Project

General

Profile

PC-2015-11-12-optics

Phone Details

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

Agenda

  • Optics review plan (Chris Rogers)
  • Field mapping (Victoria/John Cobb/Jo Langford)
    • Field mapping of revised SSD
  • Theoretical magnet parameters and effect of iron (Jaroslaw/Victoria)
  • Transfer matrix and magnet alignment (Sophie/Chris Rogers)
  • Beamline commissioning (Victoria/Jaroslaw)
    • March/April/June data (without tracker)
    • > June data (with tracker)
  • Optics without M1 at SSD (Chris Rogers/Scott Berg)
    • Tracking (Ao/Ryan/Chris Hunt/Chris Rogers)
    • Algorithm to calculate the phase space volume (vs RMS emittance)
    • Track fitting/extrapolation for indirect emittance measurement
  • Bayesian analysis (Rob Ryne)
  • Demonstration of Ionisation Cooling paper (Jaroslaw/JB Lagrange)
  • Demonstration of Ionisation Cooling optics w/o Match Coil 1 in downstream Spectrometer Solenoid (Dave Neuffer)
  • Demonstration of Ionisation Cooling alignment and tolerances (Alan Young)

Notes

Chris Rogers
Scott Berg
Joe Langlands
Paul Soler

Optics review plan
  • Draft agenda is on Ken Long

Field mapping *

Magnet alignment

Optics without M1 at SSD
  • Luminosity = n^2/emittance_trans
  • Scott Berg lattice looks like it performs significantly better in terms of cooling
    • Note that SS field is low
    • Note that FC current is high
    • "Luminosity" parameter does increase 4 %
  • (Modified) Ao's had "luminosity" parameter that increases by 1 %
  • Rogers "luminosity" parameter did not increase
  • Note that coil currents capped at 225 A
  • Check coil currents capped for Match coils
  • ACTION: Rogers to send Match coil currents to Scott Berg
  • Note no momentum spread was used
  • Scott will resurrect his histogramming method