The HPS Run Wiki

[edit]

• Shift Documentation
• Short Term Schedule
• Long Term Schedule
• Monitoring
• Phone Numbers

Phone Numbers Shift Schedule Shift-Taker's Checklist Hot Checkout Beam Time Accounting Run Spreadsheet 2019,2016, 2015 HPS Upgrade ERR COO, ESAD, RSAD Things to read before shift.

Procedures Commissioning Plans: Beamline Trigger ECal SVT Hodoscope SVT TOSP (1,2,3) Tunnel/Hall Access Power Failure

Manuals Harp Scans Beam Trip Runs SVT ECal (Annex) DAQ Beamline Turning Chicane ON/OFF Chicane Settings Manual Turning Chicane ON/OFF FSD Slow Controls

JLab Logbooks MCC Hall-A Hall-B Hall-C Hall-D

HPS 2019 run, June X to August Y'
Beam energy 4.5 GeV
Important: Document all your work in the logbook!
Bluejeans for Run Meetings on DAY and DAY at 2pm

RC: Tim Nelson

• (757) 575-7540
• 9 575 7540 from Counting Room

PDL: Valery Kubarovsky

• (757) 876-1789
• 9 876-1789 from Counting Room

* !! Chicane magnets can be energized only when the hall is in Beam Permit, [1]. Chicane magnets must be off if the hall is in Restricted or in Controlled access.

Run Plan June 27, 2019 Hot items: SVT DAQ work - takes precedence when needed, work will likely be sporadic SVT chiller swap - will need to coordinated with SVT activities that require powering hybrids Schedule and plans: Plan to re-establish beam to Hall B starting from settings two nights ago Expect few hours down in afternoon due to site-wide power exercise from 2-3 During down will coordinate SVT DAQ work with chiller swap. Cannot power SVT hybrids without chiller but testing can still be done with FEBs. When there is stable beam: Let SVT Experts shake out SVT DAQ SVT running - including moving the SVT in - is still expert only; don't try to run with the SVT on without an expert When no SVT work, take 2-cluster data with hps_v3_mult0_2gammas.trg at 150na with 4um target remember to do HARP scans of 2H01 and 2H02 every shift! Every Shift: Follow run plan as outlined by RC With any issue contact On-Call Experts or RC Perform 2H02A harp scan once per shift or when beam conditions have changed, based on beam monitors (BPMs, halo rates, beam-viewer). During harp scans, SVT must be retracted, HVs on SVT ECal and Hodoscope should be OFF. Note: Halo counter FSDs are masked, Beam current 30 nA, Orbit locks running. If 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. Check on white board all scalers, strip charts and monitoring plots that need to be logged regularly Document any beam condition change and send scaler GUIs to HBLOG Fill out BTA hourly. Click "Load from EPICS" to automatically fill the left side. Fill and submit the shift checklist in the logbook Important Notes: Do not run more than 60 minutes above 30 nA without the beam blocker in front of Faraday cup. Put beam blocker in for long running at high currents. For SVT Operations: From the time beam first comes into the hall until it is being delivered to the Faraday cup with orbit locks on for a known good trajectory, the SVT should be completely off. This is especially important during tuning to the tagger dump, when mis-steering of the beam can result in very high hard neutron backgrounds. Once stable beam is being delivered to the Faraday cup with orbit locks on for a known good trajectory, and the SVT collimator is in position, the FEBs and hybrids can be powered and operated, but the HV bias for the sensors must remain off. In order to turn on the HV, the FSD system must be functioning so a beam excursion that hits the collimator will quickly trip off the beam.

