basic checks.
    • Tagger microscope (Alex B./Richard)
      • New fibers are now installed. Need to check for dead channels.
      • New fiber installation
    • Goniometer (Hovanes)
      • Need to reglue the diamond that fell off (J1A50 50 μm, 4×4 mm² diamond. It is unclear when it fell. Maybe this is related to the fact that Hovanes and Paul did not find the diamond with the e- beam)
    • Collimator, Active collimator, profiler, flux monitor (Alex B./Hovanes).
    • PS system (Alex S.)
    • Polarimeter (M. Dugger/Nathan)
    • Target (Tim/Alexandre D.)
    • TAC (Hovanes)
    • Slow control (Hovanes)
    • RF (Paul Mattione)
    • Radiation monitors
      • OSL and dosimetry rods installed around goniometer. Photon probe put back there too.
      • Downstream photon probe is broken.
  • Detector systems
    • ST (Mark Ito)
    • FDC (Lubomir)
      • Need to start to get cosmic data
    • CDC (Beni)
      • There may be a leak in the gas system
    • BCal (Elton)
      • Need to re-evaluate what value to use for the integration window.
      • Need to take pulser data.
    • FCal (Adesh)
    • TOF (Mark Ito/Beni/Alex. Ostrovidov)
      • Need to find the optimal HV. The HV-scan data from Fall 16 is not as good as first though, in particular because some have been accidentally lost.
      • There was a broken ADC in slot 5. It is now replaced but it has the wrong firmware.
  • Online monitoring (David L.)
  • Calibration/reconstruction/offline monitoring (Paul Mattione/ Alexander Austregesilo)
  • Level 3 Trigger (David L.)
  • Safety documents (Beni):
    • ESAD must be updated to include safety procedure for TRD.
    • RSAD
  • Hall Status/safety (Tom/Tim)
  • Other topics?
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