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 (757) 344-7204 (cell) Daniel Carman CND (757) 329-4844 (cell) Pierre Chatagnon 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) Valery Kubarovsky (primary) Nathan Baltzell (secondary) DAQ (757) 232-6221 (cell) Sergey Boiarinov Cryotarget (757) 218-2266 (cell) (757) 871-5374 (cell) (757) 897-1415 (cell) (757) 746-9277 (cell) Xiangdong Wei (first) James Brock (second) James Maxwell (third) Chris Keith (fourth) RG-E Solid Target (757) 344-1848 (cell) Antonio Radic 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: Florian Hauenstein

• (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 SHIFT 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.
• 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!

Run Plan: September 2022

GENERAL INFORMATION

• Before leaving the hall and going to beam permit check that dome lights, forward carriage lights, and pie tower lights are OFF
• Moller runs should be taken with 10 nA.
• 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.
• We have a new FSD condition for when 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.
• Whenever you change the raster offset, ask MCC to NOT correct whatever happens on 2H01. Note new 2H01 values and inform MCC of the new 2H01 x and y values - then they can keep the beam at those positions.
• 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. ALSO: Make sure that the target type is reflected accurately on the target and beamline GUIs.
• 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.
• Whenever the target type or polarization direction changes, or the half-wave plate status changes, make sure to enter a comment in the BEGIN RUN / END RUN comment box.

SHORT RANGE PLAN

• We are currently running with polarised NH3 and will continue to do so for the foreseeable future.
• 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". ND3 may have to be annealed between target polarization changes.
• Do a RICH Recovery procedure 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), but only once . If RICH problem persists, call RICH expert and keep taking data (better data without RICH than no data).
• Take data with the PROD66 configuration. Twice a day, take a run with the PROD66_PIN (same trigger file in both cases). PROD66_PIN should have at least 20 M events, otherwise use PROD66_PIN also the following run.
• Run duration: 100M events or 4 hours, whichever comes first.
• Current: 7 nA. For empty target runs, increase beam current as much as possible.

Start-up after Configuration Change 3-sept

1. First target: 2 cm diameter C target (+ LHe) - DONE
2. Continue C with LHe - DONE
3. 2nd target: raster calibration target - DONE 9/4 15:30
4. 3rd target: Empty. PARTIALLY DONE. Remaining to do (later, when there's an opportunity to change back to the Empty target):
   1. Take a 2 hour run with standard running condition including raster but no LHe. (Beam blocker in, beam current 15-20 nA)
   2. Take 4-hour run WITH LHe at normal level.

5-pass (10.55 GeV) Running conditions

• Torus at 100% current, inbending electrons. Setpoint = +3770 A (Readback = +3766 A)
• Solenoid setpoint +2417.5 A

DAQ configuration

• Configuration PROD66/PROD66_PIN, trigger file rgc_300MeV_v2.3_Q2_1.5GeV2.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 and you will run with the same configuration and trigger file, then: "prestart", "go"
  • If you are changing configuration (between PROD66 and PROD66_PIN) or trigger file: "cancel", "reset", "configure", "download", "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 12 Sept. 22

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 = 3.7 V, offset = -0.65 V
• y: Vpp = 3.05 V, offset = 0.15 V
• Fundamental Period = 2 s
• The correct raster calibration constants should be automatically loaded by rastermon - if not, enter them through "Config" by hand:
• f(x) = 0.0104*x + -25.5
• f(y) = -0.0115*y + 24.4

Nominal Beam Positions

• 2H01, X = -1.8 mm, Y = +1.6 mm
• 2C24A, X = -2.0 mm, Y = +0.6 mm
• 2C21A, X = -0.4 mm, Y = +0.6 mm
• Orbit lock on 2C24 and 2H01 ONLY if raster is OFF, otherwise orbit lock on 2C21 and 2C24 (note: this appears as "stopped" on the beam line GUI).

FSD Thresholds

• Upstream: 2000 Hz
• Midstream: 2000 Hz
• Downstream: 100000 Hz (1e5)
• BOM: 1000000 Hz
• 5 ms dwell time

Reference plots and histograms

• Harp Scans for Beam on Faraday Cup, 2H01 [1], more recent scan (3 Sept 2022): [2]
• Harp Scans for Beam on 2C21 [3], more recent scan (3 Sept 2022): [4]
• Harp Scan on Tagger Dump (3 Sept. 2022) [5]
• Monitoring Histograms (12 Sept 2022) [6]
• RasterMon (12 Sept 2022) [7]

Counter rates

• With 7 nA beam, the upstream counters should read zero.
• The Midstream ones should read 0-20 Hz or so.
• Greatly increased rates may indicate bad beam tune or bleed-through from other Halls.

Known issues

1. 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.
2. DC: hole in sector 3, superlayer 6, would likely need a major physical repair on the chamber itself
3. BMT (MVT) strips trip frequently. Keep an eye on the HV GUI and reset any trips.
4. SLM rates too low: the values should not be trusted, there's an issue with the associated sensors. Check the charge asymmetry from the Faraday Cup info instead.

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. Ensure that all monitoring plots for each run are logged correctly. Don't forget the new Helicity-Latched Trigger GUI and the Helicity Trigger Asymmetry strip-chart 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. The NMR frequency needs to be controlled by hand. If you see target polarisation (on the red graph) starting to drop, call the expert. They will guide you through the adjustment procedure. This will be in the electronics room by the door to the counting room, in the third crate from the right ("CR-6"). White box which says "EIO Tube" and has a red button at the top right, which says "Move", next to a display for "Position". This will be the one to press, under guidance of the target expert. 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
  • Beam current and position strip-charts -- you can submit multiple times per run, especially if there is something interesting on them!
  • RGC Polarized Target GUI - under Beamline on CSS
  • NEW!!! Helicity-Latched Trigger GUI (https://logbooks.jlab.org/entry/4041009) and the Helicity Trigger Asymmetry strip-chart (example https://logbooks.jlab.org/entry/4040779). To get the helicity-latched trigger GUI, look under "DAQ" in CS-Studio, for the strip-charts see below

• 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).
  • An example of a "decent looking" RasterMon is here: [8]. The x and y distributions should show a smooth dome, without any horns or pentaquark-like peaks on it, and without the distributions looking very sliced-off at the edges.

• Make a log entry with the photograph of the polarized target run valve (hallbcam04)

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.

• How to get the strip charts:
  • For the beam: CS-Studio -> Beamline -> Strip Charts.
  • NEW!!! For the helicity trigger asymmetry strip chart: CS-Studio Tools -> Strip Charts -> livePlot. Type "B_DAQ:HEL:60m:fcup:asy" into the entry window on the LivePlot GUI, then select it. Then type "B_DAQ:HEL:60m:0:asy" into the entry window and select it as a 2nd plot to show.
  • right-click on the screen and select "Make Elog Entry", make sure to log to HBLOG and not ELOG
  • You can also see beam charts in the 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 for FToff Live Charge Collected Plots for FTon 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) Run Coordinators and Target Experts Instructions and List

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