The HPS Run Wiki
Important Phone NumbersShift ScheduleShift-Taker's Checklist (old)Hot CheckoutBeam Time Accounting |
Procedures |
Manuals |
JLab Logbooks
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RC: John Jaros
PDL: Stepan StepanyanEvery Shift:
SVT InstructionsBefore sending beam to Faraday cup, verify (and page expert if otherwise):
The first time sending beam to the Faraday cup after the hall is closed, page the SVT expert.
Acceptable Beam Conditions:Before accepting beam, make sure all the conditions are met - beam profile and halo rates are what you expect (or very close to it). If unsure call to RC, PDL, or beamline expert!
Always read previous log entries, compare settings of BPMs and correctors with previous settings using scaler_hps GUI. Every Run:
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DO NOT RUN MORE THAN 30 MINUTES ABOVE 50 nA WITHOUT THE BEAM BLOCKER Run Plan:March 23-24, 2015 (day/swing/owl)Overview: Very bad beams last night. We need better standards for what is acceptable at 2C21 and 2C24, and upstream halo counters before sending beam downstream to the dump. Please read ACCEPTABLE BEAM CONDITIONS on this page. We returned to tagger and MCC will work on calibrating upstream BPMs. Tief will work on optics matching starting 1PM today. We will not open on Tuesday (TUESDAY DAY SHIFT IS ON). We may on Wednesday, TBD. Program: 1) MCC retunes upstream beam and calibrates BPMs; (2) MCC works on beamline optics, hopefully restoring beams to alcove when complete;(3) when have decent beams to alcove, try to have MCC calibrate downstream BPMs;(4)get good spot on Chromax, low counts on halo counters, and then set-up chicane. 5) scan target vertically and horizontally, halo rates vs target (5) Take data. Subsystem commissioning studies: more trigger commissioning studies, SVT commissioning.
MCC works on beam optics and matching, and tunes beam to tagger
Standards are on this page: ACCEPTABLE BEAM CONDITIONS.
Restore Beam to the Hall-B Faraday cup Dump and Setup HPS.
Energize Chicane
Be very careful when changing magnet currents when beams are on. Must enter new current ACCURATELY. Small steps only.
Subsystem Commissioning Studies. Begin Data Taking.
Turn beams over to MCC during day shift March 23 for bpm calibration
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Slow Controls: |
Accelerator:
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