Difference between revisions of "Run Coordination Meetings:Summer2022"

Revision as of 06:51, 27 April 2022

Summer 2022 CPP/NPP run

Connect Information

Meeting are via ZoomGov: connect

Meeting ID: 160 199 0060 / Passcode 8394

Beam and Hall configuration

• Experiments: NPP and CPP: June 8th- July 27th 2022. (Followed by PrimEx, start on Aug. 4th 20202).
  • CPP and NPP run Conditions wikipage
  • Charged Pion Polarizability Experiment wikipage
  • Pi0 Polarizability Experiment wikipage
• Beam energy expected:
  • Expected: 11.55 GeV. Probably lower.
• Solenoid:
  • Standard, 1350A ??
• Pair Spectrometer: 6/9 = 0.67 of its nominal field (569.4 A = 0.67x849.9 A)
• Microscope range: [0.301-0.514] of the beam energy or [4.57-6.01 GeV]
• CW Beam:
  • 250 MHz frequency.
  • Current: 1-100?? nA
  • Chopper slit: ??Use Hall A slit until Hall A starts (July 7th), then with Hall B??
• Position Slow Lock on or FFB on (FFB doesn't operate below 50nA).
• Radiators:
  • Goniometer radiators: ??is the list up to date??
    • Diamond JD70-103 (50 μm - 4.1·10^-4 R.L., 7×7 mm²) - New crystal - Not expected to be great according to rocking curve.
    • Diamond JD70-107 (55 μm - 4.6·10^-4 R.L., 7×7 mm²) - New crystal - Not expected to be great according to rocking curve.
    • (Diamond JD70-105 (47 μm - 3.9·10^-4 R.L., 7×7 mm²) - Spent: used for the second part of GlueX's Fall 2018 run and Fall 2019/Spring 2020/Fall 2021)
    • (Diamond JD70-106 (50 μm - 4.1·10^-4 R.L., 7×7 mm²) - Aligned and used shortly during Tagger Accidental test in Spring 2020. Did not display sharp coherent peak.)
    • (Diamond JD70-109 (50 μm - 4.1·10^-4 R.L., 7×7 mm²) - New crystal - Not expected to be good according to rocking curve.)
    • Amorphous 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.)

• Tagger quadrupole on (-4.2 A).

• Collimator hole: Default running: 3.4 mm.

• Targets:
  • Lead target: 0.3mm, 5.4·10^-2 R.L.

• PS converter:  ??75 μm??

• Miscellaneous:
  • PS test area: ??

General Information

This document describes the run plan for the Hall D Summer 2022 run.

• Schedule for the run (see Oct. 2021-March 2023 official schedule):

1. June 1st - 7th: Electron beam restoration.
2. June 8th - July 27th: CPP/NPP run

• Accelerator overall plan and priorities:
  • Deliver physics beam to 4 halls. Hall A starts later, on July 7th. Hall A pass(es): TBD. Halls B and or C will always be at 5th pass (except for 4 days for Hall B), so Hall D beam will always be RF-separated and at 250 MHz.

• Hall D plan
  • Experiments: CPP and NPP
  • Tentative commissioning plan
  • TAC runs (How many?)
  • Energy calibration run: 5min every 2 days with CW beam, I=100nA
  • Straight track run?
  • Any planned tests?

