Fall 2018 GlueX Run
From Hall D Ops Wiki
Contents
Fall 2018 GlueX Run
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 (same value as Fall 2016 to Spring 2018) until Nov. 15th.
- Then 10.3 GeV until Dec. 10th.
- Then 9.0 GeV until Dec. 19th.
- Solenoid on at 1350A for the 3 energies. ComCal commissioning with solenoid off. Any other field changes should be avoided if possible.
- CW Beam current:
- Range: 1 nA-1.5 μA. 250 MHz frequency.
- Standard production running expected at 530 nA on 1.4·10-4 R.L. radiator (17 μm diamond).
- RSAD limit for most of the run, excluding high intensity tests: 600 nA on 1.6·10-4 R.L. radiator.
- FFB on or Position Slow Lock 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: Yielded reasonable polarization.
- Diamond JD70-105 (47 μm - 3.9·10-4 R.L., 7×7 mm²) - new crystal - good rocking curve
- 40 μm Al radiator (44.9·10-5 R.L.)
- V-wire (for TAC run).
- 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.)
- Goniometer radiators:
- Tagger quadrupole on (-4.2 A).
- Collimator hole: Both 5 mm diameter and 3.4 mm diameter. Default running: 5.0 mm, including with 17 μm diamond.
- Targets:
- LH2 target: cryogenic target
- Solid targets ? TBD
- Miscellaneous:
- DIRC will be installed
- Transition Radiation Detector in the Hall
- Muon chamber will not be in the hall (location interferes with DIRC)
General Information
This document describes the run plan for the Hall D Fall 2018 run.
- Schedule for the run:
- Aug. 15th - 21st: Electron beam restoration
- Aug. 21st - Oct. 28th: GlueX-I run (E=11.64 GeV).
- Oct. 28th - Nov. 19th: DIRC and ComCal installation (Solenoid will be ramped down but kept cool? )
- Nov. 20th - Dec. 09th: GlueX-II and Primex tests. Lower energy measurement checks. (E=10.3 GeV)
- Dec. 10th - Dec. 12th: Linac energy change.
- Dec. 13th - Dec. 19th: GlueX-II and Primex tests. Lower energy measurement checks. (E=9.0 GeV)
- Every Tuesdays: 12h of beam study. Every Thursdays, if necessary: 8h of RF recovery.
- Accelerator overall plan and priorities:
- Deliver physics beam to 4 halls.
- Experiment: GlueX E12-06-102 Production
- Planned tests (Accelerator, related to Hall D):
- Further tests of nA BPM and stripline BPM ?
- Test fast raster beam envelope measurement with larger x-rastering. Need detailed plan, including time estimate
- Planned tests (Hall D):
- At 11.6 GeV:
- Align JD70-105 (47 μm - 3.9·10-4 R.L., 7×7 mm²) (Hovanes) and take enough data to achieve ~1% statistic on rho polarimetry (less than a shift at 190 nA).
- Test fast raster beam envelope measurement with larger x-rastering. (R. Jones) Need detailed plan, including time estimate
- High-intensity GlueX L1 and DAQ tests (A. Somov, S. Furletov)
- ToF trigger test for Muon chamber. With solid target. (D. Lawrence/E. Smith) Need detailed plan, including time estimate
- TRD test (parasitic) (S. Furletov, L. Penchev)
- At 10.2 and 9 GeV:
- DIRC commissioning (J. Stevens) Need detailed plan, including time estimate
- ComCal commissioning with B-Field (A. Somov?) Need detailed plan, including time estimate
- Strait track run (L. Penchev)
- ComCal test (no B-field, no DC on) (A. Somov?) Need detailed plan, including time estimate
- High-intensity GlueX L1 and DAQ tests (A. Somov, S. Furletov)
- At 11.6 GeV:
- Expected Staffing and responsibilities:
- The Run Coordinator oversees the commissioning:
- Aug. 15th-Aug. 21st, 7 days: Alexandre Deur (accelerator restoration)
- Aug. 22nd-Aug. 28th, 7 days: Alexandre Deur
- Aug. 29th-Sept 4th, 7 days: Cristiano Fanelli
- Sept. 5th-Sept. 11th, 7 days: Colin Gleason
- Sept. 12th-Sept. 18th, 7 days: Alexander Austregesilo
- Sept. 19th-Sept. 25th: TBD
- Sept. 26th-Oct. 2nd, 7 days: Naomi Jarvis
- Oct. 3rd-Oct. 9th, 7 days: Stuart Fegan
- Oct. 10th-Oct. 16th: TBD
- Oct. 17th-Oct. 23rd: TBD
- Oct. 24th-Oct. 28th: TBD
- Oct. 29th-Nov. 17th: Hall open for installation
- Nov. 14th-Nov. 20th, 7 days: Alexandre Deur
- Nov. 21st-Nov. 27th, 7 days: Richard Jones
- Nov. 28st-Dec. 4th, 7 days: Wenliang Li
- Dec. 5th-Dec. 11th: TBD
- Dec. 12th-Dec. 20th: Jeorg Reinhold
- The Physics Division Liaison (PDL) and Hall D Work Coordinator/Safety Warden (M. Stevens) verify that the proper safety rules are followed. PDLs are:
- Benedikt Zihlmann.
- The analysis coordinator (Alexander Austregesilo) oversees the off-line diagnostic of the different systems and analysis of the data.
- Shifts: 2 persons per shift.
- The Run Coordinator oversees the commissioning:
- Coordination Activities:
- The RC will attend the MCC meetings at 7:45am and 8:00am and the weekly MCC meeting (Wednesday, 1:30pm). The PDL will attend the weekly MCC meeting.
- Daily run meetings broadcasted on Bluejeans will occur at 8:45am in the counting house conference room. The Run Coordinator will be responsible for organizing and chairing the meeting.
- Useful links:
- Accelerator schedule
- Links to previous runplans
- Links to beam parameters/radiation level monitoring:
- Last 8-hours plots showing 1-minute, 10-minute, and hourly averages
- Same but Last 24-hours
- Same but Last 72-hours
- Week, month, and quarter (3 months) plots also exist, with similar web addresses.
- A map of the radiation monitors