Revision as of 09:41, 27 January 2017

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 (value from Fall 2017 measurement).
• 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.)

• 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 Spring 2017 run.

• Schedule for the Spring 2017 run:

1. Jan. 26th-Jan. 29th: Electron beam restoration
2. Jan. 30th-Mar. 22nd: Hall D Spring run.
3. Every Tuesdays: 12h of beam study. Every Thursdays, if necessary: 8h of RF recovery.

• overall plan and priorities:

1. The first priority is to do the Halls B and C KPP (key performance parameters).
2. The second priority is to finish commissioning the 5-pass separator and to ensure we can reliably run with it. This is in preparation for the Fall 17 run when all halls will be a 5-pass (Hall D at 5.5 pass).
   • The above implies that Hall D should be run continuously at 5.5 pass and hence, the Hall D physics run is tie to priority #2.
   • Hall B starts its KPP run (3-pass) on Feb. 3rd. With smooth running, it should achieve the KPP goals in a day or two. Then, it shuts down.
   • Hall C starts its KPP run (3-pass) around March 7th. It will then continue running at 1-pass for spectrometer commissioning (if its magnets are cold and ready). Then, if time permit before the end of the spring run, they may start their physics program at 5-pass.
   • Hall A will be used for its beam-dump when Hall C is down, so that a high current beam can be run in the machine when Hall B and D are running. This high current beam will stabilize the beam orbit in the machine. Hall A may take advantage of receiving beam by opportunistically running its argon experiment. In that case, it will be at 1-pass.

• Experiment: GlueX E12-06-102 Production
• Planned tests:
  • High-intensity GlueX test (invasive, 3 shifts)
  • TPol low energy photon run (invasive, 2 shifts)
  • ComCAL(PrimeX) prototype test (parasitic)
  • TRD test (parasitic)

• Expected Staffing and responsibilities:
  • The Run Coordinator oversees the commissioning:
    • Thur. Jan. 26 - Sun. Jan. 29 (4 days): A. Deur (accelerator restoration)
    • Mon. Jan. 30 - Wed. Feb. 8 (10 days): A. Deur
    • Wed. Feb. 8 - Wed. Feb. 15 (7 days): M. Dalton (with Mon. 6th - Wed. 8th overlap)
    • Wed. Feb. 15 - Wed. Feb. 22 (7 days): A. Ostrovidov (with Mon. 13th - Wed. 15th overlap)
    • Wed. Feb. 22 - Wed. Mar. 1 (7 days): W. Boeglin (with Mon. 20th - Wed. 22nd overlap)
    • Wed. Mar. 1 - Wed. Mar. 8: (7 days): S. Dobbs (with Mon. 27th - Wed. 1st overlap)
    • Wed. Mar. 8 - Wed. Mar. 15: (7 days): R. Jones (with Mon. 6th - Wed. 8th overlap)
    • Wed. Mar. 15 - Wed. Mar. 22: (7 days): D. Lawrence (with Mon. 13th - Wed. 15th overlap)

• • 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 (Paul Mattione) 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 Spring 2016
  • 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 ~ 3 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).
     • <b>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 (-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= 50 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).
   • 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

Is the procedure below still up to date?

1. • • re-Insert the 10^-4 radiator (Call MCC). Use about 200 nA beam current. (This corresponds to the expected photon flux for standard production runs).
     • Determine maximum photon beam transmission by doing 2D scans (x: beam scan, y: beam scan. ±5mm with 0.5mm steps. Stay 5 seconds with stable beam for each steps Remind MCC that they should use only the last corrector (5C11A) to adjust the beam position. If the adjustment results in unacceptable e- beam position in the tagger dump, remind MCC that they should use the tagger magnet only to readjust the e- beam position in the tagger dump. Meanwhile, monitor the rate at the active target and rates (including coinc.) in the pair spectrometer.
     • Repeat procedure with 2*10^-5 radiator (Call MCC) and 50 nA beam current.
     • In addition do x/y scans using the collimator x/y motions and check consistency (Hovanes. 1h)
     • Record on the white board what is the beam position on 5C11b and AD00c for optimal photon transmission.
   • Verify with MCC that position slow lock is back on (locking on profiler and for values corresponding to optimal photon flux).

