Difference between revisions of "The HPS Run Wiki"

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== RC: Stepan Stepanyan ==  
+
== RC: John Jaros ==  
 
*(757) 575-7540
 
*(757) 575-7540
 
*9 575 7540 from Counting Room
 
*9 575 7540 from Counting Room
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# Document any beam condition change and send scaler GUIs to HBLOG
 
# Document any beam condition change and send scaler GUIs to HBLOG
 
# Send "scaler_hps" GUI to logbook at least twice per shift or any time run conditions change
 
# Send "scaler_hps" GUI to logbook at least twice per shift or any time run conditions change
#Peform 2H02A harp scan ones per shift or when beam conditions changed based on beam monitors (BPMs, halo rates, beam-viewer)
+
# Peform 2H02A harp scan ones per shift or when beam conditions changed based on beam monitors (BPMs, halo rates, beam-viewer)
 
# Fill out shift checklist in the logbook, HBLOG, using template at least ones per shift or when run conditions change  
 
# Fill out shift checklist in the logbook, HBLOG, using template at least ones per shift or when run conditions change  
 
# Continuously check quality of data
 
# Continuously check quality of data
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== Run Plan:March 18-19 (morning) ==
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== Run Plan:March 18-19 (swing/owl/day) ==
 +
 
 +
 
 
'''<font size=3> Always Setup Beam to the Hall-B Tagger Dump after long down  </font>'''
 
'''<font size=3> Always Setup Beam to the Hall-B Tagger Dump after long down  </font>'''
  

Revision as of 16:26, 18 March 2015


[edit]

RC: John Jaros

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

PDL: Harut Avagyan

Every Shift:

  1. Follow run plan as outlined by RC
  2. Ask MCC if orbit locks are on, they should be.
  3. Keep shift summery up-to-date in HBLOG
  4. Document any beam condition change and send scaler GUIs to HBLOG
  5. Send "scaler_hps" GUI to logbook at least twice per shift or any time run conditions change
  6. Peform 2H02A harp scan ones per shift or when beam conditions changed based on beam monitors (BPMs, halo rates, beam-viewer)
  7. Fill out shift checklist in the logbook, HBLOG, using template at least ones per shift or when run conditions change
  8. Continuously check quality of data
  9. With any issue contact On-Call Experts or RC.

SVT Instructions

Before sending beam to Faraday cup, verify (and page expert if otherwise):

  • SVT should be open: "Position" at 0.000 mm in scaler GUI
  • SVT HV is off: all red/green indicators RED in SVT bias GUI

The first time sending beam to the Faraday cup after the hall is closed, page the SVT expert.

Every Run:

  1. a
  2. b
  3. c
  4. d


MCC Daily Meetings


Run Plan:March 18-19 (swing/owl/day)

Always Setup Beam to the Hall-B Tagger Dump after long down

  • After MCC finishes beam tune
    • make sure beam conditions did not changed, beam position and halo counter rates are as before (see logbook from previous days)
    • work with MCC to move bean position and direction to see if lower counts on upstream halo counters can be achieved (UPS-L and UPS-R)

Upstream halo counters must count <10Hz, downstream counters ~Hz

  • Perform harp scans to verify that beam profile did not changed, check with previous scan results: 2C21 x/y widths <50 micron, on the tagger/2C24 harp x/y widths ~300 micron. Use UPS-L for analysis, send harp scan results to the logbook
  • After beam tune is done send HPS scaler GUI to the logbook with proper comment

Setup Beam to the Hall-B Faraday cup Dump and Setup HPS.

  • Ask MCC to turn OFF the beam, turn OFF and degous tagger magnet
  • After tagger magnet is degaussed, change beam configuration on "bta" GUI to "Electron"
  • Insert Chromax screen on the downstream viewer on the beam
  • Start with tune mode beam, make sure beam is centered on the downstream viewer before going to CW

Beam should be centered using correctors on 2C21, 2C23, and 2C24 girder. All correcotrs on 2H00 and 2H02 must bet at 0 value!!!

  • Ask for ~10 nA CW beam, watch cctv6 to make sure spot on the downstream viewer is clear and approximatly at the center of the screen
  • Check to make sure Faraday cup and nA BPMs read similar curents
  • Check beam position stability on 2H01 nA and 2H02 stripline BPMs
  • If everything looks normal, rates on downstream counters are <10Hz, and on HPS-L and HPS-R are <30Hz at 10nA, send main HPS scaler GUI to the logbook and proceed
  • Center beam on the ECal using symmetry of rates on the top and bottom modules
  • Use 2H02A harp to study beam profile (beam current should not exceed 20 nA), beam size should be X-width ~250 um Y-width < 50 um
  • Energize HPS chicane - ask MCC to turn beam OFF, ramp up magnets to desired currents according to procedures (use the table).
  • After magnets are at required settings (will take ~40 min) ask MCC for 10 nA beam
  • Observe beam spot on chromox viewer, beam spot should be at the same place as before magnets were turned ON. If spot is shifted, change Frascati magnets curent to correct the posiotion - if beam is left of the original point current must be lowered, if it is shifted right current must be increased. Do current change with small steps, ~1 Amp
  • After chicane is set, record halo counter rates, turn beam off and insert HPS target, 4um W
  • Using table provided change chicane settings to move beam left and right on the target with ~1mm step. First move righ, stop when rates on halo counters will increase by several times, then move left until rates will start to go up. Turn beam off every time currents are changed

<--! At 6am ask MCC for tagger magnet OFF and degaused, and hall swiped and put to the restricted access -->

Beam
Energy ~2.0 GeV
Current < 200.0 nA CW
Position
X Y
~0 mm ~0 mm
Profile
X Y
< 0.1 mm < 0.1 mm
Target
#1 0 mm
Magnets
PS Current 0 A
Chicane Dipole #1 0 A
Chicane Dipole #2 0 A
DAQ
Configuration ___________________
Configuration file
Prescales
Thresholds
Events Per Run
Dead Time




AccumulatedCharge.png


Run Coordinator
March 1 - March 11 Stepan Stepanyan
March 12 - March 18 Francios-Xavier Girod
March 19 - April 1 John Jaros
April 2 - April 8 Nathan Baltzell
April 9 - April 15 Takashi Maruyama
April 16 - April 22 Maurik Holtrop
April 23 - April 29 Raphael Dupre
April 30 - May 6 Takashi Maruyama
Physics Division Liaison
Harut Avakian
DAQ On-Call
March 1 - May 4 Sergey Boyarinov
ECAL On-Call
March 1 - March 9 Andrea Celentano
March 9 - March 23 Nathan Baltzell
March 23 - March 30 Holly Vance
March 30 - April 13 Gabriel Charles
April 13 - April 20 Raphael Dupre
April 20 - April 27 Michel Garcon
April 27 - May 4 Holly Vance
SVT On-Call
March 8 - March 14 Sho Uemura
March 15 - March 28 Omar Moreno
March 29 - April 4 Pelle Hansson
April 5 - April 8 Omar Moreno
April 9 - April 19 Matt Graham
April 20 - April 26 Tim Nelson
April 27 - May 4 Sho Uemura
SlowControls On-Call
March 1 - March 18 Hovane Egiyan
March 19 - April 1 Stepan Stepanyan




Svtpic.png

Ecalpic.png