Difference between revisions of "The HPS Run Wiki"
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=== * Please close any GUI that is not being used, e.g. close harp scanner after harp scan is done, close chicane, after chicane is ON, etc. === | === * Please close any GUI that is not being used, e.g. close harp scanner after harp scan is done, close chicane, after chicane is ON, etc. === | ||
− | === * <b>For orbit lock positions on <font color=red>2H00(X=0.3,Y=-1.) and on 2H02(X=-2. | + | === * <b>For orbit lock positions on <font color=red>2H00(X=0.3,Y=-1.) and on 2H02(X=-2.7,Y=-0.9). Use the 2.82 mm SVT collimator </font></b> === |
Before 9/9 this was: 2H00(X=0.3,Y=-1.) and on 2H02(X=-2.4,Y=-1.). Use the 2.82 mm SVT collimator | Before 9/9 this was: 2H00(X=0.3,Y=-1.) and on 2H02(X=-2.4,Y=-1.). Use the 2.82 mm SVT collimator | ||
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* If SVT is not ready, take FEE runs with ECal, 8 um target 150 nA. Each run 4 hours long, PROD77-NOSVT | * If SVT is not ready, take FEE runs with ECal, 8 um target 150 nA. Each run 4 hours long, PROD77-NOSVT | ||
* When MCC is ready, perform beam tune to get read of the beam tails, call Stepan on RC phone --> | * When MCC is ready, perform beam tune to get read of the beam tails, call Stepan on RC phone --> | ||
− | * Take production data: 120 nA beam on the 20 um W target, PROD77 configuration, production trigger (see | + | * Take production data: 120 nA beam on the 20 um W target, PROD77 configuration, production trigger (see the whiteboard) |
* Special runs: | * Special runs: | ||
− | ** Short Moller run, ~ 1 hour with Moller trigger only. Moller trigger prescale changed to give 24 kHz trigger rate for 60 nA of beam. | + | ** Short Moller run, ~ 1 hour with Moller trigger only. Moller trigger prescale changed to give 24 kHz trigger rate for 60 nA of the beam. |
** Random Trigger run, ~ 2 hour run at full luminosity ( 120 nA), with Faraday Cup and Pulser trigger only, changed to give 24 kHz trigger rate. | ** Random Trigger run, ~ 2 hour run at full luminosity ( 120 nA), with Faraday Cup and Pulser trigger only, changed to give 24 kHz trigger rate. | ||
− | * Monday around | + | * Monday around 6 am (maybe a bit earlier) the beam will be taken away to set up Hall-D. This is very likely to go well into swing shift and may spill over into the owl shift. |
===Hall Access Items:=== | ===Hall Access Items:=== | ||
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# During harp scans, SVT must be retracted (motors/SVT Positioners). HVs on SVT, ECal and Hodoscope should be OFF. | # During harp scans, SVT must be retracted (motors/SVT Positioners). HVs on SVT, ECal and Hodoscope should be OFF. | ||
− | # Halo counter FSDs (Downstream, HPS Up and HPS Down) are masked, Beam current 100 nA, Orbit locks running. | + | # Halo counter FSDs (Downstream, HPS Up, and HPS Down) are masked, Beam current 100 nA, Orbit locks running. |
# Perform the HARP scan, log the results. | # Perform the HARP scan, log the results. | ||
# If the beam looks different, you should call beam-line on-call that will advise on the next steps. | # If the beam looks different, you should call beam-line on-call that will advise on the next steps. | ||
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#* Follow the instructions under "Procedures" on the documentation tab for "Beamline"[https://wiki.jlab.org/hps-run/images/1/1e/HPS_beam_estab.pdf] to establish beam to the electron dump. | #* Follow the instructions under "Procedures" on the documentation tab for "Beamline"[https://wiki.jlab.org/hps-run/images/1/1e/HPS_beam_estab.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 >30 nA.</b> | <b> Note: in order to have reliable readings on two important for HPS BPMs, 2H00 and 2H02, beam current should be >30 nA.</b> | ||
− | #* Ask MCC to establish 30 nA beam with <font color=red>HPS</font> orbit locks on (We need '''HallBHPSOrb''' not '''HallBOrb''' configuration). <b>For orbit lock positions on <font color=red>2H00(X=0.3,Y=-1.) and on 2H02(X=-2. | + | #* Ask MCC to establish 30 nA beam with <font color=red>HPS</font> orbit locks on (We need '''HallBHPSOrb''' not '''HallBOrb''' configuration). <b>For orbit lock positions on <font color=red>2H00(X=0.3,Y=-1.) and on 2H02(X=-2.7,Y=-0.9). Use the 2.82 mm SVT collimator. (positions changed 6/25/19 by mg)</font></b>. |
