Difference between revisions of "20180424-Optics-Mtg"

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(Agenda)
(Minutes)
 
Line 18: Line 18:
  
 
== Minutes ==
 
== Minutes ==
 +
* Tyler review collimator
 +
** Width of >8cm has diminishing returns on dR/R
 +
** Bottoming at out ~1.25% on dR/R with 2% systematic on A, 85% polarization
 +
** Getting 750MHz in single arm
 +
** Noticed that PREX-II proposal considered 925-1000 MeV beam and had 0.8% - likely the difference
 +
** Will look at trying to change collimator to smaller Q2 at expense of central angle
 +
** HPS will have sensitivity to our selected beam energy
 +
 +
* Ryan looking at transport and FP systems
 +
** Data look inconsistent as we understand transformation
 +
** Will look at in code with Seamus over next week
 +
** x offsets not understood either, likely just fot out
 +
*** Dipole not set correctly?

Latest revision as of 09:03, 25 April 2018

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Agenda

Optics g4hrs update

Minutes

  • Tyler review collimator
    • Width of >8cm has diminishing returns on dR/R
    • Bottoming at out ~1.25% on dR/R with 2% systematic on A, 85% polarization
    • Getting 750MHz in single arm
    • Noticed that PREX-II proposal considered 925-1000 MeV beam and had 0.8% - likely the difference
    • Will look at trying to change collimator to smaller Q2 at expense of central angle
    • HPS will have sensitivity to our selected beam energy
  • Ryan looking at transport and FP systems
    • Data look inconsistent as we understand transformation
    • Will look at in code with Seamus over next week
    • x offsets not understood either, likely just fot out
      • Dipole not set correctly?