Difference between revisions of "The HPS Run Wiki"

Revision as of 14:51, 29 August 2019

COO, ESAD, RSAD Adendum to 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

JLab Logbooks

HPS (E12-11-006) 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: Cameron Bravo

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

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=1.0,Y=1.5) and on 2H02(X=-1.65,Y=-0.3). Use the 2.82 mm SVT collimator

Run Plan August 29 - September 3, 2019

Establishing Physics Quality Beam for HPS:

Make sure SVT is retracted and detectors, SVT, Hodoscope and ECAL are OFF.
If the beam was off for 4 hours or more or in case of troublesome beam tuning, send a 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 <~0.2+/-0.05 mm
  - Width on tagger harp (2C24) <~0.5 +/- 0.1mm
- Background levels on harp scan are comparable to those of previous scans.
Before sending a beam to the Faraday cup
- If HPS chicane must be ON, make sure that chicane GUI says "Chicane Ready"
- Set Hall-B Collimator to 20 mm.
- Check that SVT protection collimator is ON THE BEAM (2.82 mm). If the beam was off for more than 4HPS hours or the configuration has changed, start with 3.94 mm
- HPS target is OUT and Hodoscope and ECAL HVs are OFF
- SVT is OUT (position=0.000 mm on the main HPS scaler GUI) and bias HV is off (all red/green indicators RED in SVT bias GUI)
- If any uncertainty, page the experts
- 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 the 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 restore 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 15 minutes, then 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=1.0,Y=1.5) and on 2H02(X=-1.7,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 <~0.1 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 very low:
  1. Upstream Left and Right, and the tagger counters few 10's of Hz,
  2. Downstream counters should count <Hz/nA
  3. 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 50 Hz/nA [9]
- Positions on BPMs must be close to what they were before [10]
- When everything is stable, perform SVT wire scan and compare with the nominal [11]
- Once all the above is achieved, turn ECAL and Hodoscope HV ON to monitor and log ECal rates
- Insert the 20 um W target (turn beam off first).
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.

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

BlueJeans Info:

URL: https://bluejeans.com/794825703

Meeting ID: 794825703

Status of the run

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 19	Raphael Dupre
August 19 - 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:

Accelerator:

Slow Controls:

Online & Offline:

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	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

@@ Line 121: / Line 121: @@
 <!-- * <b>Schedule and plans:</b>
-# Establish beam for HPS (see instructions on the right column)-->
+# Take production data with PROD66 (PROD67) / hps_v11_6.trg 20um target at 120 nA, HPS collimator 2.82 mm. Length of the run will be defined by the SVT bias currents, but no longer than 4 hours.
-*Take production data with PROD66 (PROD67) / hps_v11_6.trg 20um target at 120 nA, HPS collimator 2.82 mm. Length of the run will be defined by the SVT bias currents, but no longer than 4 hours.
+# If peaks are visible make a log entry with the graph.
-** After run starts run the script "ben-trigger-structure.sh [CURRENT RUN NUMBER]" on any clonPCs and make sure pop-up graph shows continuous decanting distribution, without any periodic peaks (bumps). If peaks are visible make a log entry with the graph.
 # Then continue production data taking
-# Take random trigger data, 1 run for 300M events: PROD66 (PROD67) / hps_v6_random_30khz.trg 20um target at 120 nA, HPS collimator 2.82 mm -->
+# Take random trigger data, 1 run for 300M events: PROD66 (PROD67) / hps_v6_random_30khz.trg 20um target at 120 nA, HPS collimator 2.82 mm
+# Then continue production data taking
-<!-- * Beam will be down on Thursday, August 22, ~ 8am for Hall-A wWein angle change:
+# Do a beam profile check once a day, at 9 am, using 2H02 and SVT wire harps
-# At 6:45 am turn off the chicane and  call beamline expert to setup for straight track run
+# Take all the data!
-# After beam is off, SVT expert will cool down SVT to -20 C and perform a basline run -->
-* Do beam profile check ones a day, at 9 am, using 2H02 and SVT wire harps
 ==Every Shift:==
 # Follow run plan as outlined by RC

Difference between revisions of "The HPS Run Wiki"

Revision as of 14:51, 29 August 2019

Phone Numbers

Shift Schedule

Shift-Taker's Checklist

Hot Checkout

Beam Time Accounting

Run Spreadsheet 2019,2016, 2015

HPS Upgrade ERR