Difference between revisions of "Run Group A"

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*Except for SVT, turn on HVs for all detectors. Call SVT expert to turn ON SVT.
 
*Except for SVT, turn on HVs for all detectors. Call SVT expert to turn ON SVT.
  
−
*If beam does not suffer too many trips (no more than one trip per 5 minutes and no longer than 1 minute), take data with random trigger for 2 hours (trigger file to be specified). Then switch to luminosity scan. Take the following runs:
+
*If beam does not suffer too many trips (no more than one trip per 10 minutes and no longer than 1 minute), take one run of 50M events with "trigger_random_v10_3.trg" and another run of 50M events with "trigger_random_v10_4.trg".
 +
 
 +
*Then switch to luminosity scan, still with the constrain of having a stable beam. Take the following runs:
 
** 5 nA - 4 hours (3.5 M events)
 
** 5 nA - 4 hours (3.5 M events)
 
** 10 nA - 2 hours (3.5 M events)
 
** 10 nA - 2 hours (3.5 M events)
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** 75 nA - 0.5 h  (12M events).
 
** 75 nA - 0.5 h  (12M events).
  
−
* If beam is too unstable, take data in PROD configuration with trigger file "trigger_v10" at 50 nA.
+
* If beam is too unstable, take data in PROD configuration with trigger file "trigger_v9" at 50 nA.
  
 
<!-- === Updated March 6, 9:39 ===
 
<!-- === Updated March 6, 9:39 ===

Revision as of 22:16, 22 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]

Role Phone Number
Hall B Run Coordinator (757) 575-7540 (cell)
Hall B Physics Division Liaison (757) 876-1789 (cell)
MCC 7048
Crew Chief 7045
Crew Chief (757) 876-3367 (cell)
Program Deputy (757) 876-7997 (cell)
RadCon (757) 876-1743 (cell)
Gate House Guard 5822
Location Phone Number
Hall B Floor 5165
Hall B Space Frame 5170 and 5171
Hall B Forward Carriage 5371
Hall B Gas Shed 7115
Hall B Counting House 5244 (Shift Expert)
Hall B Counting House (757) 329-4846 (Shift Expert cell)
Hall B Counting House 5245 or 5126 (Shift Worker)
Hall A Counting House 5501
Hall C Counting House 6000
Hall D Counting House 5504
Hall B System Phone Number On-Call Person
Engineering (757) 748-5048 (cell)
(757) 897-9060 (cell)		 Engineering On-Call (primary)
Denny Insley (secondary)
Slow Controls (757) 748-6922 (cell) Nathan Baltzell
Beamline (757) 303-3996 (cell) Eugene Pasyuk
DC (757) 218-4372 (cell)
(757) 748-5048 (cell)		 Florian Hauenstein (primary)
Engineering On-Call (secondary)
SVT/MVT/MM (757) 541-7539 (cell)
(757) 753-7769 (cell)		 Yuri Gotra (primary)
Rafo Paremuzyan (secondary)
ECAL (757) 810-1489 (cell) Cole Smith
FTOF/CTOF/CND (757) 344-7204 (cell) Daniel Carman
ALERT (757) 329-4844 (cell) Raphael Dupré
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)
(757) 748-6922 (cell)		 Christopher Dilks (primary)
Nathan Baltzell (secondary)
DAQ (757) 232-6221 (cell) Sergey Boiarinov
HYDRA (317) 550-9226 (cell) Torri Jeske
Authorized Hall B Solenoid/Torus Operators
Hall B Denny Insley, Morgan Cook, Eugene Pasyuk
Magnet Group Probir Ghosha, Renuka Rajput-Ghoshal
Detector Support Group Brian Eng, Pablo Campero, Tyler Lemon
DC Power Onish Kumar, Sarin Philip
  • Note, all non-JLab numbers must be dialed with an area code. When calling from a counting-house landline, dial "9" first.
  • To call JLab phones from outside the lab, all 4-digit numbers must be preceded by 757-269
  • Click Here to edit Phone Numbers. Note, you then also have to edit the current page to force a refresh.

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)


Shifts are canceled until 16:00 Friday March 23rd

RC: Maxime Defurne

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 Faraday Cup the Fast Shut Dow: Upstream, Midstream, Downstream, BOM and Solenoid should 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

  • When beam is available, notify beamline expert and run coordinator. Follow instructions in the "Establish-physics quality beam" procedure at [1] to get an acceptable beam profile. Call PDL to ramp up solenoid and torus to 100%, with negative inbending.
  • Once the beam profile is satisfying, call beamline expert to perform Moller run.
  • After the Moller run, turn off HVs of all detectors. Then send beam to the Faraday Cup with empty target. Make sure Upstream, Midstream, Downstream, BOM and Solenoid FSDs are Unmasked with appropriate thresholds.
  • Once the beam is going to the Faraday cup, call MCC to stop the beam and fill the target.
  • Set correct FSD thresholds for 50nA and then ask MCC to send 50 nA.
  • Except for SVT, turn on HVs for all detectors. Call SVT expert to turn ON SVT.
  • If beam does not suffer too many trips (no more than one trip per 10 minutes and no longer than 1 minute), take one run of 50M events with "trigger_random_v10_3.trg" and another run of 50M events with "trigger_random_v10_4.trg".
  • Then switch to luminosity scan, still with the constrain of having a stable beam. Take the following runs:
    • 5 nA - 4 hours (3.5 M events)
    • 10 nA - 2 hours (3.5 M events)
    • 35 nA - 0.5 h (6 M events)
    • 50 nA - 0.5 h ( 8.5 M events)
    • 75 nA - 0.5 h (12M events).
  • If beam is too unstable, take data in PROD configuration with trigger file "trigger_v9" at 50 nA.


  • 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


Clas12design.png

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