2016-08-25-optics¶

Thursday 25th August 15:00 BST.

Phone Details¶

ReadyTalk numbers:

US 866-740-1260
UK 0800-496-0576
Swiss 0800-70-53-51
Italy 800182592

PIN: 5673390

Agenda¶

• Field mapping and theoretical magnets, effects of iron (Victoria/John Cobb/Jo Langlands)
• Transfer matrix and magnet alignment (Sophie/Chris Rogers)
• Beamline
  • Optics of pionic beamline (Paolo)
    • Dipole field measurement?
  • Target simulation (Ao)
• Step IV Optics (Ao Liu)
  • Validation of optics model
  • Emittance/cooling simulation (Francois)
• Algorithm to calculate the phase space volume (vs RMS emittance) (Tanaz Mohayai/Chris Rogers)
• Demonstration of Ionisation Cooling paper (Jaroslaw/JB Lagrange)
• AOB
• Date of Next Meeting
  • Thursday 25th August
  • Thursday 1st September no meeting this week; Rogers will be away
  • Thursday 8th September

TOF12 plots, etc¶

• Comment on D1 D2 saturation curves; I use current I [A] given by I = B*253.91 - 55.998*B^2 + 39.59*B^3 where B is the field parameter that I plug into G4BL [T]. For "no saturation" setting I just use I = B*253.91. To do the reverse calculation i.e. B(I) I use Newton Raphson to find roots of the polynomial.

The MC data is available from: http://heplnv152.pp.rl.ac.uk/analysis/

I attach my script for converting from current to field.