Difference between revisions of "The HPS Run Wiki"

Revision as of 14:14, 1 April 2016

Procedures

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

Manuals

JLab Logbooks

HPS 2016 run, February 4 to April 25, Weekends Only
Shifts are manned from Friday 2pm to Monday 7am
Beam energy 2.3 GeV (1 pass)
Important: Document all your work in the logbook!

Bluejeans for Run Meetings on Thursdays and Fridays at 2pm

RC: Stepan Stepanyan

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

PDL: Harut Avakian

Run Plan for April 1 - 25, 2016 (every weekend):

Start close-up of the Hall at 3pm on Friday, April 1

See General Instructions on the right for details

When hall is closed, and regular shifts began, turn on the chicane

Establish beam to the tagger dump

See "General Instructions" on the right for details
Log screenshots of the ECal and main HPS scaler screens for reference when beam is established at the tagger

Bring beam to FC:

Note: in order to have reliable readings on two important for HPS BPMs, 2H00 and 2H02, beam current should be >30 nA. Before moving forward with 2H02A harp scans and beam profile tune, make sure orbit lock is engaged at positions on 2H00(X=0.00,Y=0.00) and on 2H02(X=-1.00,Y=-0.85).
Important Note: Before bringing beams to the FC, be sure that the SVT and ECal are off, the SVT fully retracted, the target out, and the 2.82 mm SVT collimator is in. All beam studies should be done in these conditions with beam currents of 30 nA.
Establish beam to the Faraday cup following the "General Guidelines" on the right. The required beam profile at 2H02A harp is: X-width <~0.25 mm, Y-width <~ 0.050 mm, and the tilt angle <15 degrees. The spot on the Chromax viewer should be close to x=-2mm, y=-5mm.
Restore ECal and Trigger
- Turn on ECal
- Record FADC rates with and without the 4 um target at 200 nA.
  - Agree with last weekend (4 um, No Target)?
- Call ECal expert to perform pedestal run
- Trigger/DAQ expert checks trigger rates, DAQ, and deadtime with 200 nA beam on 4 um target. Record:
  1. main scaler screen
  2. ecal scaler gui
  3. trigger rate gui (requires DAQ Prestarted with v8_200nA.trg)
    - Dead time should be >~90%
    - Total Trigger rate should be ~20 kHz.
SVT Setting (call SVT expert in)
- If beams are stable, SVT expert moves SVT to 1.0 and then 0.5 mm
- record occupancy, latency, data size, and deadtimes
Record Production Data with 4um target @ 200 nA
- Use Configuration HPS35 and Trigger v7_200nA.trg.
- 150 Million events per run
- Be sure to follow General Guidelines, especially instructions for Every Shift and Every Run below.
- Monitor and record BPM 2H02 history carefully to insure stable beams.
  - If beams are not stable, get MCC to fix it!
- Document any beam condition change and send scaler GUIs to HBLOG
Special (to be scheduled by RC)
- 3.93 mm collimator
  Scan to center it (update epics records)
  
  Empty target run to compare rates with 2.82 mm collimator
- ~~Quick no-collimator rate measurement~~

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.

SVT RECOVERY PROCDURES

General Instructions:

DAQ RECOVERY

If DAQ crashed/broken:

Reboot DAQ completely..
If the procedure fails to restore DAQ, call Sergey (DAQ on call) without any further disturbing the DAQ status.

Locking up the hall on Fridays

At 2pm check the status of the activities in the hall and notify RC if there are potential delays for the lockup at 3pm.
Work with the hall work coordinator (Doug Tilles or his designee) to make sure hall is ready for sweep at around 3pm:
- Vacuum is good, magnet power supplies are turned ON and in remote mode, LCW is on.
Make sure experts, beamline, ECal, SVT, and slow controls, checked their systems before the lockup.
When ready notify MCC to start sweep and lockup of the hall.
Make sure all necessary monitoring GUIs are up and running.
Make sure beam viewer screens are up.
When hall reaches "Beam Permit":
- turn on the chicane
- Turn SVT completely OFF (Bias, FEB, Flange)

Establishing Acceptable Beam Conditions:

Make sure SVT is retracted and both SVT and ECAL are OFF.
First send beam to the tagger dump:
- Check that beam type is set to "Photon" (HPS_EPICS->Beam->BTA).
- Ask MCC to turn ON the tagger magnet and then deliver <10 nA beam.
- 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"[1]. 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 ([2],[3])
  - 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
- Halo counters UPS-L/R and TAG-L/T/T2 should be ~few Hz/nA [4]
Before sending beam to the Faraday cup
- Check that chicane GUI says "Chicane Ready"
- Check that SVT protection collimator is ON
- HPS target is OUT and ECAL HV is 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 beam to the Faraday cup after the hall is closed, page the SVT expert.
Send beam to the Faraday cup
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 50 nA beam with HPS orbit locks on (We need HallBHPSOrb not HallBOrb configuration). For orbit lock positions on 2H00(X=0.00,Y=0.00) and on 2H02(X=-1.00,Y=-0.85). Use the 2.82 mm SVT collimator. .
- Tune beam profile at HPS using measured widths on 2H02A harp. The required beam profile at 2H02A harp is: X-width <~0.25 mm, Y-width <~ 0.10 mm for commissioning, and Y-width ~0.05 for physics running, and the tilt angle <15 degrees.
- Check and log the beam spot on chromax viewer
- The halo counter rates before HPS must be low:
  1. UPS-L and UPS-R few Hz/nA,
  2. The tagger counters should count less than Hz/nA and 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 100 Hz/nA [5]
- Positions on BPMs must be close to what they were before [6]
- Once all the above is achieved, turn ECAL 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.

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)
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
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

Spring 2016 @ 2 GeV:

.

