Fall 2017 Spring 2018 GlueX Run

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General Information

  • Experiment: GlueX E12-06-102 Production
  • Planned tests:
    • High-intensity GlueX test
    • Align thin (17 μm) diamond
    • TAC V-wire commissioning
    • HV CDC and FDC scans.
    • ToF non-linearity test.
    • Fast raster beam characterization
    • Muon chamber test (parasitic)
    • TRD test (parasitic)

Run Configuration

  • Beam energy: 11.632 GeV
  • Solenoid on at 1350A.
  • Beam current: CW 1 nA-2μA, 250 MHz frequency. See RSAD for the RadCon limitations.
    • Regular running: 150 nA on 4.1·10-4 radiator
  • 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
  • Tagger quadrupole on (-4.2 A).
  • Collimator hole: 5 mm diameter with ≈50 µm diamond radiators, may use 3.4 mm diameter with ≈20 µm diamonds
  • Target: LH2 target

Schedule Details

  1. Nov. 27th-Dec. 3rd: Electron beam restoration
  2. Dec. 4th-Dec. 18th: Hall D Fall run.
  3. Dec. 18th-Jan. 8th: Xmas break. (Solenoid will be ramped down, but kept cool.)
  4. Jan. 9th-Jan. 11th: Electron beam restoration
  5. Jan 12th-Mar. 23rd: Hall D Spring run.
  6. Every Tuesdays: 12h of beam study. Every Thursdays, if necessary: 8h of RF recovery.

List of Run Coordinators and Physics Division Liaison

  • RCs:
    • TBD
    • PDL, Benedikt Zihlmann

Detailed Running Plan