Run Coordinator: Lamiaa El Fassi (757) 575-7540
PDL: Nathan Baltzell (9-)757 876-1789 , x5902 office
Daily RC Meetings at 15:30: CH Room 200C, and on Zoom:
Link, Meeting ID: 1611984219, Passcode: RGD-RC23
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 to arrange replacements.
- Remote shift: If needed, worker shifts can be taken from off-site. 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!
Note to shift takers, please:
- Read the logbook, be aware of previous 24 hours
- Arrive at least 10 minutes early for shift change
- Refresh the run wiki pages; look over them every shift
- Follow the expert/worker shift instructions
- Communicate with your co-shift person
- The shift expert should know about and refer to logbook entries in their shift summary
- The shift worker should discuss an issue with the shift expert before making extra logbook entries
LE: Please don't change: Work in progress
Short-Term Schedule for the Week from Sept 13th to Sept. 20th, 2023
- Wednesday, Sept. 13th: shifts are canceled due to the target work and/or MCC beam/maintenance studies.
- Thursday, Sept. 14th: The current plan is to lock down the hall in the day shift and start tunning beam to the tagger dump in the swing/owl shift.
- Friday, Sept. 15th:
- If the beam is successfully tuned overnight to the tagger dump, take a 1.5-hour Moller run with new quadrupole power supply and tagger ramping/degaussing; Does Eugene (or another beamline expert?) need to be called for this?
- Start tuning beam to Faraday cup. It may take 2.5 hours to ramp up the solenoid and torus to full current. The solenoid will be gradually ramped up to half field intensity, then full, then the torus will be turned on and ramped up to full inbending current. During this process, keep an eye on the deflection on the viewer; Does Eugene (or another expert?) need to be consulted for this?
- In-bending torus field, 5-pass beam on ND3.
- Beam Current: 666 nA
- Run duration: 100M events or 4 hours, whichever comes first.
- CODA Configuration: PROD66
- Trigger file: rgd_300MeV_v1.0.trg
- If HWP is changed, start a new run
DAQ configuration
- Configuration is currently PROD66/TBD for RG-D, trigger file TBD for RG-D
- NOTE: UNLESS a RICH problem crashes the DAQ, do NOT interrupt an otherwise smooth run to make 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. Sometimes, it is the only way to know that a roc needs to be rebooted.
- 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 PROD6X and PROD6X_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
- "Cancel", "reset"
- "configure", "download", "prestart", "go"
- restart mon12
- After each step, make sure it is completed in the Run Control message window. If an 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.
Reference Values
FSD Thresholds from RG-C
- Upstream: 5 Hz
- Midstream: 2 kHz
- Downstream: 10 kHz
- BOM: 1 MHz
- 5 ms dwell time
Harp Scan References from RG-C
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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 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 cool down.
- Do not run more than 30 minutes above 30 nA with a 5-pass beam without the beam blocker in front of the 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 the beam is stable, keep them on even if you are not taking data.
- With any issue, contact On-Call Experts or RC - do not spend more than 15-20 min trying to fix the problem. If the phone is not answered, try the "Page Experts" button on top of CLASCSS.
- Check for and read any comments to log-book entries made during your shift!
Every Shift:
- Follow the run plan as outlined by RC
- If there is 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
- Upload spectra from clas12mon at the beginning and end of the shift and cross-check with reference spectra (make sure you select the SAME SECTOR for the reference plots on tabs with multiple sectors).
- Reset clas12mon every ~2 hours and inspect spectra (some detectors have buttons at the bottom to toggle between the sectors -- please check all of them).
- Fill and submit the shift checklist in the logbook
Every Run:
- Check values at the start of every run and log screenshots of:
- Main scaler GUI display
- Trigger rate GUI
- Beam strip charts
- FTC scalers
- At the start and end of every run, check that the data filled in the database run list is correct (especially fields that are filled in manually, like beam current and comments). This replaces the previously used spreadsheet.
To access the Hall:
- If you need to go down into Hall B, alert Denny Insley (757-897-9060, cell/text: 757-810-9576) and the Run Coordinator (757-575-7540).
- Check in with the shift personnel before entering the hall.
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