Run Coordination Meetings:Spring2019 Run
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Contents
Spring 2019 GlueX Run
Meeting General Agenda
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 Fall 2018 up Nov. 15th).
- Solenoid:
- DIRC commissioning: 1350A
- PrimEx-eta run: off
- CW Beam:
- 250 MHz frequency.
- Range:
- DIRC commissioning: 1 nA-1.2 μA.
- PrimEx-eta run: 1 nA-500 nA. ??
- Chopper slit: shared with Hall A until 03/10/2019. Then alone on slit A.
- Standard current and radiators
- DIRC: Standard commissioning current: 225 nA on 1.4·10-4 R.L. radiator (JD70-104 17 μm diamond).
- DIRC: Hight intensity tests: 1.2 μA on 1.4·10-4 R.L. radiator (JD70-104 17 μm diamond) (or 0.5 μA on JD70-105, 47 μm diamond of 3.9·10-4 R.L.)
- PrimEx-eta run: Standard production on LH2: 100 nA. ?? on 30 µm Al (33.7·10-5 R.L.)
- PrimEx-eta run: Standard production on Be: 30 nA. ?? on 30 µm Al (33.7·10-5 R.L.)
- RSAD limit for most of the run, excluding high intensity tests: ?? nA on ??·10-4 R.L. radiator.
- Position Slow Lock on or FFB 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 and used at the beginning of Fall 2018. Probably has some radiation degradation.
- Diamond JD70-105 (47 μm - 3.9·10-4 R.L., 7×7 mm²) - Used for the second part of GlueX's Fall 2018 run. Good performance.
- 40 μm Al radiator (44.9·10-5 R.L.)
- V-wire (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: Both 5 mm diameter and 3.4 mm diameter. Default running: 5.0 mm.
- Targets:
- LH2 target: cryogenic target
- Be target ?? mm, ??·10-4 R.L.
- Miscellaneous:
- CPP (Charged pion polarizability) tests ??
- Transition Radiation Detector in the Hall ??
General Information
This document describes the run plan for the Hall D Fall 2018 run.
- Schedule for the run:
- Jan. 22nd - 29th: Electron beam restoration
- Jan. 30th - Feb. 12th: 2-weeks DIRC Commissioning (Solenoid at nominal field. LH2 target)
- Feb. 12th - Apr. 7th: 8.5-weeks PrimEx-eta run (Solenoid off. Be then LH2 target ??).
- Nominally, every Mondays: 12h of beam study. Every Tuesdays, if necessary: 8h of RF recovery.
- Accelerator overall plan and priorities:
- Deliver physics beam to 4 halls. (Hall A stop early, on March. 10th. Halls B and or C will always be at 5th pass, so Hall D beam will always be RF-separated.)
- DIRC commissioning page
- PrimeX run page
- Test fast raster beam envelope measurement with larger x-rastering?
- Any other tests/plans (DAQ, Trigger, CPP, TRDS, strait track run)
- Expected Staffing and responsibilities:
- The Run Coordinator oversees the commissioning:
- Jan. 22nd-Jan. 29th, 7 days: Alexandre Deur (accelerator restoration)
- Jan. 30th-Feb. 13th, 7 days: Alexandre Deur
- Feb. 13th-Feb. 20th, 7 days: Colin Gleason
- Feb. 20th-Feb. 27th, 7 days: Sean Dobbs
- Feb. 27th-March 6th, 7 days: Justin Stevens
- March 6th-March 13th, 7 days: Alexander Austregesilo
- March 13th-March 20th, 7 days: TBD
- March 20th-March 27th, 7 days: Richard Jones
- March 27th-Apr. 3rd, 7 days: TBD
- Apr. 3rd-Apr. 7th, 4 days: TBD
- The Physics Division Liaison (PDL) and Hall D Work Coordinator/Safety Warden (M. Stevens) verify that the proper safety rules are followed. PDL is:
- Lubomir Penchev
- 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
- Link to Richard Jones program to plot the beam profile at the collimator.
- 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
Runplan
20 min before the start of this task. Call Alex Somov to set-up the PS trigger.
- Insert 5mm collimator.
- Procedure to follow
- Any type of beam quality will do.
- 10-4 radiator, 10-3 convertor, 80 nA beam current.
- 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.
- Reestablish L1 trigger Alex. Somov. 2h).
- Reestablish DAQ (Sergei, 2h).
- General detector calibration (Sean Dobbs. 1h). Use 10-4 radiator.
- Run 15 min (solid time) in Long Mode (Mode 10).
- Long mode (Mode 10) w/ FCAL LED on 1-10Khz (Mark D.)
- Run 15 min (solid time) in Production Mode (Mode 9).
- CDC HV scan Procedure to follow (Naomi Jarvis, 4h)
- High beam current systematic test (8h. Can be done before or after diamond alignment, as most convenient for the alignment)
- Insert 10 μm Al. radiator (1.12*10-4 RL, on amorphous rad. ladder). Take 200M events (standard prod.) at 680 nA beam current. Monitor carefully rates in wire chambers.
- Insert 40 μm Al. radiator (4.49*10-4 RL, on goni.). Take 200M events (standard prod.) at 170 nA beam current. Monitor carefully rates in wire chambers.
