Difference between revisions of "Fall 2017 Spring 2018 GlueX Run"

Revision as of 09:13, 5 October 2017

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)

• 2017/12/04 - 2018/03/23, (with Dec. 18th-Jan. 8th Xmas break). 12 weeks; see Accelerator Schedule
• Information for shift takers
• Shift schedule
• Hall D run logbook (HDLOG)

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

• Run Coordination Meetings