Run Group C

[edit]

• Shift Documentation
• Phone Numbers
• Short Term Schedule
• Shift Expert
• Worker Shift
• Monitoring
• Useful Links

Shift Schedule Hall B Logbook ESAD, COO, RSAD Shift Checklist Hot Checkout Beam Time Accounting See guidance at BTA User Guide.

Manuals Polarized Target Manual See also the OSP - scroll down for the target description Raster Operations Manual - see also Raster Monitoring Manual DC FTOF ECAL LTCC HTCC RICH: Expert Shift CTOF CND SVT MVT MVT turn on procedure FT Beamline Torus Power-Up/Down Procedure Solenoid Power-Up/Down Procedure DAQ Slow Controls

Procedures Physics-Quality Beam Performing Møller Runs Performing Harp Scans Tunnel/Hall Access ESAD, COO, RSAD

JLab Logbooks MCC Hall-A Hall-B Hall-C Hall-D

NOTE: All NON-JLab numbers MUST be dialed with (757) area code. When calling from a CH landline, dial "9" first. To call from outside, all 4-digit numbers must be preceded by 757-269

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

Run Coordinator: Bryan McKinnon

• (9-)757 575-7540

PDL: Eugene Pasyuk

• (9-)757 876-1789 , x6020 office

Run Group Coordinator: Sebastian Kuhn

• (9-)757 639-6640

Run Coordinator and Target Expert Schedule

Longterm Run Plan

IMPORTANT NOTES:

• In case of medical or fire emergency, call 9-911 from a LANDLINE phone in the Counting House
• If you have symptoms or a positive COVID test, do NOT come to your shift - instead, inform the PDL and the RC and JLab medical services immediately so that replacements can be arranged
• Recently there were several reported cases of COVID on the JLab campus. Everyone is strongly encouraged to wear a face mask while in the counting-house.
• If needed, worker shifts can also be taken from off-site - again, inform the PDL and RC. Also, make sure that you follow the instructions under the "Worker Shift" Tab - you need some lead time to set up!
• Before leaving the hall and going to beam permit check that dome lights, forward carriage lights, and pie tower lights are OFF
• NEW: We have a new policy NOT to leave the beam viewer in the beam at all times, to avoid damage to electronics, cameras etc. Please REMOVE the beam viewer unless we are actively tuning the beam or calibrating beam position/raster.
• NEW: We have a new FSD condition that the raster is operating.
  • IF there is any ammonia sample (NH3 and ND3) in the target, the raster MUST be operating at all times. The Raster FSD must be UNMASKED. Orbit locks MUST be OFF (except for brief moments to restore beam position).
  • For beam tuning or other non-rastered beam, the Raster FSD must be MASKED.
• NOTE: It should no longer be necessary to quit RasterMon at the end of each run and restart after a successful "Go" for the next run, but if DAQ crashes, you SHOULD follow these steps, and the same for mon12. Make sure there is ONLY ONE INSTANCE of RasterMon AND mon12 running anywhere in the Counting House.
• REMINDER FOR ALL EXPERTS: Please take care to fill out the BTA carefully and correctly. The info from EPICS is not always correct, e.g. when taking data with low beam current, you should change the ABU to the proper (estimated) time by hand instead of simply accepting "0" if you are actually taking data.

Run Plan: July 2022

GENERAL INFORMATION

• We should change the HWP ("lambda/2 plate"), after a full day of useful data on NH3 or ND3. WE MUST INFORM THE OTHER HALLS WHENEVER WE DO THAT
• We should reverse the target polarization after every TWO days of good data taking. So the sequence is "1 day on ammonia, swap HWP, one day on ammonia, flip target polarization, one day on ammonia, swap HWP, one day on ammonia".
• Moller runs should be taken with 10 nA.
• Do a RICH Recovery procedure only once a day during day shift (in between runs) if everything is okay. If a RICH problem occurs, you might have to do the RICH Recovery procedure also (see below).
• After each change of running conditions (target type, luminosity): Please check that the trigger alarms (on rate/nA) are set appropriately and change them as needed.

