Run Group B

[edit]

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

Shift Schedule Shift Checklist Hot Checkout Beam Time Accounting See guidance for BTA in Beam Time Accounting User Guide.

Manuals DC FTOF ECAL LTCC HTCC RICH: expert novice CTOF CND SVT MVT MVT turn on procedure FT Beamline Torus Power-Up and Power-Down Procedure Solenoid Power-Up and Power-Down Procedure Cryo Target Operation manual DAQ Slow Controls

Procedures Establishing Physics-Quality Beam Performing Møller Runs Performing Harp Scans Tunnel/Hall Access DAQ Quick Reference/Recovery

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

RC schedule Jan 26 - Feb 6: S. Niccolai Feb 6 - Feb 13: Y. Ilieva Feb 13 - Feb 20: S. Stepanyan Feb 20 - Feb 27: F. Hauenstein Feb 27 - Mar 6: S. Niccolai Mar 6 to Mar 12: J. Gilfoyle Mar 12 to Mar 19: V. Kubarowsky

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
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CLAS12 Run Group B, spring 2019
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)

RC: Silvia Niccolai

• (757) 575-7540
• 9 575 7540 from Counting Room
• silvia@jlab.org

PDL: Maurizio Ungaro

• (757) 876-1789
• 9 876-1789 from Counting Room
• ungaro@jlab.org

Initial Run Plan: (last update 1/30/2019- 8:30 AM) Torus and solenoid should be energized. Restore beam to the hall, following the procedures described in [1]. In summary: Beam to Tagger dump Tagger magnet ON All detectors must be OFF (except FTOF) Halo counters must be ON and MASKED Blank collimator must be IN Torus and solenoid energized Low beam current (<10 nA) Check beam quality using harp scans 2C21 and 2C24. When the beam quality is acceptable, take a Moeller run to verify polarization, following procedures [2] If the polarization is acceptable (>=85%), send beam back to Faraday cup. If not, a spin-dance may be necessary to find the Wien angle maximizing our polarization. Beam to Faraday cup tell MCC that beam is acceptable at the tagger ask to take the beam away, degauss and turn OFF the tagger magnet position 20 mm diameter collimator on the beam ask ops to unmask halo counter FSDs and set the halo counter FSD thresholds as defined in the run wiki and with the integration time interval to 5 milliseconds when ready ask MCC to send ∼ 5 nA beam straight to the electron dump (downstream end of the Hall B beamline where Faraday cup is located). Note: upstream and midstream halo counter rates should not exceed 100 Hz. check beam quality using the 2H01 harp scan It may be necessary to check the alignment of beam with respect to the target and CLAS12, according to the procedures in [3]: ask MCC operator to move the beam vertically on 2H01 nA BPM in 0.1 mm steps up then down record rates on halo counters and on BOM for each step. Stop moving in the given direction when rates go more more than ×10 from the previous position analyze rates as a function of position, find a position on 2H01 corresponding to about the mid point of the two extreme highest rate ends. Ask MCC operator to position the beam on that position on 2H01 nA BPM repeat everything for the horizontal alignment, moving the beam to left and right find the best horizontal position set orbit locks using the found vertical and horizontal positions on 2H01 nA BPM Turn all detectors ON. Trigger validation studies: random trigger run and/or run with trigger without roads? How long will this take? One shift? All this will be established in this Friday's meeting Data taking: current scan checking data rates (details will be established before beam is back). Then production data taking once optimal current is determined.

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. 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. Fill and submit the shift checklist in the logbook 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

• 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 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 bad beam tune or bleed-through from other Halls.

• Note 2: At the end of each run, follow the standard DAQ restart sequence

"end run", "cancel", "reset", then if the run ended correctly, "download", "prestart", "go". If the run did not end correctly or if any ROCs had to be rebooted, "configure", "download", "prestart", "go".

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: 2C24A (X=0.2 mm, Y=0.2 mm) , 2H01 (X=0.3 mm, Y=-0.9 mm)

• Note 4: Do not turn OFF FTOF HVs, even during the beam tune with CW beam (turn off when doing a Moller run or if there is tuned/pulsed beam in the upstream beamline)

• Note 5: 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 separate log entry with copies to HBTORUS and HBSOLENOID logbooks. In the "Notify" field add Ruben Fair, Probir Goshal, Dave Kashy and esr-users@jlab.org
  4. Notify Run Coordinator
  5. Turn off all detectors

• Note 6: When 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 7: Any request for a special run or change of configuration has to be approved by the RC & documented

• Note 8: Carefully check the BTA every hour and run the script btaGet.py to print for you what HAS TO BE in BTA for this hour. Edit BTA if it is incorrect.

• Note 9: Reset CLAS12MON frequently to avoid histogram saturation.

• Note 10: Shift workers must check the occupancies! Use this tool to compare to previous runs: https://clas12mon.jlab.org/mon12/histograms/

• Note 11 Do not Turn OFF MVT HV: Instead go to 'Restore settings' from the MVT overview screen:
  1. SafeMode.snp for beam tuning and Moeller runs
  2. MV_HV_FullField.snp for full solenoid field
  3. MV_HV_MidField.snp wgeb solenoid < 4T

• NOTE 12 Check the vacuum periodically, make sure vacuum id not higher than 5e-5

• NOTE 13 Always reset the CFD threshold after all power off/on on the CND CAMAC crate

After the CAMAC crate (camac1) holding the CND CFD boards is switched off for any reason, it is mandatory to reset the associated thresholds typing the following command from any clon machine terminal: $CODA/src/rol/Linux_x86_64/bin/cnd_cfd_thresh -w 0

If this command is failing and the crate is not responding, reboot it as follows: roc_reboot camac1

• NOTE 14: As of 10/25, the issue of detector scalers being frozen and starting a new run has been resolved. Shift workers should anyway check routinely scalers to verify they update correctly and make a logbook entry if anomalies are observed after starting a new run.

• NOTE 15: To solve common SVT issues see https://logbooks.jlab.org/entry/3615766

Webcams Faraday Cup Beam Viewer Tagger Beam Dump Viewer CND CAMAC Crate Hall Fisheye Saclay Cryotarget

Manuals CED Manual MON12 Manual off-line Manual

Epics on the web WebOPI (CUE Login)

Hall-B Operation Safety Procedures RCDB Run Group B Wiki CLAS12 mon page Comparison between mon12 histograms (last 5 runs) Accumulated datasize Accumulated charge

Accelerator Accelerator Whiteboard Program Deputy Shift Plans Run Coordinator Reports Accelerator daily meetings notes (by Mauri) [4]

Bluejeans meetings Daily Run meeting 502085879 RGB meeting 2488723183