#* Tune beam profile at HPS using measured widths on 2H01A and 2H02A harps. The required beam profile at 2H02A harp is: X-width <~0.1 mm, Y-width <~ 0.05 mm. Beam profile using 2H01A and 2H02A harps with previous scans ([https://logbooks.jlab.org/entry/3696650],[https://logbooks.jlab.org/entry/3903891]) to compare. | #* Tune beam profile at HPS using measured widths on 2H01A and 2H02A harps. The required beam profile at 2H02A harp is: X-width <~0.1 mm, Y-width <~ 0.05 mm. Beam profile using 2H01A and 2H02A harps with previous scans ([https://logbooks.jlab.org/entry/3696650],[https://logbooks.jlab.org/entry/3903891]) to compare. | ||
#* Check and log the beam spot on chromax viewer | #* Check and log the beam spot on chromax viewer |
Revision as of 14:46, 11 September 2021
Phone NumbersShift ScheduleShift-Taker's ChecklistHot CheckoutBeam Time AccountingRun Spreadsheet 2021 2019,2016, 20152019 HPS production triggers descriptionsCOO, ESAD, RSAD Things to read before shift.Expert shift - refresher video demoRemote worker shift - requirements and responsibilitiesHPS 2021 Run discription and beam parameter requirements |
Procedures
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Manuals |
JLab Logbooks
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HPS (E12-11-006) 2021 run, August - October'
Beam energy 3.74 GeV
Important: Document all your work in the logbook!
Bluejeans for Run Meetings on DAY and DAY at 3 pm
RC: Maurik Holtrop
- (757) 575-7540
- 9 575 7540 from Counting Room
- Personal cell: +1 (207) 535-7037
PDL: Valery Kubarovsky
- (757) 876-1789
- 9 876-1789 from Counting Room
Important instructions
* Turn OFF beam before target move!
* No access to the alcove if the chicane magnet beacon is ON.
Chicane magnets must be OFF if the hall is in Controlled access and access to the alcove is needed or when the hall is in Restricted access. If Chicane magnets are OFF, they can be energized only when the hall is in Power or Beam Permit, [1].
* TURN OFF the chicane magnet if beam is not available due to a thunderstorm. Loss off power would seriously damage detectors.
* Fill out BTA hourly. Click "Load from EPICS" to fill the left side, then make sure numbers are correct. If needed edit the entry.
NO ABUs or BANU if beam tune is in progress, make it all BNA with ER 100%. At the end of the shift save BTA to the logbook!
* Please close any GUI that is not being used, e.g. close harp scanner after harp scan is done, close chicane, after chicane is ON, etc.
* For orbit lock positions on 2H00(X=0.3,Y=-1.) and on 2H02(X=-2.7,Y=-0.9). Use the 2.82 mm SVT collimator
Before 9/9 this was: 2H00(X=0.3,Y=-1.) and on 2H02(X=-2.4,Y=-1.). Use the 2.82 mm SVT collimator
Run Plan September 10 - 11, 2021
Hall Access Items:
Every Shift:
Every Run:
SVT Bias Currents:Shifters must pay attention to the L0 bias currents. This is on both the SVT motor GUI and the main bias GUI. The bias currents will slowly creep up over the course of a run. When the bias current is between 15-20 uA for either L0 sensor, do the following:
Do not let the bias current exceed 20 uA. It takes about 4-5 hours for the bias currents to creep up to those values. Call SVT expert if unsure. Harp Scan Procedure:
Important Notes:
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General InstructionsEstablishing Physics Quality Beam for HPS:
Note: in order to have reliable readings on two important for HPS BPMs, 2H00 and 2H02, beam current should be >30 nA.
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RC daily meetings at 3 pm in the counting-house 2nd-floor conference room.
BlueJeans Info:
URL: https://bluejeans.com/759437905/8110
Meeting ID: 759437905
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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) 329-4844 (cell) |
ECAL/Hodo | (757) 310-7198 (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 | 5244(Shift1), 5245(Shift2) |
Hall-B Counting Room | 5247(Expert), 5502(Target) |
Hall-B Counting Room | 5246(RC1), 5126(RC2) |
Hall-B Gas Shed | 7115 |
Overview
Tasks
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Shift Worker Backup TableTo add your name, edit this wiki page or send email to Maurik or Nathan.
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