Difference between revisions of "The HPS Run Wiki"
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<b> 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! </b> | <b> 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! </b> | ||
* Beam optics setting is such that at 2H02A harp the beam profile will be as requested by HPS,[https://logbooks.jlab.org/entry/3326814 wide in X-direction and narrow in Y]. | * Beam optics setting is such that at 2H02A harp the beam profile will be as requested by HPS,[https://logbooks.jlab.org/entry/3326814 wide in X-direction and narrow in Y]. | ||
− | * This optics setting will make the beam profile at 2C21 harp narrow in [https://logbooks.jlab.org/entry/3326718 both directions], while profile on the "tagger" or 2C24 harp wide in both directions. | + | * This optics setting will make the beam profile at 2C21 harp narrow in [https://logbooks.jlab.org/entry/3326718 both directions], while profile on the "tagger" or 2C24 harp wide in [https://logbooks.jlab.org/entry/3326718 both directions]. |
+ | * The halo counter rates must be as follows | ||
</font> | </font> | ||
Revision as of 11:01, 23 March 2015
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!
Every Run:
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DO NOT RUN MORE THAN 30 MINUTES ABOVE 50 nA WITHOUT THE BEAM BLOCKER Run Plan:March 22-23, 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. We returned to tagger and MCC will work on calibrating upstream BPMs. Tief will work on optics matching starting 1PM today. Expect to open hall Tuesday AM, but this is still being dicussed. 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
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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Webcams:
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Slow Controls: |
Accelerator:
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Offline: |