2016-02-10 physics-coordinator¶

Papers¶

Demonstration of Ionisation Cooling (JB Lagrange et al)

• Draft moving slowly forwards
• Pushing through reconstruction of MC (error bars)
• Some more elucidation/justification of the optimisation routines

Emittance paper (V. Blackmore et al)

• Workshop on Monday; well attended and some interesting results
  • Tracker low pz population also visible in EMR? TBC
  • Tracker efficiency looks okay
• Aim for first draft MICE note by beginning of March

Multiple scattering (J. Nugent et al)

• Also presented at workshop on Monday
• Left-right asymmetry appears to have been eliminated by heavy cuts
• Alternative bayesian analysis in progress (R Bayes)

Other analyses¶

Detector alignment (F. Drielsma et al)

• As presented at VC; looks pretty good

Magnet alignment (S. Middleton et al)

• Believable transfer matrix calculation in straight tracks case
• Checking with more data; proceed to FC data
• Looking at residuals-based analysis, track fitting in non-uniform non-aligned solenoid field, etc (C. Rogers)

Ckov light yield (A. Liu)

• Data from September 2015 now looks consistent with MICE Note 473; new geometry with better TOF positions

Simplex-based non-linearities (C. Rogers)

• Looking at phase space volume evolution using small test volumes; expose dynamic aperture

Step IV lattice w/o M1 SSD (A. Liu)

• New lattice presented at optics review
• Looks encouraging; lattice for 140-240 MeV/c flip and non-flip
• Still not clear that we can do a "beta" function scan or what form that takes

Future¶

Run plan 2015-04

• Tracker DAQ studies
• Alignment
• Straight tracks for emittance paper
• Beam rate vs pions (requires DS)
• LiH scattering (with/without absorber)

Workshop planned for Tuesday 1st March to pick up analysis status