Difference between revisions of "Run Group A"

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Take data with the 50 nA beam, trigger file trigger_v9.cnf, 100M  events per run.
 
Take data with the 50 nA beam, trigger file trigger_v9.cnf, 100M  events per run.
 
Monitor livetime closely.
 
Monitor livetime closely.
Sunday midnight (between Sunday and Monday) empty the target.\\
+
Sunday midnight (between Sunday and Monday) empty the target.
Gradually increase the current to 150 nA while monitoring downstream halo rates\\
+
 
Run with empty target and 150 nA until 7:30\\
+
Gradually increase the current to 150 nA while monitoring downstream halo rates
7:30 David Anderson turns the torus turbo pump off (will need an rapid access for it)\\
+
 
Run with the empty target and torus turbo pump off until the beam is taken from us\\
+
Run with empty target and 150 nA until 7:30
Ramp down both magnets\\
+
 
Ask for the restricted access after the beam is off (Eugene will do a walk through, Youri will go in for the SVT work, Morgan is going in).\\
+
7:30 David Anderson turns the torus turbo pump off (will need an rapid access for it)
 +
 
 +
Run with the empty target and torus turbo pump off until the beam is taken from us
 +
 
 +
Ramp down both magnets
 +
 
 +
Ask for the restricted access after the beam is off (Eugene will do a walk through, Youri will go in for the SVT work, Morgan is going in).
  
 
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Revision as of 16:51, 3 March 2018

[edit]

If calling local numbers (with area code prefix 757) from the counting room dial 9+[last 7 digits]. To call other area codes dial 91+[10 digit number]

Person Phone Number
Run Coordinator (757) 575-7540 or 757-639-6640 (cell)
Physics Division Liaison (757) 876-1789 (cell)
Shift Expert (757) 329-4846 (cell)
Remote Shifter (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
Polarized Target (757) 218-2266 (cell) Chris Keith
Target (757) 822-9586 (cell) Bob Miller Primary
Target secondary (757) 897-9060 (cell) Denny Insley

Paging system in case the on-call
phone is unanswered

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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: Nick Markov

PDL: Eugene Pasyuk


  • 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: 2H01 (X=1.0 mm, Y=-1.5 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 2/20 - 1:15 AM)

  • When beam to Fraday Cup the Fast Shut Dow: Upstream, Midstream, Downstream, BOM and Solenoid shoudl be always Unmasked
  • 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
  • Any request for special run change of configuration has to be approved by RC & documented

Updated March 3, 15:45

Take data with the 50 nA beam, trigger file trigger_v9.cnf, 100M events per run. Monitor livetime closely. Sunday midnight (between Sunday and Monday) empty the target.

Gradually increase the current to 150 nA while monitoring downstream halo rates

Run with empty target and 150 nA until 7:30

7:30 David Anderson turns the torus turbo pump off (will need an rapid access for it)

Run with the empty target and torus turbo pump off until the beam is taken from us

Ramp down both magnets

Ask for the restricted access after the beam is off (Eugene will do a walk through, Youri will go in for the SVT work, Morgan is going in).


  • In case of questions or uncertainties of what to do, please call the RC



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. Follow this link for detailed instructions https://userweb.jlab.org/~baltzell/CLAS12/SC/jlabScalersOps.txt
  • 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
  • FTCalo FADC scalers


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