2017-07-14 emittance-evolution¶

15:00 BST Friday 14th July

http://mice.iit.edu/phonebridge.html

• Status of paper - Rogers
• Tracker studies - Hunt
• Emittance analysis - Drielsma
• Job list + route forwards - all
• Timeline - Rogers

Rogers Notes¶

Discussion of Job list:

• Beam matching/Event selection
  • Selecting a beam to get a matched event
    • How do we do a beam weighting?
    • Beam weighting: what is the statistical uncertainty introduced by beam weighting?
  • AGREED: Chris Hunt will dig into the beam selection
    • Francois maybe its not high priority
• Other event selection
  • Upstream aperture selection
    • Add aperture cut upstream of tracker (e.g. diffuser)
    • Add aperture cut on tracker fiducial volume
  • Downstream aperture selection
    • Consider aperture cut on events that look likely to scrape
  • AGREED: Rogers will do the aperture selection
• Field studies
  • MAUS disagrees with Hall probes?
  • Consider Joe Langlands
  • Measurement in hall probe
  • Shape of magnetic field is reasonable
  • Tracker alignment (Chris H)
  • AGREED: Hunt and Langlands if he agrees
• MC Uncertainties
  • Durga and Dimitrije
  • Push through later on

Timeline:- end of August for bulk of work complete

• NuFact - end of September

Ken Long Notes¶

Date: 14Jul17
Present: KL, CR, CH, FD

• Event selection:
  • Pre-selection: TOF cuts, apertures etc.
    • May use Misha’s routine if it seems ready.
    • Apertures: CR
    • Preselection: CH
      • Will see if Misha’s stuff can be used.
    • Later, selection to give matched beam. Requires preselection.
• Magnetic field/tracking issues:
  • Two classes;
    • Scaling of field to Hall probes: CH
    • Tracker to field alignment: CH
    • Effect of non-uniformity: CH
  • Monte Carlo systematic uncertainties:
    • Various manifestations; alignment, modelling etc.: FD and DR (in absentia!)