Difference between revisions of "Run Coordination Meetings:Spring2023"
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Revision as of 12:13, 15 December 2022
Contents
Spring 2023 Run
Run Statistics Google Spreadsheet.
GlueX experiment (January 12 - March 20 2023)
Connect Information
To connect from the outside by phone please do the following
1.) To join via ZoomGov: connect Meeting ID: 160 199 0060 / Passcode 8394
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
- Experiment: GlueX (DIRC included).
- Beam energy expected:
- 11.55 GeV
- Solenoid:
- 1350A
- CW Beam:
- 250 MHz frequency.
- Range: 1 nA-900, with possibility of UP TO 2uA FOR 3 SHIFTS.
- Chopper slit: TBD (assume C, since Hall C will be at 5-pass all the time)
- Standard current and radiators
- ~350 nA on a 4.1·10-4 R.L. radiator (50 μm diamond). (RSAD limit 400nA on 58 μm diamond))
- ~350 nA on a 33.7·10-5 R.L. AL radiator (30 µm Al). (RSAD limit 480nA on 30 µm Al radiator))
- Position Slow Lock on or FFB on (FFB doesn't operate below 50nA).
- Radiators:
- Goniometer radiators:
- Diamond TBD
- Amorphous 40 μm Al radiator (44.9·10-5 R.L.)
- Amorphous 1.86·10-5 R.L., (for TAC run).
- Amorphous
- 1.64 µm Al (1.86·10-5 R.L., see study)
- 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: Default running: 5.0 mm.
- Targets:
- LH2 target: cryogenic target
- PS converter: 75 μm
- Miscellaneous:
- PS test area: tests of FCAL2 modules and calorimeter prototypes
- CCAL: test calorimeter modules and electronics
- Other?
General Information
This document describes the run plan for the Hall D Spring 2023 run.
- Schedule for the run (see July 2022-March 2024 official schedule):
- January 5th -12th: Electron beam restoration.
- January 12th - March 20th: 10 weeks for GlueX high luminosity production.
- Accelerator overall plan and priorities: Deliver physics beam to 4 halls
- Hall A, always at 4-pass, is scheduled stop early, on March. 13th.
- Halls B and or C will always be at 5-pass
- Hall D plan Tentative guess
- Experiment: GlueX-II E12-12-002
- One (?) TAC run.
- Two (?) empty target runs (One at the start of the run, the other consecutive to TAC run)
- Straight track run (?)
- Overall, one night of good data.
- Opportunistic tests?
- Expected Staffing and responsibilities:
- The Run Coordinator oversees the run:
- January 12 - 18, 6 days: Joerg Reinhold
- January 18 - 27, 7 days: Alexandre Deur
- January 27 - Feb. 1st, 7 days: Edmundo Barriga
- Feb. 1st - 8th: 7 days: Beni Zihlmann
- Feb. 8th - 15th: 7 days: Igal Jaegle
- Feb. 15th - 22nd: 7 days: Keigo Mizutani
- Feb. 22nd - March 1st: 7 days: Susan Schadmand
- March 1st - March 8th: 7 days: Tolga Erbora
- March 8th - March 15th: 7 days: Churamani Paudel
- March 15th - March 20th: 5 days: Richard Jones
- The Physics Division Liaison (PDL) and Hall D Work Coordinator/Safety Warden (S. Spiegel) verify that the proper safety rules are followed. PDL is:
- PDL: B. Zihlmann
- The analysis coordinator (Alexander Austregesilo) oversees the off-line diagnostic of the different systems and analysis of the data.
- Shifts: 2 person shifts: 1 local leader and 1 (optionally remote) worker scheduled through the GlueX shift scheduler.
- The Run Coordinator oversees the run:
- 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.
- Run meetings: broadcasted on Zoom. 8:45am in the counting house conference room. The Run Coordinator will be responsible for organizing and chairing the meeting.
- Useful links:
- Accelerator schedule and information
- Link to Richard Jones program to plot the beam profile at the collimator.
