Run Group B

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Person Phone Number
Run Coordinator (757) 575-7540 (cell)
Physics Division Liaison (757) 876-1789 (cell)
Shift Expert (757) 329-4846 (cell)
Remote Shifter (day/swing) (757) 310-7198 (cell)
MCC-OPS 7048
Crew Chief 7045
Crew Chief 9-876-3367 (cell)
Program Deputy 9-876-7997 (cell)
Engineering on-call 757 748-5048 (cell)
Engineering on-call secondary 757 897-9060 (cell)
Gate House Guard 5822
Location Phone Number
Hall-B Floor 5165
Hall-B Space Frame 5170, 5171
Hall-B Forward Carriage 5371
Hall-B Counting Room 5245 (Shift1), 5126 (Shift2)
Hall-B Counting Room 5244 (Expert)
Hall-B Gas Shed 7115
System Phone Number On-Call Person
DC (757) 748-5048 (cell) Engineering On-Call
SVT + MM (757) 541-7539 (cell) Yori Gotra Primary
SVT + MM (757) 753-7769 (cell) Rafo Paremuzyan Secondary
ECAL (757) 810-1489 (cell) Cole Smith
FTOF/CTOF (757) 344-7204 (cell) Jose Carvajal
CND (757) 344-7204 (cell) Silvia Niccolai
HTCC-LTCC (757) 344-7174 (cell) Youri Sharabian
FT (757) 344-1848 (cell) Raffaella De Vita
BAND (757) 310-7198 (cell) Florian Hauenstein
RICH (757) 344-3235 (cell) Valery Kubarovsky
DAQ (757) 232-6221 (cell) Sergey Boiarinov
Slow Controls (757) 748-6922 (cell) Nathan Baltzell
Beamline (757) 303-3996 (cell) Eugene Pasyuk
Target (757) 822-9586 (cell) Bob Miller Primary
Target secondary (757) 897-9060 (cell) Denny Insley

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Backup system to the On Call:
Use this ONLY if the On Call
phone is not answered
CLASCSS->Page Expert button

PageExpertScreenshot.png

|} Click Here to edit Phone Numbers. Note, you then also have to edit this page to force a refresh.


CLAS12 Run Group A, Winter 2018
Beam energy 10.6 GeV (5 pass)
Important: Document all your work in the logbook!
Remember to fill in the run list at the beginning and end of each run (clas12run@gmail.com can fill the run list)

RC: Latifa Elouadrhiri

  • (757) 575-7540
  • 9 575 7540 from Counting Room
  • latifa@jlab.org

PDL: Eugene Pasyuk

  • (757) 876-1789
  • 9 876-1789 from Counting Room
  • pasyuk@jlab.org


  • Note 1: Be very mindful of the background rates in the halo counters, rates in the detectors, and currents in the SVT for all settings to ensure that they are at safe levels.
  • Note 2: At the end of each run, follow the DAQ restart sequence "end run", "abort", "reset", "download", "prestart", "go". After DAQ prestart is complete reboot the scaler IOCs with the command: iocjscalerRestartAll.sh. Note: After each step, make sure it is complete in the Run Control message window. If a roc has crashed, find which one it is and issue a roc_reboot command and try again. Contact the DAQ expert if there are any questions.
  • Note 3: Nominal beam positions: 2C21 (X=-0.1 mm, Y=0.1 mm), 2C24 (X=0.5mm, Y=-0.5 mm), 2H01 (X=0.7 mm, Y=-2.0 mm)
  • Note 4: With beam to the Faraday Cup, typical rates on all halo counters upstream from the target should be either 0 or of the order of few counts. Count rates in the range of tens or more may indicate bad beam tune or bleed-through from other Halls.

Run Plan:

(last update 2/14- 8:30 AM)

  • Always monitor the rates on the Halo counters when they are tuning beam to the other halls
  • Do Not turn on or off SVT only SVT expert can do that


Plan for February 14 Day Shift


  • Take production data with at 25 nA, 2hours/run Note that we are running with SVT is OFF and it will remain OFF until the cooling issue is fixed.
  • MCC will take beam away for about one hour starting 8:45
  • We will ask for controlled access for Morgan to wok on one board of the DC
  • Call Dan and Cole to adjust FADC and TDC window the PMT-based detectors
  • Once this they are done, call Maurizio to take data for LTCC calibration/setting
  • After LTCC calibration data taking is complete Resume normal data taking
  • Follow the RC plan and the instruction for beam and data quality monitoring and documentation/run
  • In case of questions contact the RC or system expert


General Instructions:

  • For a given beam current, compute the FSD thresholds according to the Establish Physics Quality Beam document. Call MCC to update the values. Contact the beamline expert if there are questions about setting the FSD thresholds.
  • The main lights in the Hall (dome lights) and the Forward Carriage lights are being kept off because of light leaks affecting some of the detectors. If these lights are switched on during an access, they should be switched off when leaving the Hall. Note that the dome lights when switched off cannot be turned back on immediately because they require 10-15 min to cooldown.
  • Do not run more than 60 minutes above 30 nA with 5-pass beam without the beam blocker in front of Faraday cup. Put beam blocker in for long running at high currents for 5 pass operations.
  • Turn DC HV off only for beam tuning; if no beam is available or when beam is stable, keep them on even if you are not taking data.
  • In case of loss of communication with IOCBTARG, follow instructions at https://logbooks.jlab.org/entry/3502218
  • With any issue contact On-Call Experts or RC - do not spend more than 15-20 min trying to fix the problem.
  • All jscaler iocs (iocjscalerX) on the health screen (under DAQ tab) must be restarted after every DAQ prestart is completed.
  • Check that no unecessary beamline-related screens are open. This includes particularly the big beamline overview screen, but also and any motor/harp/collimator screens, and ioc health screens.

Every Shift:

  • Follow run plan as outlined by RC
  • If any concern about beam stability, ask MCC if orbit locks are on (they should be).
  • Keep shift summary up to date in HBLOG. Record all that happens.
  • Check on white board all scalers, strip charts and monitoring plots that need to be logged regularly
  • Document any beam condition change and send scaler GUIs to HBLOG
  • Fill out BTA hourly. Click "Load from EPICS" to automatically fill the left side.
  1. Fill and submit the shift checklist in the logbook
  2. Perform 2H01A harp scan once per shift or when beam conditions have changed, based on beam monitors (BPMs, halo rates, beam-viewer). During harp scans the HV for DC and HTCC should be OFF.

'''Every Run:'''

  • Log screenshots of:
  • main scaler GUI display
  • Detector occupancy plots
  • Trigger rate gui
  • Beam strip charts


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