General Instructions Establishing Physics Quality Beam for HPS: Make sure SVT is retracted and detectors, SVT, Hodoscope and ECAL are OFF. First send beam to the tagger dump: Check that beam type is set to "Photon" (HPS_EPICS->Beam->BTA). Position "Blank" on the beam for the Hall-B collimator Ask MCC to turn ON the tagger magnet and then deliver <10 nA beam to the tagger dump. Check the beam position on the tagger viewer, it should be approximately in the center of the screen Follow instructions under "Procedures" on the documentation tab for "Beamline"[2]. To tune the beam on tagger dump and perform harp scans beam current should be <10 nA. Check profile using 2C21 and tagger (2C24) harp scans, and compare the positions and widths with previous scans ([3],[4]) Positions on both harps should be within 1mm Width on 2C21 should be <~0.1+/-0.05 mm Width on tagger harp (2C24) <~0.35 +/- 0.1mm Before sending a beam to the Faraday cup If HPS chicane must be ON, make sure that chicane GUI says "Chicane Ready" Check that SVT protection collimator is ON THE BEAM (2.82 mm) HPS target is OUT and Hodoscope and ECAL HVs are OFF SVT is OUT (position=0.000 mm in main hps scaler screen) and HV is off (all red/green indicators RED in SVT bias GUI) If any uncertainty, page the experts The first time sending a beam to the Faraday cup after the hall is closed, page the SVT expert. Pay attention into following corrector values: 2C22H, 2C23V, 2H00H, 2H00V, Compare them to ones that are in [5]. Make sure their values don't differ more than 100%. If there is such difference, tell MCC about this. Send beam to the Faraday cup If the beam optics is correct, then you should immediately see the beam spot on the Downstream Viewer and on 2H00 and 2H02 BPMS. If you don't see it immediately, and rates on halo counters are more than 100 Khz, then ask MCC, to change to pulsed (tune mode) beam, and ask to put corrector values. At this point don't accept any CW beam, until beam spot is visible on Downstream Viewer. If MCC operator is not able to tune the beam more than 30 minutes, then please notify RC Follow the instructions under "Procedures" on the documentation tab for "Beamline"[6] to establish beam to the electron dump. Note: in order to have reliable readings on two important for HPS BPMs, 2H00 and 2H02, beam current should be >30 nA. Ask MCC to establish 30 nA beam with HPS orbit locks on (We need HallBHPSOrb not HallBOrb configuration). For orbit lock positions on 2H00(X=3.90,Y=-0.30) and on 2H02(X=-1.20,Y=-0.3). Use the 2.82 mm SVT collimator. (positions changed 6/25/19 by mg). Tune beam profile at HPS using measured widths on 2H01A and 2H02A harps. The required beam profile at 2H02A harp is: X-width <~0.05 mm, Y-width <~ 0.05 mm. Beam profile using 2H01A and 2H02A harps with previous scans ([7],[8]) to compare. Check and log the beam spot on chromax viewer The halo counter rates before HPS must be low: Upstream Left and Right, and the tagger counters few Hz, Downstream counters should count <Hz/nA The halo counter rates on HPS, HPS-L/R/T/SC, depends on the collimator and HPS chicane settings, but should not be more than 100 Hz/nA [9] Positions on BPMs must be close to what they were before [10] Once all the above is achieved, turn ECAL and Hodoscope HV ON to monitor and log ECal rates Insert the 4um W target without turning off the beam. Before accepting beam, make sure all the previous conditions are met. Always read previous log entries, compare settings of BPMs and correctors with previous settings using scaler_hps GUI. Setting up the FSD threshold When you are about to calculate FSD limit, it means the beam is already established, and the target is in. To calculate the FSD threshold run the following executable hpsrun@clonpc11> /home/hpsrun/scripts/FSD/Calc_FSD_Threshold.exe Note we use 1 ms integration time and want 5.5 sigma away from the average rates Allowed tolerable rate increase default is 15%, if that causes many trips, then contact RC, he might suggest to increase that number Make sure if MCC operator set the FSD limit and integration time correctly

Every Shift: Follow run plan as outlined by RC If 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. Check on white board all scalers, strip charts and monitoring plots that need to be logged regularly Document any beam condition change and send scaler GUIs to HBLOG Fill out BTA hourly. Click "Load from EPICS" to automatically fill the left side. Fill and submit the shift checklist in the logbook Perform 2H02A harp scan once per shift or when beam conditions have changed, based on beam monitors (BPMs, halo rates, beam-viewer). During harp scans SVT must be retracted and HV should be OFF. With any issue contact On-Call Experts or RC

Every Run: After "Go": Check SVT Occupancy Update the Run Spreadsheet Log screenshots of: main scaler_hps display ECAL FADC rate gui Trigger rate gui SVT and ECAL Monitoring pdfs Put the output of the following command hpsTiStatus.sh into the logbook After each run execute this script (replace RunNb by the actual run number): hps2tapeAndDelete.sh RunNb All trigger files to be used by shifters are in HPS/Run2016

RC daily meetings at 2 pm in the counting-house 2nd-floor conference room.

BlueJeans Info:

URL: https://bluejeans.com/794825703

Meeting ID: 794825703

Run Coordinator June 12 - June 19 Stepan Stepanyan June 19 - June 26 Matt Graham June 26 - July 3 Tim Nelson July 3 - July 10 Takashi Maruyama July 10 - July 17 Stepan Stepanyan July 17 - July 24 Rafayel Paremuzyan July 24 - August 7 Maurik Holtrop August 7 - August 14 Raphael Dupre August 14 - August 21 Stepan Stepanyan Physics Division Liaison HPS-2019 Valery Kubarovsky

Beamline June 12 - June 19 Rafo Paremuzyan June 19 - July 29 Stepan Stepanyan July 29 - August 18 Rafo Paremuzyan SlowControls June 12 - Augus 19 Nathan Baltzell ECAL/HODOSCOPE June 12 - July 1 Nathan Baltzell July 1 - July 8 Raffaella DeVita July 8 - July 15 Rafayel Paremuzyan July 15 - July 22 Andrea Celentano July 22 - July 29 Rafayel Paremuzyan July 29 - August 5 Raphel Dupre August 5 - August 19 Gabriel Charles DAQ 24/7/365 Sergey Boyarinov

SVT June 01-05 Tim Nelson June 01-07 Cameron Bravo June 07-11 Omar Moreno June 12 Omar Moreno and Matt Solt June 12-19 Vitaliy Fadeyev June 13-18 Matt Solt June 19-26 Omar Moreno June 26-July 03 Cameron Bravo July 03-10 Tim Nelson July 10-17 Omar Moreno July 17-24 Cameron Bravo July 24-31 Tim Nelson July 31-August 07 Matt Graham August 07-14 Matt Solt August 14-21 Matt Solt

Webcams: Tagger Dump Faraday Cup SVT Chiller SVT Motors Alcove

Accelerator: Accelerator EPICS-WEB (offsite access) HPS EPICS-WEB (offsite access) End Station Status Accelerator Ops 1 Accelerator Ops 2 Accelerator White Board Schedule Accelerator OPS Documents

Slow Controls: HPS MYA Variables Hall B EPICS Database

Online & Offline: Monitoring Gui Run Database HPS Data Catalog Jenkins / Nexus / SVN Confluence Shift Docs @ GitHub

System/Person	Pager/Phone Number
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) 310-7198 (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