- Links to previous runplans
- Web-accessible EPICS information
- 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
Runplan
- Verify electron beam quality and establish photon beam (assume 1 day).
- Ion Chambers trip threshold must be set using diamond TBD as well as the 4 Al. radiators (1 on goni, 3 on amorphous radiator ladder)
- Tune electron beam with radiator retracted
- Radiator (amorphous and diamond) must be retracted. Collimator should be in blocking position.
- Typical levels are (for radiator retracted, collimator fully blocking, electron beam current 50 nA)
- RAD102_P1 ~ 10 mrad/hr (tagger area, gammas, between tagger and dump)
- RAD102_P2 ~30 mrad/hr (tagger area, gammas, on the ground below the goniometer).
- RAD102_P3 ~ 0.3 mrem/hr (tagger area, neutrons, near electronics racks)
- RAD508_P1 < 0.1 mrad/hr (collimator cave, gammas).
- RAD508_P2 ~ 0. mrad/hr (Hall. Neutrons).
- Typical levels are (for radiator retracted, collimator fully blocking, electron beam current 50 nA)
- Radiator (amorphous and diamond) must be retracted. Collimator should be in blocking position.
- Establish good photon beam
- Make sure tagger quadrupole is on and at -4.2 A. (It can be turned on only once the Hall is in power/beam permit.)
- Insert 2*10-5 RL radiator. Call MCC and ask to mask the FSD and turn off beam each time a radiator is moved
- Typical levels are (for 2×10-5 radiator, electron beam current 50 nA)
- RAD102_P1= 35 mrad/hr (tagger area, gammas, between tagger and dump)
- RAD102_P2= ~ 50 mrad/hr (tagger area, gammas, on the ground below the goniometer)
- RAD102_P3= ~2 mrem/hr (tagger area, neutrons, near electronics racks)
- RAD508_P1= ~10 mrad/hr (collimator cave, gammas).
- RAD508_P2 < ~ 0. mrad/hr (Hall. Neutrons).
- Typical levels are (for 2×10-5 radiator, electron beam current 50 nA)
- Insert 2*10-5 RL radiator. Call MCC and ask to mask the FSD and turn off beam each time a radiator is moved
- Verify beam position and envelope (Hovanes).
- Ask MCC to set beam position on 5C11b to x=-0.5 mm and y=+1.0 mm.
- Ask MCC for 5C11 and 5C11B HARP. Then do our radiator HARP scan, see instruction. If it looks good, proceed to next step. Otherwise, inform MCC.
- Insert profiler (no need for masking FSD when an object is inserted in the photon line), run with 10×10-4 radiator and 50 nA. Beam on the profiler should be at x=0.0±0.5cm; y=0.0±0.5cm. If not, inform MCC.
- Radiation level study (1h):
- Run 5 min without radiator (Call MCC and ask to mask the FSD each time the radiator is moved). Beam current: 50nA. Repeat at 100 nA and 200 nA. There is need to run the DAQ or stop the beam between each steps: the data are recorded by EPICS. However, the beam need to be off when moving to a different radiator for the next steps.
- Run 5 min with the 10-4 radiator (Call MCC). Beam current: 50nA. Repeat at 100 nA and 200 nA
- Run 3 min with the 3*10-4 radiator (Call MCC). Beam current: 50nA. Repeat at 100 nA and 200 nA
- Photon flux optimization and Active Collimator calibration. (20 + 20 mins). Call Hovanes.
- re-Insert the 10-4 radiator (Call MCC). Use about 100 nA beam current. This will provide the Act. Col. nominal positions for its high gain values.
- Determine maximum photon beam transmission by doing 2D scans using the collimator x/y motions (Hovanes. 1h)
- Repeat procedure with 2*10-5 radiator (Call MCC) and 50 nA beam current. This will provide the Act. Col. nominal positions for its low gain values.
- Record on the white board what is the beam position on 5C11b and Active Collimator for optimal photon transmission, both for low and high Act. Col. gain.
