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

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(List of Run Coordinators and Physics Division Liaison)
(Run Configuration)
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* Beam energy: 11.632 GeV
 
* Beam energy: 11.632 GeV
 
* Solenoid on at 1350A.  
 
* Solenoid on at 1350A.  
* Beam current: CW 1 nA-2μA, 250 MHz frequency. See [https://www.jlab.org/Hall-D/hd_safety.php/RSAD.pdf RSAD] for the RadCon limitations.  
+
* Beam current: CW 1 nA-2μA, 250 MHz frequency. See [https://www.jlab.org/Hall-D/hd_safety.php/2017_F-2018_S/RSAD.pdf RSAD] for the RadCon limitations.  
 
** Regular running: 150 nA on 4.1&middot;10<sup>-4</sup> radiator
 
** Regular running: 150 nA on 4.1&middot;10<sup>-4</sup> radiator
 
* Diamond radiators:
 
* Diamond radiators:

Revision as of 18:47, 15 November 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)

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

  • PDL: Benedikt Zihlmann
  • RCs:
    • Nov. 27th-Dec. 3rd, 7 days: A. Deur (accelerator restoration)
    • Dec. 4th-Dec. 18th, 14 days: A. Deur
    • Xmas break.
    • Jan. 9th-Jan. 11th, 3 days: A. Deur (accelerator restoration)
    • Jan. 12th-Jan. 24th, 12 days: A. Deur
    • Jan. 24th-Jan. 31st, 7 days: Sasha Ostrovidov
    • Jan. 31st-Feb. 7th, 7 days: Justin Stevens
    • Feb. 7th-Feb. 14th, 7 days: TBD
    • Feb. 14th-Feb. 21st, 7 days: Alex Barnes
    • Feb. 21st-Feb. 28th, 7 days: Zisis Papandreou
    • Feb. 28th-March 7th, 8 days: Cristiano Fanelli
    • March 7th-March 14th, 7 days: Richard Jones
    • March 14th-March 22nd, 8 days: Naomi Jarvis

Detailed Running Plan