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