Difference between revisions of "The HPS Run Wiki"
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− | === | + | === Beam to FC (consult with RC with any problem): === |
− | # Follow the instructions under "Procedures" on the documentation tab for "Beamline"[https://wiki.jlab.org/hps-run/images/e/e6/HPS_beamline_comm.pdf] to establish beam to the electron dump. <b> Note: in order to have reliable readings on two important for HPS BPMs, 2H00 and 2H02, beam current should be >25 nA</b>. All studies should be done with beam currents between 25 nA and 30 nA. | + | # <!-- Follow the instructions under "Procedures" on the documentation tab for "Beamline"[https://wiki.jlab.org/hps-run/images/e/e6/HPS_beamline_comm.pdf] to establish beam to the electron dump.--> <b> Note: in order to have reliable readings on two important for HPS BPMs, 2H00 and 2H02, beam current should be >25 nA</b>. All studies should be done with beam currents between 25 nA and 30 nA. |
#* <b> Before moving forward with 2H02A harp scans and beam profile tune, stripline BPMs 2H00 and 2H02 must be calibrated and orbit lock must be operational.</b> At the moment 2H00 does not work and calibration of both is in question. Expert has been called in. If issue will not be resolved, still some parts of the program below can be executed if beam is not moving round much (can be manually controlled for slow drifts).+ | #* <b> Before moving forward with 2H02A harp scans and beam profile tune, stripline BPMs 2H00 and 2H02 must be calibrated and orbit lock must be operational.</b> At the moment 2H00 does not work and calibration of both is in question. Expert has been called in. If issue will not be resolved, still some parts of the program below can be executed if beam is not moving round much (can be manually controlled for slow drifts).+ | ||
# The required beam profile at 2H02A harp is: X-width <~0.25 mm, Y-width <~ 0.05 mm, and the tilt angle <15 degrees. Michael T. will come to work on improving Hall-B beam profile. If after few hours (before midnight) settle on some reasonable configuration when HPS-l/R are few 100 Hz. If beam profile is not exactly as required, but beam positions on 2H02 BPM are stable within 0.2 mm in X and 0.1mm in Y, the following still can be done: | # The required beam profile at 2H02A harp is: X-width <~0.25 mm, Y-width <~ 0.05 mm, and the tilt angle <15 degrees. Michael T. will come to work on improving Hall-B beam profile. If after few hours (before midnight) settle on some reasonable configuration when HPS-l/R are few 100 Hz. If beam profile is not exactly as required, but beam positions on 2H02 BPM are stable within 0.2 mm in X and 0.1mm in Y, the following still can be done: | ||
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#* Check that beam type is "Photon" on the BTA GUI (can be opened from "Beam" GUI). | #* Check that beam type is "Photon" on the BTA GUI (can be opened from "Beam" GUI). | ||
#* Check the beam position on the tagger viewer, it should be approximately in the centre of the screen | #* Check the beam position on the tagger viewer, it should be approximately in the centre of the screen | ||
− | #* Follow instructions under "Procedures" on the documentation tab for "Beamline"[https://wiki.jlab.org/hps-run/images/e/e6/HPS_beamline_comm.pdf]. To tune the beam | + | #* Follow instructions under "Procedures" on the documentation tab for "Beamline"[https://wiki.jlab.org/hps-run/images/e/e6/HPS_beamline_comm.pdf]. To tune the beam on tagger dump and perform harp scans beam current should be <10 nA. |
#* Check profile using 2C21 and tagger harp scans, and compare the positions and widths with previous scans ([https://logbooks.jlab.org/entry/3337615],[https://logbooks.jlab.org/entry/3337612]). Positions on both harps should be with +/- 1mm, widths on 2C21 should be <~0.1+/-0.05 mm, and on the tagger harp (2C24) <~0.35 +/- 0.1mm. | #* Check profile using 2C21 and tagger harp scans, and compare the positions and widths with previous scans ([https://logbooks.jlab.org/entry/3337615],[https://logbooks.jlab.org/entry/3337612]). Positions on both harps should be with +/- 1mm, widths on 2C21 should be <~0.1+/-0.05 mm, and on the tagger harp (2C24) <~0.35 +/- 0.1mm. | ||
− | #* Halo counters UPS-L/R and TAG-L/T/T2 should be ~ | + | #* Halo counters UPS-L/R and TAG-L/T/T2 should be ~few Hz/nA [https://logbooks.jlab.org/entry/3338763] |
<!-- # <b> While MCC degausses the tagger magnet, verify that chicane is ON</b> | <!-- # <b> While MCC degausses the tagger magnet, verify that chicane is ON</b> | ||
#* If not, turn it on. Strictly follow the procedure in the beam line manual!--> | #* If not, turn it on. Strictly follow the procedure in the beam line manual!--> |
Revision as of 15:40, 7 February 2016
[edit]
HPS 2016 run, February 4 to March 14, weekends only.
Shifts are manned from Friday 3pm to 7am on Monday.
Beam energy 2.3 GeV (1 pass).
Important: Document all your work in the logbook!
Spring 2015 Final @ 1 GeV:
Phone NumbersShift ScheduleShift-Taker's ChecklistHot CheckoutBeam Time AccountingRun Spreadsheet 2016, 2015 |
Procedures
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Manuals |
JLab Logbooks
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RC: Stepan Stepanyan (Bluejeans info for Run Meetings on Thursdays and Fridays at 3pm)
- (757) 575-7540
- 9 575 7540 from Counting Room
PDL: Harut Avagyan
Run Plan for February 5 - 7, 2016:Beam to FC (consult with RC with any problem):
Miscellaneous Notes:
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General Instructions:Locking up the hall on Fridays
Acceptable Beam Conditions:
Recovering from beam trips when running SVT at 0.5 mm:
Every Shift:
Every Run:
Setting up Chicane for E=2.3 GeV:Note: This requires Beam Permit and NO beam to HPS / Faraday Cup.
SVT Instructions:
ECAL Instructions:
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Webcams:
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Accelerator: |
Slow Controls:
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Online & Offline: |
System/Person | Pager/Phone Number |
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Run Coordinator | (757) 575-7540 (cell) |
Physics Div. Liaison | (757) 876-1789 (cell) |
MCC-OPS | 7048 |
Crew Chief | 7045 |
Crew Chief | 9-879-3367 (cell) |
Program Deputy | 9-876-7997 (cell) |
Gate House Guard | 5822 |
DAQ/Online | (757) 869-2188 (cell) |
SVT | (757) 541-7539 (cell) |
ECAL | (757) 810-1489 (cell) |
Slow Controls | (757) 748-6922 (cell) |
Beamline | (757) 303-3996 (cell) |
Engineering | (757) 748-5048 |
Hall-B Floor | 5165 |
Hall-B Space Frame | 5170, 5171 |
Hall-B Forward Carriage | 5371 |
Hall-B Counting Room | 5126, 5244, 5246, 5247 |
Hall-B Gas Shed | 7115 |