Difference between revisions of "The HPS Run Wiki"

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'''<font size=3>Upstream beamline commissioning and beam optics and stability studies using the tagger dump (beam will not go through the Hall). The goal is to get CW, stable beam to the Hall-B tagger dump. </font>'''
 
'''<font size=3>Upstream beamline commissioning and beam optics and stability studies using the tagger dump (beam will not go through the Hall). The goal is to get CW, stable beam to the Hall-B tagger dump. </font>'''
  
−
* Follow procedures in the "[https://wiki.jlab.org/hps-run/images/0/0d/HPS_beamline_commissioning.pdf Beamline commissioning plan]".
+
* Re-establish CW 1 pass beam to the Hall-B tagger dump
−
** Tuning beam to tagger dump is covered under item (A).
+
* Work with MCC crew to establish small size stable beam at the tagger - beam parameters X/Y width ~<1o0 micron, and S/N on halo counters from the harp wire >10E4</font>.
−
** Depending on the machine state, items (A.7) and (A.8) may not be feasible to complete at this time.
+
* Perform harp scans using 2C21 and tagger (2C24) harps.  
−
*First establish [http://clasweb.jlab.org/clasonline/servlet/newloginfo?action=logentry&entryId=41734 6-GeV era quality beam] <font color=red> X/Y width ~<150 micron, and S/N on halo counters from harp wire >10E4</font> on tagger (2C24) harp.
 
 
*Then, using optics setting used in [[Media:HPS_Beamline.pdf|A. Freyberger's simulations]], achieve needed beam parameters at 2C24/tagger harp to deliver HPS requested beam ("pancake") on target in downstream alcove.
 
*Then, using optics setting used in [[Media:HPS_Beamline.pdf|A. Freyberger's simulations]], achieve needed beam parameters at 2C24/tagger harp to deliver HPS requested beam ("pancake") on target in downstream alcove.
 
** <font color=blue>In order to do above program, when CW beam is established, Hall-B beam halo counters and harps (2C21 and 2C24 or tagger) must be calibrated first. So it may take multiple harp scans to set harp motion limits and halo counter PMT gains. With any issue contact Beamline Expert or RC. </font>  
 
** <font color=blue>In order to do above program, when CW beam is established, Hall-B beam halo counters and harps (2C21 and 2C24 or tagger) must be calibrated first. So it may take multiple harp scans to set harp motion limits and halo counter PMT gains. With any issue contact Beamline Expert or RC. </font>  

Revision as of 18:35, 14 November 2014

[edit]

RC: Stepan Stepanyan

PDL: Harut Avagyan

Every Shift:

  1. Follow run plan as outlined by RC
  2. Keep shift summery up-to-date in HBLOG
  3. Document any beam condition change and send scaler GUIs to HBLOG
  4. Continuously check quality of data

Every Run:

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


MCC Daily Meetings


Run Plan: Nov. 9 - Nov. 10

Upstream beamline commissioning and beam optics and stability studies using the tagger dump (beam will not go through the Hall). The goal is to get CW, stable beam to the Hall-B tagger dump.

  • Re-establish CW 1 pass beam to the Hall-B tagger dump
  • Work with MCC crew to establish small size stable beam at the tagger - beam parameters X/Y width ~<1o0 micron, and S/N on halo counters from the harp wire >10E4.
  • Perform harp scans using 2C21 and tagger (2C24) harps.
  • Then, using optics setting used in A. Freyberger's simulations, achieve needed beam parameters at 2C24/tagger harp to deliver HPS requested beam ("pancake") on target in downstream alcove.
    • In order to do above program, when CW beam is established, Hall-B beam halo counters and harps (2C21 and 2C24 or tagger) must be calibrated first. So it may take multiple harp scans to set harp motion limits and halo counter PMT gains. With any issue contact Beamline Expert or RC.
Beam
Energy ~2.0 GeV
Current < 200.0 nA CW
Position
X Y
~0 mm ~0 mm
Profile
X Y
< 0.3 mm < 0.3 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
DATE NAME
DATE NAME
DATE NAME
DATE NAME
Physics Division Liaison
DATE NAME
DATE NAME
DATE NAME
DATE NAME






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