Difference between revisions of "Run2 - October 2015"

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Mott Run 2 is scheduled from October 23 - 26.
 
Mott Run 2 is scheduled from October 23 - 26.
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== [[Run 2 Plan]]
  
 
== [[Mott Run 2 Journal]] - Our online summary of the experiment with many useful links ==
 
== [[Mott Run 2 Journal]] - Our online summary of the experiment with many useful links ==
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= Run II Priorities ? =
 
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# Good knowledge of beam (energy, energy spread, emittance)
 
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# Target thickness extrapolation at KE=5.0 MeV
 
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# Sensitivity of analyzing power vs. energy about 5.0 MeV
 
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# Repeat spot size and possibly energy spread systematic at KE=5.0 MeV
 
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# Asymmetry vs. beam intensity
 
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== Prep and HCO w/o beam ==
 
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# (John) 31 MHz laser -
 
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# (Riad) Test laser RF trigger at DAQ
 
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# (Joe) Make a photocathode – SL5247-4 (52471-1 was used for Run I, but it's being removed from Gun2 next week)
 
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# (Marcy) Check Mott vacuum, configuration (hipot 3D01 again?)
 
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# (Joe) Cycle target ladder, test camera, test magnets, test 2D harp
 
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# (Riad/Daniel) Check HV, check DAQ, Analysis, Macros ready for 31 MHz
 
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== Pre-Run II Beam Setup and Tests  ==
 
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# (Injector Group) Recovery to FC2 @ 6.3 MeV by 10/15
 
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# (1 shift) Mott beam test - Test 31 MHz synchronization, set L/R/U/D delays, set PMT HV, check PMT response
 
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# (1 shift) Beam diagnostics - Test harp, BCM calibration, quick emittance method
 
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== Run II Beam and Polarimeter Setup ==
 
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# Set KE=5.0 MeV
 
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# Measure emittance at MQJ0L02
 
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# Measure energy spread at IHA2D00
 
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# Verify BCM calibration good
 
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# Calibrate PITA IHWP=in/out
 
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# Setup beam to Mott, check PMT HV, TOF spectra, set thresholds HI, check instrumental asymmetry
 
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# Setup spin direction, use Mott for final adjustment
 
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== Target Foil Extrapolation at KE=5.0 MeV ==
 
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# Measure foils with large aperture
 
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# Interleave 1um gold foils to demonstrate stabiilty
 
  
 
[[Availability]]
 
[[Availability]]

Revision as of 06:21, 7 October 2015

CEBAF_MeV_Mott_Polarimeter

Mott Run 2 is scheduled from October 23 - 26.

== Run 2 Plan

Mott Run 2 Journal - Our online summary of the experiment with many useful links

Availability

Mott Run 2 Motivation Discussion

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