Run Group C

From clas12-run
Jump to navigation Jump to search
[edit]

NOTE: All NON-JLab numbers MUST be dialed with (757) area code. When calling from a CH landline, dial "9" first.

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 the current page to force a refresh.



CLAS12 Run Group C, Summer 2022

Daily RC Meetings at 14:00: CH Room 200C, and on Zoom

Zoom information: Link, Meeting ID: 160 867 4253, Passcode: 786506

RC: Sebastian Kuhn

  • 757 575-7540 or
  • 757 639-6640
  • Dial "9" before all numbers when calling from CH

PDL: Eugene Pasyuk

  • (9-)757 876-1789 , x6020 office

Run Coordinator and Target Expert Schedule

Longterm Run Plan

IMPORTANT NOTE: Before leaving the hall and going to beam permit check that dome lights, forward carriage lights, and pie tower lights are OFF

Run Plan: June 2022

  • Tue, 6/7: Complete beam line; Hall closes up at 3:00 for beam line magnet tests
  • Wed, 6/8: Finish all surveys and alignments, calibrate BPMs. Test target samples (TE, polarize). Check out raster.
  • Thu, 6/9: Continue HCO for all components, target polarization / swap tests. Install cross-hair target probe for beam. If ready, close Hall and get ready for beam. (No LHe in target)
  • Fri, 6/10: If possible, tune 1-pass beam to FC.
    • Establish beam following "Physics-Quality Beam" Procedure under "Shift Documentation" tab.
    • Begin commissioning and raster calibration:
      • Center beam on target, using rates in downstream beam monitors. Establish wire positions (2H01 x and y). Center beam on target and turn on orbit lock on 2C24.
      • Follow Raster Manual under "Shift Documentation" tab to calibrate raster settings.
      • Turn on rastering and check all alarms and interlocks.
      • Swap to empty target. Take one run (no LHe) to determine nominal beam center position relative to DC. Move beam to find the target cell edges. Finalize raster setup and set CCDB parameters.
      • Swap to 12C target. Do a current scan to determine optimum combination of raster size and luminosity.
      • Complete other calibration runs as requested: DC HV, BMT HV, TOF.
  • Weekend: Take data with MT, 12C and polarized NH3 targets.
  • Early next week: If time allows, take data on CH2, CD2 and polarized ND3.
  • Then change from 1-pass to 5 pass.

1-pass (2.1 GeV) Running conditions

  • Torus at 50% current, inbending electrons.
  • Establish optimal compromise between raster size (if possible, 7 mm radius), luminosity (goal: 5 nA), and background.
  • Run duration 100M events or 4 hours, whichever comes first.
    • For empty target runs, increase beam current as much as possible (up to 50 nA).


DAQ configuration

  • Configuration TBA, trigger file rgc_100MeV_V1.0_no_DC.trg
  • NOTE: UNLESS a RICH problem crashes the DAQ, do NOT interrupt an otherwise smooth run to do a RICH recovery - instead do this in between runs.
  • NOTE: BOTH the shift expert AND the shift worker MUST check monitoring histograms at least once every 30-60 minutes to make sure there are no major detector problems.Watch the raster pattern!
  • At the end of each run, follow the STANDARD DAQ RESTART SEQUENCE:
    • "end run", if the run ended correctly then: "prestart", "go"
    • if the run did not end correctly or if any ROCs had to be rebooted:
      • "cancel", "reset"
      • "configure", "download", "prestart", "go"
  • After each step, make sure it is completed in the Run Control message window. If a ROC has crashed, find which one it is, issue a roc_reboot command ON JUST THAT ROC and try again. Contact the DAQ expert if there are any questions.

References and Standards

Solenoid set-point of 2417.5 A results in read back 2419.57 A and exactly 5.00 T field on center

Nominal Beam Positions

  • 2H01, X: ? mm, Y: ? mm (only used/useful without restoring)
  • 2C24, X: -? mm, Y: ? mm (orbit lock)

FSD Thresholds (to be updated)

  • Upstream: 2000 Hz
  • Midstream: 2000 Hz
  • Downstream: 500000 Hz
  • BOM: 10000
  • 5 ms dwell time

Reference Harp Scans for Beam on Faraday Cup 2H01 [1]

Reference Harp Scans for Beam on Tagger dump 2C21 [2], tagger harp [3]

Reference Monitoring Histograms

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.


NOTE: BOTH the shift expert AND the shift worker MUST check monitoring histograms at least once every 30 - 60 minutes to make sure there are no major detector problems.

  • Follow the [Short Term Schedule] as outlined by RC
    • includes Run Plan, DAQ configuration, and References and Standards
  • Keep shift summary up to date in HBLOG. Record all that happens.
  • Do a RICH recovery (press the RICH Recovery button on the GUI) once daily during day shift, between runs. Please log in shift summary.
    • Note the automated "RICH Recovery" sequence already confirms RICH4 is up and accepting ssh connections before claiming success. And it also prints out that you have to "Cancel->Reset->Configure->Download->Prestart" before starting the next run.
  • Fill out BTA hourly. Click "Load from EPICS" to automatically fill the left side then correct as needed.
    • Accelerator beam time:
      • ABU: acceptable beam used (eg harp scans, calibrations, trigger settings, running)
      • BANU: beam acceptable but not used (eg radiator change or our problems)
      • BNA: beam not acceptable (eg tuning, drifting, not focused)
    • Experiment beam time
      • ER: experiment ready
      • PCC: planned configuration change (when beam is masked while radiators are moved, DAQ (roc rebooting, restarting runs)), if more than 5 minutes, put a short comment, eg harp scans or DAQ.
      • UED: unplanned experiment down (hardware failure)


In case of other questions or uncertainties of what to do, call the RC or PDL

(remote) shift worker: see dedicated Remote Shifts tab above.


Tasks

Every Run:

  • With beam present, log screen shots of:
    • Beamline Overview, in VNC or Web Browser
    • CLAS12 Trigger rates and DAQ status

Every Shift:

  • Fill the shift checklist
  • Log screen shots of RICH temperature and scaler maps. Log in HBLOG and RICH logbook.

Regularly:

  • reset & check spectra frequently (every 30 - 60 minutes)
    • Some plots in mon12 have a choice of histogram sets per sector, select buttons at the bottom of the plot. Only the currently selected set ends up in the logbook entry.
    • that means you have to look at all sectors for these histograms
Backup shifter contact info
Name Email Cell phone
Bob Cat bob@cat.org
John Doe johndoe@gmail.com

Webcams

Manuals

Epics on the web

Live Monitoring Links



Clas12design.png