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.)

• 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:

1. Aug. 15th - 21st: Electron beam restoration
2. Aug. 21st - Oct. 28th: GlueX-I run (E=11.64 GeV).
3. Oct. 28th - Nov. 19th: DIRC and ComCal installation (Solenoid will be ramped down but kept cool? )
4. Nov. 20th - Dec. 09th: GlueX-II and Primex tests. Lower energy measurement checks. (E=10.3 GeV)
5. Dec. 10th - Dec. 12th: Linac energy change.
6. Dec. 13th - Dec. 19th: GlueX-II and Primex tests. Lower energy measurement checks. (E=9.0 GeV)

1. Every Tuesdays: 12h of beam study. Every Thursdays, if necessary: 8h of RF recovery.

• Accelerator overall plan and priorities:

1. 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)

• 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.
• 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
    • long term calendar
    • Scheduled Accelerator Down (SAD)/Maintenance Calendar
    • http://accboard.acc.jlab.org/
  • Links to previous runplans
    • 10.5 GeV Fall 2014
    • 6 GeV spring 2015
    • 12.05 GeV Fall 2015
    • 12.05 GeV Spring 2016
    • 11.64 GeV Fall 2016
    • 11.64 GeV Spring 2017
    • 11.64 GeV Fall 2017 and Spring 2018 runs
  • 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

1. 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 ~ 0.1 mrad/hr (tagger area, gammas, on 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).
     • Hall D tagger CARMS, Ion Chamber and BLM threshold for beam trips should not be changed without approval of Hall D leader.
   • 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 n 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= 0.5 mrad/hr (tagger area, gammas, on 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).
   • Verify beam position and envelope.
     • 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
     • 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
   • Microscope yield study (row-by-row scan). (Richard/Jim McIntyre, 1h)
     • Call Richard Jones 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.
   • 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.
2. Detector and beamline checkout.
   • Reestablish L1 trigger Alex. Somov. 3h).
   • Reestablish DAQ (Sergei, 2h).
   • General detector calibration (Sean Dobbs. 8h). Use 10^-4 radiator.
     • Run 15 min in Long Mode.
3. Align 17 μm diamond (JD70-104) for the 4 polarization configurations (Hovanes. 16h).
4. Gluex data production
   • Physics production data with diamonds and 5 mm hole. Ratio of para./transverse/45^o/135^o 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.
   • 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.
   • If commissioning and analysis are successful, once a day (?), a beam envelope measurement by rastering on Act. Col. ??min
   • Empty target run every 3 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.
5. Align JD70-105 (47 μm - 3.9·10-4 R.L., 7×7 mm²) for 2 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.
6. Two TAC runs at the beginning and end of 11.6 GeV run. (Hovanes, Alex Somov 8/h run.)
7. Luminosity scans (J. Stevens)?
8. Some physics production data with thin diamond and 3.4 mm hole ?
9. ToF runs for muon chamber?
10. Parasitic TRD run
11. During 10.2 GeV run:
    • DIRC commissionning (J. Stevens)
    • ComCal commissioning (A. Somov)
    • Gather data to be compared to CLAS results. (J. Stevens?) Intersperesed with above commissioning
    • 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?
    • Parasitic TRD run
12. During 9.0 GeV run:
    • DIRC commissionning (J. Stevens)
    • ComCal commissioning (A. Somov)
    • Gather data to be compared to CLAS results. (J. Stevens?) Intersperesed with above commissioning
    • Luminosity scans? (J. Stevens?)

Hall D situation room (current run plan)

Hall D counting room white board

Runplan time charts

Fall 2018 time chart:

---

• View Runplan google calendar
• Edit Runplan google calendar
• MCC white board
• Spreadsheet: number of triggers

Accelerator status

1. • Link to accelerator short term schedule

Hot Checkout

1. Hot Check OUT Status 5% ready ; 3% checked ; 92% not ready

Readiness for Fall 18 run

• Solenoid (Eugene/Beni)

• Surveys (Tim/Tom)

• DAQ (Sergei).

• Trigger (Alex S.)

• Beam line
  • Diamond status (Tim/Hovanes).
  • Tagger hodoscope (A. Somov)
  • Tagger microscope (Beni/Richard Jones)
  • Goniometer (Hovanes).
  • Collimator, Active collimator, profiler, flux monitor (Hovanes/Alexandre Deur).
    • Act. Col. baselines have been zeroed. 3 weeks ago. Will recheck them this week
  • PS system (Alex Somov)
  • Polarimeter (Sebastian Cole/M. Dugger).
  • Target (Tim/Alexandre D.)
    • Target to be cooled down on Aug. 20th (C. Keith to test cooling down this week)
    • Alexandre will condense the target Friday (or whenever the beam is becoming ready) and then empty it (so that there is no need to man the counting room). It will then be filled when needed.
  • TAC (Hovanes/Alex Somov)
  • Slow control (Hovanes).
  • RF (Elton)
  • Radiation monitors (Alexandre D.)
  • Halo Monitors (Hovanes)
• Detector systems
  • ST (Mark Ito)
  • FDC (Lubomir)
  • CDC (Beni)
  • BCal (Elton/Mark D.)
  • FCal (Collin Gleason)
  • TOF (Mark Ito/Beni/Alex. Ostrovidov)
  • DIRC (J. Stevens)
  • ComCal (Alex Somov)
  • muon chamber (David Lawrence/Elton)
• Safety documents (Beni):
  • RSAD and ESAD ready. They were sent to Ed Folts for check. Will be sent to Bert
  • Question about adding rapid access to safety document.

• Hall Status/safety (Tom/Tim)
  • Rapid access.
    • progressing and Installation should be ready for the Fall. (But read here)
    • Discussion on what training should be implemented for rapid access?
      • Should add procedure in RWP safety document and send a special email to Hall D collaborations asking to carefully read it.
      • Should train a few local individuals (technicians and physicists) before the Spring18 run.

• Other topics?

Run Planning Meetings Fall 2018 Running

• Run Planning Meetings Fall 2018 Running