1. Detector and beamline checkout.
   • Reestablish L1 trigger Alex. Somov. 3h).
   • Reestablish DAQ (Sergei, 2h).
   • Microscope commissioning. Alex Barnes (2h).
   • General detector calibration (Sean Dobbs . 4h). Use 10^-4 radiator. Call Sean when getting ready for this task (at any hour): (703) 887-1776.
     • Run 15 min in Long Mode.
2. Realign 60 μm diamond (JD70-100). Later on, align new 20 μm diamond JD70-104 (Hovanes, Paul Mattione. 12h/diamond).
3. L1 trigger test for high-rate performance tests (Alex Somov. 4h+4h+4h. Use up to 1.5 μA. DC off if necessary)

Hall D white board (current run plan)

Hall D counting room white board

Runplan time charts

• View commissioning time charts

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

Accelerator status

1. • Link to accelerator short term schedule
   • Accelerator schedule through June 2017.

Hot Checkout

1. Hot Check OUT Status 70% ready ; 3% checked ; 27% not ready

Readiness for Fall 16 run

• Solenoid (Eugene/Beni)
  • Problem with ground fault detector is fixed.
  • Solenoid to be ramp-up on Monday morning.

• Surveys (Tim/Tom)

• DAQ (Sergei)
  • Found the reason for the corrupted files problem and fixed it. We can run in the same way as Fall 16, or install a hardware controller which redundancy would make the data taking safer.
  • New version of CODA is available.

• Trigger (Alex S.)

• Beam line
  • Diamond status: They are ready
  • Tagger hodoscope (Nathan/Franz)
    • Took some data. Checks are good so far.
  • Tagger microscope (Alex B./Richard)
    • New fibers are now installed. Need to check for dead channels.
  • Goniometer (Hovanes)
    • Need to reglue the diamond that fell off (J1A50 50 μm, 4×4 mm² diamond. It is unclear when it fell. Maybe this is related to the fact that Hovanes and Paul did not find the diamond with the e- beam)
  • Collimator, Active collimator, profiler, flux monitor (Alex B./Hovanes).
    • Flux monitor not checked yet. Working on profiler software to be able to mask noisy channels.
  • PS system (Alex S.)
  • Polarimeter (M. Dugger/Nathan)
    • Turned it on. Need to check that the data are good.
  • Target (Tim/Alexandre D.)
    • Will be checked by the target group today (Thursday 26th).
  • TAC (Hovanes)
    • Not checked yet.
  • Slow control (Hovanes)
    • Not checked yet.
  • RF (Paul Mattione)
  • Radiation monitors
    • OSL and dosimetry rods installed around goniometer. Photon probe put back there too.
    • Downstream photon probe is broken.
    • Radiation monitors are ready and checked.
• Detector systems
  • ST (Mark Ito)
    • ST has been turned on. Taking data for HCO.
  • FDC (Lubomir)
    • Need to start to get cosmic data
  • CDC (Beni)
    • There may be a leak in the gas system There was no leak.
  • BCal (Elton/Mark D.)
    • BCal is on and working.
    • Need to re-evaluate what value to use for the integration window.
    • Need to take pulser data.
  • FCal (Adesh)
    • 19 bases were replaced on Thursday 26th.
  • TOF (Mark Ito/Beni/Alex. Ostrovidov)
    • Need to find the optimal HV. The HV-scan data from Fall 16 is not as good as first though, in particular because some have been accidentally lost.
    • There was a broken ADC in slot 5. It is now replaced but it has the wrong firmware.
• Online monitoring (David L.)
  • Added a window with reference plots to the monitoring.
• Calibration/reconstruction/offline monitoring (Paul Mattione/ Alexander Austregesilo)
  • Software was updated. Alexander will check if the new codes are fine.
• Level 3 Trigger (David L.)
• Safety documents (Beni):
  • </strike>ESAD was updated to include safety procedure for TRD and is now ready.
  • RSAD
• Hall Status/safety (Tom/Tim)

• Other topics?