- Align 17 μm diamond (JD70-104) for the 4 polarization configurations (Hovanes. 16h).
- Gluex data production
- Physics production data with 17 μm diamond, 530 nA, 5 mm hole, 75 μm TPol convertor. Ratio of para./transverse/45o/135o data:25/25/25/25. 300M events per configuration. 2h runs and no more, as it may be hard to correct for calibration drifts. Switch polarization every 300M events. Time to switch: 10min. DAQ start run overhead: 3min.
- Amorphous run. Every set of 4 diam. orientation runs. 150M events. 170 nA on 40 μm Al. radiator (4.49*10-4 RL, on goni.). Time to switch from pol. to unpol.: 10min. time to switch from unpol. to pol.: 30min.
- Log in run information in the shift summary (make a run list). For each production run, log useful comments on DAQ comment window, see [3]
- Tagger quadrupole on
- Harp scans once a day: 15 min.
- If commissioning and analysis are successful, once a day, a beam envelope measurement by rastering on Act. Col. ??min
- Empty target run every 2 week (2h: 1- h to empty/fill back the target, 1h running). Standard production current.
- Long mode 10 min run. Once a week (20 min).
- Align JD70-105 (47 μm - 3.9·10-4 R.L., 7×7 mm²) for 2 or 4? polarization configurations (Hovanes 12h) and take enough data to achieve ~1% statistic on rho polarimetry (8h at 190 nA). Decide if it is better to run on this diamond.
- Two TAC runs at the beginning and end of 11.6 GeV run. May require other halls to be off due to bleedthrough (Hovanes, Alex Somov 8/h run.)
- Luminosity scans (J. Stevens)?
- Some physics production data with thin diamond and 3.4 mm hole 11h (1 cycles of runs). More data may be taken if beam stability and assessed polarization warranty it.
- ToF runs for muon chamber? Need solid target. Need detailed plan, including time estimate
- Parasitic TRD run
- During 10.2 GeV and 9.0 runs:
- Re-establish good photon beam. Ion Chamber thresholds to be set each time electron beam energy changes.
- Set PS field to rescaled value?
- Realign one of the diamond?
- DIRC commissionning (J. Stevens) Need detailed plan, including time estimate
- ComCal commissioning (A. Somov) Need detailed plan, including time estimate
- Gather data to be compared to CLAS results. (J. Stevens) Intersperesed with above commissioning. Need detailed plan, including time estimate
- L1 and DAQ high luminosity tests (A. Somov/S. Furletov)
- Luminosity scans? (J. Stevens)
- Straight track run (16h end of 10.2 GeV period) (Lubomir)/ComCal test (A. Somov?)
- Ramp down solenoid magnet (8h)
- Take straight track run data (Lubomir)
- ComCal test (no B-field, no DC on)
- ToF runs for muon chamber? Need solid target. Need detailed plan, including time estimate
- Parasitic TRD runs
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Hall D situation room (current run plan)
Hall D counting room white board
GoogleDoc Spreadsheet of Trigger Statistics
Runplan time charts
Accelerator status
Hot Checkout
- Hot Check OUT Status 0% ready ; 0% checked ; 100% not ready
Readiness for Fall 18 run
- Solenoid (Eugene/Beni)
- Surveys (Tim/Mark)
- DAQ (Sergei).
- Trigger (Alex S.)
- Beam line
- Diamond status (Tim/Hovanes).
- Discussion to install a low quality thick diamond (U.Conn. inventory) for DIRC commissioning: Schedule is too tight.
- Tagger hodoscope (A. Somov)
- Tagger microscope (Beni/Richard Jones)
- All electronic has been turned on. Richard is checking the signals.
- Goniometer (Hovanes).
- Collimator, Active collimator, profiler, luminosity monitor (Hovanes/Alexandre Deur).
- Act. Col. baselines have been zeroed mid July 2018 and checked on 08/15. To be checked before Spring 2019 run.
- luminosity monitor
- PS system (Alex Somov)
- Beam line magnets (PS magnet sweeping magnet and tagger quads).
- Polarimeter (Sebastian Cole/M. Dugger).
- LH2 Target (Tim/Alexandre D.)
- Be target
- TAC (Hovanes/Alex Somov)
- Plan to cured (oven) after the Fall 2018 run?
- During TAC runs. TAC to be inserted on beam line with 2cm offset to avoid damaged area
- Plan to cured (oven) after the Fall 2018 run?
- Slow control (Hovanes).
- RF (Elton/Beni)
- Radiation monitors (Alexandre D.)
- Halo Monitors (Hovanes)
- Diamond status (Tim/Hovanes).
- Detector systems
- ST (Mark Ito)
- FDC (Lubomir)
- CDC (Beni)
- BCal (Elton/Mark D.)
- FCal (Collin Gleason)
- ComCal (Alex Somov)
- TOF (Mark Ito/Beni/Alex. Ostrovidov)
- DIRC (J. Stevens)
- RSAD and ESAD Safety documents (Lubomir):
- Phones
- System experts need to start looking for their on-call phones
- Hall Status/safety (Mark/Tim)
- Other topics?