ONGOING ISSUES

• x-Raster power supply oscillations
• Small deuteron polarization / NMR signal (fixed on 7/21/2022 by J. Maxwell)

Short Range Plan

Thursday 28th July

• Take production data on ND3 negative at 4 nA (owl shift)
• PD confirms that beam studies will go ahead (day shift)
  • Confirmed works (restricted access):
    • CTOF helium poisoning studies - Daniel
    • RICH-II work - Ben and Tyler
    • Target ND3 Sample Anneal and polarize in negative - Chris and team
    • ECAL PMT Replacement - Cole
• When works in Hall are complete and beam for physics is available
  • Beam tune
  • Minimize Q_asym
  • Moeller run
  • resume ND3 negative data taking

Friday 29th July

• Take production data on ND3 negative at 4 nA
• Change HWP -> IN at start of Swing

Saturday 30th July

• Owl: Take production data on ND3 negative at 4 nA
• Day : Take production data on ND3 negative at 4 nA
• Swing: Take production data on ND3 negative at 4 nA

Sunday 31th July

• Owl: Take production data on ND3 negative at 4 nA
• Day : Take production data on ND3 negative at 4 nA. Change HWP -> OUT early in the shift.
• Swing: Take production data on ND3 negative at 4 nA

Monday 1st August

• Owl: Take production data on ND3 negative at 4 nA
• Day : Take production data on ND3 negative at 4 nA
  • Expect ACC down period of ~2 hours during Day shift - TBC at 7:45/8:00 meeting
  • During down time switch target polarization to positive
• Swing: Take production data on ND3 postive at 4 nA

Tuesday 2nd August

• Owl: Take production data on ND3 positive at 4 nA
• Day : Take production data on ND3 positive at 4 nA
• Swing: Take production data on ND3 positive at 4 nA

Wednesday 3rd August

• ACC Maintenance Day
  • Switch to NH3 target??

5-pass (10.55 GeV) Running conditions

• Torus at 100% current, inbending electrons. Setpoint = +3770 A (Readback = +3766 A)
• Solenoid setpoint +2417.5 A
• Establish optimal compromise between raster size (if possible, 7 mm radius), luminosity (goal: <5 nA, nominally 4.0 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 15 nA).

DAQ configuration

• Configuration PROD66, trigger file rgc_300MeV_v1.3_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 and reset 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:
    • Quit ALL running instances of mon12 and rastermon
    • "cancel", "reset"
    • "configure", "download", "prestart", "go"
    • restart mon12 and rastermon
• 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 Raster settings

• x: Vpp=2.2 V offset =-0.3V (changed Vpp x & y from 2.1 to 2.2 V on July 19 for ND3)
• y: Vpp=2.2 V offset =+0.25V (changed from +0.4V on July 14, changed from -0.1 on July 1 at 21:00)
• Fundamental Period = 1 s
• The correct raster calibration constants should be automatically loaded by rastermon - see https://logbooks.jlab.org/entry/4004055 - if not, enter them through "Config" by hand.

Nominal Beam Positions

• 2H01, X = -2.3 mm, Y = +1.2mm (Changed from 1.8 mm 7/14/22)
• 2C24, X = -2.0 mm, Y = +0.6 mm
• Orbit lock ONLY if raster is OFF

FSD Thresholds (to be updated)

• Upstream: 2000 Hz
• Midstream: 2000 Hz
• Downstream: 100000 Hz
• BOM: 1000000 Hz
• 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.