• Expected staffing and responsibilities:
  • The Run Coordinator oversees the run:
    • June 1st-June 7th: 7 days: Volunteer (to be confirmed by Eugene/CPP): Alexandre Deur (accelerator restoration)
    • June 8th-June 15th, 7 days: Volunteer (to be confirmed by Eugene/CPP): Alexandre Deur
    • June 15th-June 22nd, 7 days: Volunteer (to be confirmed by Eugene/CPP): Mark-Macrae Dalton
    • June 22nd-June 29th, 7 days: Volunteer (to be confirmed by Eugene/CPP): Benedikt Zihlmann
    • June 29th-July 6th, 7 days: TBD
    • July 6th-July 13th, 7 days: TBD
    • July 13th-July 20th, 7 days: TBD
    • July 20th-July 27th, 7 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:
    • PDL: Simon Taylor, Deputy PDL: ??
  • The analysis coordinator (??) oversees the off-line diagnostic of the different systems and analysis of the data.
  • Shifts: 2 person per shift. 4 shifts per day Shift Schedule
• 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: Daily. Broadcasted on ZoomGov. 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
    • Long term schedule
    • Scheduled Accelerator Down (SAD)/Maintenance Calendar
    • http://accboard.acc.jlab.org/
    • PD weekly summary (also available from Accelerator's ELOG)
  • Link to Richard Jones program to plot the beam profile at the collimator.
    • Harp extrapolation tool
  • Links to previous runplans
  • Web-accessible EPICS information
    • Hall D EPICS summary screen from CSS
    • Accelerator summary screen from CSS
    • Hall D detectors related EPICS screens
    • Hall D related accelerator screens epicsweb page
  • 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 diamond JD70-105 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).
   • 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).
   • 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 75 nA and 100 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 75 nA and 100 nA
     • Run 3 min with the 3*10^-4 radiator (Call MCC). Beam current: 50nA. Repeat at 75 nA and 100 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.
2. Detector and beamline checkout.
   • Any time before starting production (beam quality is not important): microscope HV scan (2h, R. Jones)
   • Establish L1 trigger (Alex. Somov. 2h).
   • PS and TAGH HV scan. (Alex. Somov. 1h).
   • Establish DAQ (Sergei, 2h).
   • General detector calibration (Sean Dobbs. (703-887-1776) 1h). Use 2×10^-5 Al. radiator. Beam current ??nA
     • Run 15 min (solid time) in Long Mode (Mode 10)
     • Run 15 min (solid time) in Production Mode (Mode 9).
3. CDC HV scans (Naomi 6h). Use 4.5×10^-4 Al. radiator (on goni). Beam current  ??nA
4. 50/55 μm diamond (Start on JD70-10?) alignement. 2 polarization configurations?? (Hovanes. 8h ). Do we want to align the other diamond later?
5. CPP/NPP tentative commissioning plan
6. CPP/NPP run
   • Standard configuration: ~50 μm diamond, 27 nA, 3.4 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 3 sets of runs: 0^o, then 90^o then amorphous runs.??
     • Amorphous runs: 4.5×10^-4 Al. radiator (on goni). 27 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 scans (30 min): Every 2 days
   • Energy calibration runs: 5min every 2 days with CW beam, I=100nA
   • Empty target run(s). How many?? 27 nA??
7. TAC run(s). How many??
   • a few nA, thinest Al. radiator and ComCal.
   • To be coordinated with MCC.
   • Measure bleedthrough. If acceptable, (~nA or less), proceed with TAC-ComCal run. Otherwise, explore possibility for invasive TAC run.
8. ??Long mode 10 min run. Once a week (20 min).??
9. Amorphous run. ??Every set of 2 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

1. • Link to accelerator short term schedule (White board)
   • Link to accelerator SAD calendar
   • ZoomGov link for the daily MCC meetings and Wednesday 1:30 meeting

Hot Checkout

To be completed by Thurs. May. 31st

• Hot Check OUT Status ( Hot Check OUT Status (off site test version))

0% ready ; 0% checked ; 100% not ready

Readiness for Fall 2019/Spring 2020 run

• Solenoid (Eugene/Beni):
• Surveys (Tim/Mark Stevens/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(R. Jones/A. Deur)
  • Profilers (Hovanes)
  • Luminosity monitor (aka Active Target) (Hovanes).
  • Halo monitors (Hovanes)
  • PS system (Alex Somov)
  • Polarimeter (M. Dugger/Beni/Fernando).
  • Pb Target (Tim)
  • TAC (Hovanes/Alex Somov).
  • Slow control (Hovanes).
  • RF (Sergei)
  • Radiation monitors (A. Deur)
  • x-ray W shield (Tim/Lubomir).
• Detector systems
  • ST (Beni)
  • FDC (Lubomir).
  • CDC (Beni).
  • Gas system (Beni/Lubomir)
  • BCal (Mark Dalton)
  • FCal (Mark Dalton)
  • ComCal (Alex Somov).
  • TOF (Beni).
  • Pb absorber and muon detector (Elton??/David Lawrence??/...??)
  • DIRC (Justin).
  • GEM/TRD (Sergei/Lubomir).
  • Monitoring (Alexander Austregesilo)
• RSAD and ESAD Safety documents (Simon):
• Phones

Live Camera Feeds from the Four Counting Houses

1. These feeds SHOULD be open and visible at all times from one of the monitors in each of the counting houses.
2. Management cautions AGAINST opening them from other locations or offsite, out of concern for available bandwidth.

Running Shifts Remote

• Remote shift concepts