Run Coordinator
Feb 3 - Feb 10	Stepan Stepanyan
Feb 10 - Feb 17	Takashi Maruyama
Feb 17 - Feb 24	John Jaros
Feb 24 - Mar 2	Raphaël Dupré
Mar 2 - Mar 9	Nathan Baltzell
Mar 9 - Mar 16	Maurik Holtrop
Mar 17 - Mar 24	Stepan Stepanyan
Mar 24 - Mar 30	Valery Kubarovsky
Mar 30 - Apr 6	Stepan Stepanyan
Apr 6 - Apr 15	Rafayel Paremuzyan
Apr 15 - Apr 20	John Jaros
Apr 20 - Apr 25	Valery Kubarovsky

Physics Division Liaison
Feb 3 - Mar 16	Harut Avagyan

Beamline
Feb 4 - Feb 10	F.X. Girod
Feb 10 - Feb 17	Stepan Stepanyan
Feb 17 - Feb 24	Rafo Paremuzyan
Feb 24 - Mar 2	Clive Field
Mar 2 - Mar 9	Takashi Maruyama
Mar 9 - Mar 16	John Jaros
Mar 16 - Apr 6	Stepan Stepanyan
Apr 6 - Apr 18	Rafayel Paremuzyan
Apr 18 - Apr 25	Stepan Stepanyan

SlowControls
Feb 4 - Feb 11	Stepan Stepanyan
Feb 12 - Feb 18	Sho Uemura
Feb 19 - Feb 25	Bryan McKinnon
Feb 26 - Mar 10	Hovanes Egiyan
Mar 11 - Apr 21	Nathan Baltzell
Apr 21 - Apr 25	Hovanes Egiyan

ECAL
Feb 2 - Feb 9	Holly Vance
Feb 9 - Feb 16	Nathan Baltzell
Feb 16 - Feb 23	Raphaël Dupré
Feb 23 - Mar 1	Andrea Celentano
Mar 1 - Mar 15	Gabriel Charles
Mar 17 - Apr 20	Nathan Baltzell
Apr 20 - Apr 25	Holly Vance

SVT
Feb 4 - Feb 12	Matt Graham
Feb 12 - Feb 19	Sho Uemura
Feb 19 - Feb 26	Matt Solt
Feb 26 - Mar 4	Vitaliy Fadeyev
Mar 4 - Mar 14	Tim Nelson
Mar 17 - Mar 28	Matt Solt

DAQ
24/7/365	Sergey Boyarinov

Spring 2015 Final @ 1 GeV:

.

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) 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

@@ Line 112: / Line 112: @@
 == Bring beam to FC: ==
 # '''Note: in order to have reliable readings on two important for HPS BPMs, 2H00 and 2H02, beam current should be >30 nA. Before moving forward with 2H02A harp scans and beam profile tune, make sure orbit lock is engaged at positions on 2H00(X=0.00,Y=0.00) and on 2H02(X=-1.00,Y=-0.85). '''
-# '''<font color=red> Important Note: Before bringing beams to the FC, be sure that the SVT and ECal are off, the SVT fully retracted, the target out,  and the 2.82 mm SVT collimator is in. All beam studies should be done in these conditions with beam currents of 50 nA.</font>'''
+# '''<font color=red> Important Note: Before bringing beams to the FC, be sure that the SVT and ECal are off, the SVT fully retracted, the target out,  and the 2.82 mm SVT collimator is in. All beam studies should be done in these conditions with beam currents of 30 nA.</font>'''
 # Establish beam to the Faraday cup following the "General Guidelines" on the right.  The required beam profile at 2H02A harp is: X-width <~0.25 mm, Y-width <~ 0.050 mm, and the tilt angle <15 degrees. The spot on the Chromax viewer should be close to x=-2mm, y=-5mm.
 # Restore ECal and Trigger
@@ Line 122: / Line 122: @@
 #*# ''main scaler screen''
 #*# ''ecal scaler gui''
-#*# ''trigger rate gui''  (requires DAQ Prestarted with <tt>v7_200nA.trg</tt>)
+#*# ''trigger rate gui''  (requires DAQ Prestarted with <tt>v8_200nA.trg</tt>)
-#*#* Dead time should be ~85%
+#*#* Dead time should be >~90%
-#*#* Total Trigger rate should be ~25 kHz.
+#*#* Total Trigger rate should be ~20 kHz.
 # SVT Setting (call SVT expert in)
 #* If beams are stable, SVT expert moves SVT to 1.0 and then 0.5 mm
@@ Line 190: / Line 190: @@
 #** Width on 2C21 should be <~0.1+/-0.05 mm
 #** Width on tagger harp (2C24) <~0.35 +/- 0.1mm
-#* If beam is stable enough to perform harp scans, turn ECAL HV '''ON''' to monitor and log ECal rates
 #* Halo counters UPS-L/R and TAG-L/T/T2 should be ~few Hz/nA [https://logbooks.jlab.org/entry/3376736]
 <!-- # <b> While MCC degausses the tagger magnet, verify that chicane is ON</b>
@@ Line 202: / Line 201: @@
 #* The first time sending beam to the Faraday cup after the hall is closed, page the SVT expert.
 # ''' Send beam to the Faraday cup '''
-#* 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 50 nA.</b>
+<!-- #* 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 >30 nA.</b>
 #* Ask MCC to establish 50 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=0.00,Y=0.00) and on 2H02(X=-1.00,Y=-0.85). Use the 2.82 mm SVT collimator. </font></b>.
 #* Tune beam profile at HPS using measured widths on 2H02A harp. The required beam profile at 2H02A harp is: X-width <~0.25 mm, Y-width <~ 0.10 mm for commissioning, and Y-width ~0.05 for physics running, and the tilt angle <15 degrees.