- Until Hovanes determines to optimal 5C11b and Active Collimator position, keep profiler in and beam locked (MCC's duty) on the nominal 5C11b and x=0,y=0 profiler position. Once Active Collimator nominal beam position is known, retract profiler and lock the beam (MCC) on the active collimator.
- Detector and beamline checkout.
- Any time before starting production (beam quality is not important): microscope HV scan (2h, R. Jones)
- Reestablish L1 trigger (Alex. Somov. 2h?? ).
- PS and TAGH HV scan. (Alex. Somov. 1h).
- Reestablish DAQ (Sergei, 2h?? ).
- General detector calibration + HV scans (Sean Dobbs (703-887-1776) & Beni. 6h). Use 4.5×10-4 Al. radiator (on goni).
- Diamond Which one is TBD alignment check. (Hovanes. 8h?? ).
- GlueX-II production
- Standard configuration: TBD diamond, 350 nA, 5 mm hole, TPol on 75 μm TPol convertor. 2h runs and no more, as it may be hard to correct for calibration drifts. Cycle over 5 sets of runs: 0o, then 90o, then 45o, then 135o, then amorphous runs.
- Amorphous runs: 4.5×10-4 Al. radiator (on goni). 350 nA
- Log in run information in the shift summary (make a run list). For each production run, log useful comments on DAQ comment window, see [1]
- Tagger quadrupole on
- Harp scan (30 min): Every 2 days
- Two?? Empty target run (2h: 1- h to empty/fill back the target, 1h running). Standard production current. To be done after TAC run, beam study or RF recovery.
- Standard configuration: TBD diamond, 350 nA, 5 mm hole, TPol on 75 μm TPol convertor. 2h runs and no more, as it may be hard to correct for calibration drifts. Cycle over 5 sets of runs: 0o, then 90o, then 45o, then 135o, then amorphous runs.
- One?? "TAC" run.
- Long mode 10 min run. Once a week (20 min).
- Amorphous run. Every set of 4 diam. orientation runs. 1h Standard production current. Time to switch from pol. to unpol.: 10min. time to switch from unpol. to pol.: 30min.
Hall D situation room (current run plan)
Hall D counting room white board
Accelerator status
- Link to accelerator short term schedule (White board)
- Link to accelerator SAD calendar
- Bluejeans code for the daily MCC meetings and Wednesday 1:30 meeting: 569476853
Hot Checkout
To be completed by Jan. 10th??
0% ready ; 0% checked ; 100% not ready
Readiness for Spring 2023 run
- Solenoid (Tim/Eugene/Beni):
- Surveys (Tim/Scott)
- DAQ (Sergei).
- Trigger (Alex Somov).
- Beam line
- Diamond status (Tim/Hovanes).
- Tagger hodoscope (A. Somov).
- Tagger microscope (R. Jones/Beni).
- Goniometer (Hovanes).
- Collimator Motion (Hovanes).
- Active collimator detectors(Richard)
- Profiler (Hovanes)
- Luminosity monitor (aka Active Target) (Hovanes).
- Halo monitors (Hovanes)
- Pair Spectrometer (Alex Somov)
- Polarimeter (M. Dugger/Beni/Fernando).
- LH2 Target (Tim/A. Deur)
- TAC (Alex Somov).
- Slow control (Hovanes).
- RF (Sergei)
- Radiation monitors (A. Deur)
- x-ray W shield (Tim/Lubomir).
- Detector systems
- Start Counter (Beni)
- FDC (Lubomir).
- CDC (Beni).
- Gas system (Beni/Lubomir)
- BCal (Mark Dalton/Malte)
- FCal (Malte/Mark Dalton)
- TOF (Beni).
- DIRC (Justin).
- Monitoring (Alexander Austregesilo)
- RSAD and ESAD Safety documents (Beni):
- Hall Status/safety (Tim/Scott)
- Other topics?
Live Camera Feeds from the Four Counting Houses
- These feeds SHOULD be open and visible at all times from one of the monitors in each of the counting houses.
- Management cautions AGAINST opening them from other locations or offsite, out of concern for available bandwidth.