Run Coordination Meetings:Fall2017 Spring2018 Run
From GlueXWiki
Contents
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 and Spring 2017).
- Solenoid on at 1350A. Any field changes should be avoided if possible.
- CW Beam current:
- Range: 1 nA-1.5 μA. 250 MHz frequency.
- Standard production running expected at ~200 nA on 4·10-4 R.L. radiator.
- RSAD limit for most of the run, excluding high intensity tests: 250 nA on 4·10-4 R.L. radiator.
- FFB on or Position Slow Lock on (FFB doesn't operate below 50nA).
- Radiators:
- Goniometer 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
- We also have one 10 μm Al radiator.
- 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 diamond radiators:
- Tagger quadrupole on (-4.2 A).
- Collimator hole: Both 5 mm diameter and 3.4 mm diameter. Default running: 5.0 mm
- Target: LH2 target: cryogenic target
General Information
This document describes the run plan for the Hall D Fall 2017 and Spring 2018 run.
- Schedule for the run:
- Nov. 27th-Dec. 3rd: Electron beam restoration
- Dec. 4th-Dec. 18th: Hall D Fall run.
- Dec. 18th-Jan. 8th: Xmas break.
- Jan. 9th-Jan. 11th: Electron beam restoration
- Jan 12th-Mar. 23rd: Hall D Fall run.
- 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:
- Fast raster beam characterization (R. Jones)
- Muon chamber test (parasitic?) (E. Smith)
- TRD test (parasitic) (S. Furletov, L. Penchev)
- Expected Staffing and responsibilities:
- The Run Coordinator oversees the commissioning:
- 7 days: (accelerator restoration)
- Week 1:
- Week 2:
- The Run Coordinator oversees the commissioning:
Xmas break.
- 3 days: (accelerator restoration)
- Week 3:
- Week 4:
- Week 5:
- Week 6:
- Week 7:
- Week 8:
- Week 9:
- Week 10:
- Week 11:
- Week 12:
- The Physics Division Liaison (PDL) and Hall D Work Coordinator/Safety Warden (T. Carstens) verify that the proper safety rules are followed. PDLs are:
- Benedikt Zihlmann.
- The analysis coordinator (---) oversees the off-line diagnostic of the different systems and analysis of the data.
- Shifts: 2 persons per shift.
- The Physics Division Liaison (PDL) and Hall D Work Coordinator/Safety Warden (T. Carstens) verify that the proper safety rules are followed. PDLs are:
- 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
Runplan
- Verify electron beam quality and establish photon beam (assume 1 day).
- Ion Chambers trip threshold must be set using Al. radiators
- 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 goniometer).
- RAD102_P3 ~ 0.1 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)
- Hall D tagger CARMS, Ion Chamber and BLM threshold for beam trips should not be changed without approval of Hall D leader.
- Radiator (amorphous and diamond) must be retracted. Collimator should be in blocking position.
- Establish good photon beam
- Make sure tagger quadrupole is on (-4.2 A).
- Insert 2*10-5 RL radiator. (Call MCC and ask to mask the FSD each time the radiator is moved)
- Typical levels are (for 2*10-5 radiator, electron beam current 50 nA)
- RAD102_P1= 15 mrad/hr (tagger area, gammas, between tagger and dump)
- RAD102_P2= 30 mrad/hr (tagger area, gammas, on 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 each time the radiator is moved)
- Once radiation levels are good, proceed with harp scans (Hovanes/Todd. 15 min)
- Take tagger harp scans. Check consistency with Accelerator's harps. Study beam focusing
- 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
- 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
- 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.
- Retract profiler.
- Verify with MCC that position slow lock is back on (locking on Act. Col. and for values corresponding to optimal photon flux).
- Detector and beamline checkout.
- Reestablish L1 trigger Alex. Somov. 3h).
- Reestablish DAQ (Sergei, 2h).
- General detector calibration (Sean Dobbs . 4h). Use 10-4 radiator.
- Run 15 min in Long Mode.
- From here on, the tasks below are interspersed with data production
- Realign 60 μm diamond (JD70-100)?? Align other diamond(s) later?? (Hovanes, Paul Mattione. 12h/diamond).
- Straight track run (16h, nominally at the end of the Spring run)? (Lubomir)
- Ramp down solenoid magnet (2h)
- Take straight track run data (Lubomir)
- Gluex data production
- Log in run information in the shift summary (make a run list). For each production run, log useful comments on DAQ comment window, see [2]
- Tagger quadrupole on
- Harp scans once a day: 15 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).
- 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.
- TAC runs. 2 TAC runs (one at the beginning, one in the middle of the run). (Hovanes, Alex Somov, 10h: 8h run with thick converter. 1- LH2 target empty). Use 3.4mm collimator with 1mm plug in (if available).
- Physics production data with diamonds and 5 mm hole. Ratio of para./transverse/45o/135o data:25/25/25/25. 2h runs and no more, as it may be hard to correct for calibration drifts. Switch polarization every run. Time to switch: 10min. DAQ start run overhead: 3min.
- Luminosity:
- Run at about 200 nA (for 60 μm diamond JD70-100).
- Luminosity:
- Parasitic muon chamber
- Parasitic TRD run
Hall D white board (current run plan)
Hall D counting room white board
Runplan time charts
- View Runplan google calendar
- Edit Runplan google calendar
- MCC white board
- Spreadsheet: number of triggers
Accelerator status
Hot Checkout
- Hot Check OUT Status 100% ready ; 0% checked ; 0% not ready
Readiness for Fall 16 run
- Solenoid (Eugene/Beni)
- Surveys (Tim/Tom)
- DAQ (Sergei)
- Trigger (Alex S.)
- Beam line
- Diamond status (Tim/Hovanes)
- Tagger hodoscope (Franz)
- Tagger microscope (Alex B./Richard)
- Goniometer (Hovanes)
- Collimator, Active collimator, profiler, flux monitor (Alex B./Hovanes).
- PS system (Alex S.)
- Polarimeter (M. Dugger)
- Target (Tim/Alexandre D.)
- TAC (Hovanes)
- Slow control (Hovanes)
- RF (Paul Mattione)
- Radiation monitors
- Detector systems
- ST (Mark Ito)
- FDC (Lubomir)
- CDC (Beni)
- BCal (Elton/Mark D.)
- FCal (---)
- TOF (Mark Ito/Beni/Alex. Ostrovidov)
- Online monitoring (David L.)
- Calibration/reconstruction/offline monitoring (Paul Mattione/ Alexander Austregesilo/Thomas B.)
- Level 3 Trigger (David L.)
- Safety documents (Beni):
- Hall Status/safety (Tom/Tim)
- Other topics?