Run Group M

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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 (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
Target (757) 822-9586 (cell) Bob Miller Primary
Target secondary (757) 897-9060 (cell) Denny Insley

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CLAS12 Run Group M, Fall 2021
Beam energies: 2.1, 4.0, 6.0 GeV (1.96 GeV/pass)
Important: Document all your work in the logbook!

RC: Stepan Stepanyan

PDL: Valery Kubarovsky


  • 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.

The integrated rates on the upstream counters have to be in the range 0-15 Hz (rates up to 100 Hz are acceptable) and the rates on the midstream counters have to be in the range 10-20 Hz (acceptable up to 50 Hz) @50 nA. Counting rates in the range of hundreds of Hz may indicate a bad beam tune or bleed-through from other Halls.

  • Note 2: Nominal beam positions: 2C24A (X=-2.2 mm, Y=0.7 mm) , 2H01 (X=0.9 mm, Y=-0.3 mm)
  • Note 3: Do not turn OFF FTOF HVs, even during the beam tune with CW beam (turn off if tuned/pulsed beam in the upstream beamline)
  • Note 4: In case of a Torus and/or Solenoid Fast Dump do the following:
    1. Notify MCC to request beam OFF and to drop Hall B status to Power Permit
    2. Call Engineering on-call
    3. Make a separate log entry with copies to HBTORUS and HBSOLENOID logbooks. In the "Notify" field add Probir Goshal, Dave Kashy, and esr-users@jlab.org
    4. Notify Run Coordinator
    5. Turn off all detectors
  • Note 5: When the beam is being delivered to the Faraday Cup:
    1. the Fast Shut Down elements: Upstream, Midstream, Downstream, BOM, and Solenoid should always be in the state UNMASKED
    2. No changes to the FSD threshold should be made without RC or beamline expert approval
  • Note 6: Any request for a special run or change of configuration has to be approved by the RC & documented
  • Note 7: * Fill out BTA hourly. Click "Load from EPICS" to automatically fill the left side then correct as needed.
  • Note 8: Reset CLAS12MON frequently to avoid histogram saturation.
  • Note 9: If crate ADCBAND was rebooted: Contact BAND expert and make a note in the HBBAND logbook and in HBLOG.



Run Plan: Nov 10 - 12 2021

A 3-pass beam to Hall-B should be available some time during the day shift on November 10.

  • Establish physics quality beam for the production running at 3-pass, start from the tagger dump (see instructions [1])
  • After physics quality beam is established to the Faraday cup dump, proceed with the following:
    • Fill the target with LH, see instructions at [2] and turn ON CLAS12 detectors
    • Ask for 10 nA beam, check if rates in the detectors are reasonable
    • Establish production current for LH2 target (limit 80 nA), run DAQ with the production trigger Configuration PROD66 , trigger rgm_6GeV_inb_v1_0.trg and increase beam current to 80 nA with steps of 5 nA. At every step record detector and DAQ rates (dump GUIs into logbook), run the monitoring, and record DC R1 occupancy. After the run is done (went up to 80 nA), call Valery on the PDL phone.

Select the beam current when DC R1 occupancy are <5% and/or the DAQ LT is >95%(consult with RC).

    • Start a new run with the selected beam current, use Configuration PROD66_PIN and the production trigger rgm_6GeV_inb_v1_0.trg , take 100 M events.
    • Trigger Validation Runs with the established conditions (Config. PROD66_PIN :
  1. Random trigger @30 kHz 4 hours with the trigger rgm_6GeV_inb_RNDM_30kHz_v1_0.trg
  2. Trigger without DC roads: 1 hour with the trigger rgm_6GeV_inb_No_Dc_Roads_v1_0.trg
  • Production data taking with rgm_6GeV_inb_v1_0.trg 100 M events per run.

Hall Access Items (Wednesday, November 11 at around 8:30 pm):

  • HTCC (Youri)
  • CTOF (Daniel)
  • DAQ network (Sergey)

DAQ configuration

PROD66 , production trigger rgm_6GeV_inb_v1_0.trg


Shift Worker Notes:

In case of other questions or uncertainties of what to do, call the RC or PDL Every Run: Log screenshots of (this is for the remote shifter)

  • Main beamline GUI overview
  • clas12mon Detector occupancy plots
  • Trigger rate GUI

References and Standards:

(last update 1/14/2020- 23:20)

Nominal Beam Positions

  • 2H01, X: +0.9 mm, Y: -0.3 mm
  • 2C24, X: -2.2 mm, Y: 0.7 mm

FSD Thresholds

  • Upstream: 2000 Hz
  • Midstream: 2000 Hz
  • Downstream: 700000 Hz
  • BOM: 60000

Reference Harp Scans for Beam on Faraday Cup: 2C21 [3], 2C24 (tagger harp) [4], 2H01 [5]

Reference Harp Scans for Beam on Tagger dump: 2C21 [6], 2C24 (tagger harp) [7]

Reference Monitoring Histograms (40 nA, production trigger) [8]

Counter rates

  • Upstream counters integrated rates: 0-15 Hz (acceptable up to 100 Hz are acceptable) @50 nA.
  • Midstream counters: 10-20 Hz (acceptable up to 50 Hz) @50 nA.
  • Counting rates of ~ hundreds of Hz may indicate bad beam tune or bleed-through from other Halls.

Beamline vacuum: should be not higher than 5e-5.


General Instructions:

  • 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 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 cool down.
  • Do not run more than 30 minutes with >150 W beam to Faraday cup without the beam blocker.
  • Turn DC HV off only for beam tuning; if no beam is available or when the 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
  • Check that no unnecessary 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.
  • Reference harp scans: 2C21, 2C24, 2H01

Every Shift:

  • Follow the 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.
  • Document any beam condition change and send scaler GUIs to HBLOG
  • Fill and submit the shift checklist in the logbook

Every Run:

Log screenshots of: (this is for the remote shifter, see dedicated tab above.)

  • Main beamline GUI overview
  • clas12mon Detector occupancy plots
  • Trigger rate GUI
  • FT-Cal FADC scalers

Overview

Tasks


Shift Worker Backup Table

Worker Shift Backup
Date Day Swing Owl
Fri, Oct 15 John Doe Jane Doe Domenico D'Urso
Sat, Oct 16 Jane Doe Bob Cat Alber Einstein
Backup shifter contact info
Name Email Cell phone
Justin Estee esteejus@mit.edu 517 896 5905
Andrew Denniston awild@mit.edu + 987654321
Sara Ratliff ratliff_sara@gwmail.gwu.edu 774 266 6758
Erin Seroka erinseroka@gwmail.gwu.edu> + 987654321


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