Known issues

1. ECAL: ECAL_HV_SEC2_WI_E36 is off as it does not hold voltage
2. tdcecal6 and tdcecal1 rocs: These rocs could show errors in the DAQ screen. If so, check roc-rates, trigger rates and monitoring plots. If all looks okay, continue data taking.
3. DC: hole in sector 3, superlayer 6, would likely need a major physical repair on the chamber itself

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. Polarized target issues: In all cases contact the polarized target expert on call. Examples to keep an eye on: Ice on the run valve See the run valve via camera http://hallbcam04/view/index.shtml, (see also Camera on PT12 -- web link at Lognumber 4002803.) Example of ice on the valve, see https://logbooks.jlab.org/entry/4001225. If you see ice, contact the expert on call. NMR running The JLab Polarization Display is seen via a VNC window in the counting room. Here, the NMR Controls' blue bar should be moving, indicating that the NMR is running and the polarization is measured. If the NMR is not running, contact the expert on call. Alarms from System RG-C Polarized Target (alarm handler). If you get an alarm, ... 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) The info from EPICS is not always correct, e.g. when taking data with low beam current, you should change the ABU to the proper (estimated) time by hand instead of simply accepting "0" if you are actually taking data. 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 Worker Shift tab above.

For REMOTE Shifts (offsite):

• Zoom for 24-7 communication with counting house: https://jlab-org.zoomgov.com/j/1619881100
  • Passcode REQUIRED: 927417
• Remind the expert in the counting house to restart their zoom, if necessary

• Remote VNC connection instructions: https://logbooks.jlab.org/entry/3906039
  • All necessary applications should be avaible from the desktop menu (left/right click on the desktop)
• EPICS GUIs should be accessed ONLY via the desktop menu or by running clascss-remote.
• Remote Demonstration Video (150 MB)

Shift Worker Tasks

Once per run:

• Screenshots: submit to logbook only if you capture the information with beam ON
  • Beamline Overview, in VNC or Web Browser
  • CLAS12 Trigger rates and DAQ status
  • RGC Polarized Target GUI - under Beamline on CSS

• upload monitoring plots to logbook
  • Standard spectra (mon12): look at the spectra: Reference, current, and 5 most recent runs. You can choose a different reference run, the reference numbers refer to logbook entries.
  • Raster Monitoring: upload RasterMon plots to the logbook (use "Log Entry" button on RasterMon screen at bottom-right corner)

Once per shift:

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

Regularly:

• reset & check spectra frequently (every 30 - 60 minutes)
  • Some plots in the online mon12 have a choice of histogram sets per sector, select buttons at the bottom of the plot. That means you have to look at all sectors for these histograms.
  • The logbook entry shows all histograms.

• Log the strip charts in time intervals according to the x-axis time span, using the liveplot configuration Beamline4Logbook_visibleH, see https://logbooks.jlab.org/entry/3978837 .
  • how to get the strip charts: CS-Studio Tools: Strip Charts, livePlot
    • right-click on the livePlot screen and select "Load a Configuration"
    • the configuration "Beamline4Logbook_" provides the beam current, position information and halo counter rates
    • right-click on the screen and select "Make Elog Entry", make sure to log to HBLOG and not ELOG
  • in Web Browser: Upstream/Midstream Halo Counters, Downstream Halo Counters, Beam Currents, BPM Positions

Webcams Tagger Beam Dump Viewer Hall Fisheye Faraday Cup beam viewer To reboot it, run beam-viewer-reboot Hall Cameras: Hall A, Hall B, Hall C, Hall D

Manuals CED Manual MON12 Manual RasterMon Manual off-line Manual

Epics on the web Hall B WebOPI (CUE Login) Accelerator

Live Monitoring Links CLAS12 Monitoring Timelines Live Charge Collected Plots Total Charge on Target Plot

Hall-B Operation Safety Procedures Run Group C Analysis Wiki RCDB CLAS12 mon page Comparison between mon12 histograms (last 5 runs plus reference run)

Accelerator Accelerator Whiteboard Program Deputy Shift Plans Run Coordinator Reports Beam Time Accounting Reports

ZOOM meetings 07:45 RC/PD Morning Meeting 08:00 MCC/OPS Morning and Wednesday 1:30 Meeting See also this log entry 14:00 Daily RC Meeting Zoom Link Meeting ID: 160 867 4253 Passcode: 786506 Meeting Agendae