## 2016-11-22-straight-tracks-paper » History » Version 6

Rogers, Chris, 23 November 2016 14:03

1 2 3 1 Rogers, Chris h1. 2016-11-22-straight-tracks-paper 6 Rogers, Chris h2. Details Tuesday 22nd November at 15:00 and continued on Wednesday 23rd November at 14:00. 1 Rogers, Chris http://mice.iit.edu/phonebridge.html 2 Rogers, Chris Note: http://mice.iit.edu/micenotes/public/pdf/MICE0497/MICE0497.pdf 3 Rogers, Chris h2. Notes Present: John Cobb Paul Soler Mariyan Bogomilov Chris Rogers Alan Young Ryan Bayes h3. Page 1 First three comments may be more appropriate for the paper rather than the MICE note * Should defend choice of Xenon * Should define symbols in emittance formula * Should define equilibrium emittance # "Thus, despite the limited angular range it is extremely attractive as a direct measure of the scattering of muons" Need to add some more quantitative discussion of angular acceptance. h3. Page 2 # Table 1: Row for Al numbers are suspect - correct # Table 1: General comment that some description of the material budget is required; how much material and where? # Table 1: In similar vein, some description of absorber is necessary 4 Rogers, Chris # Scattering angle definitions eqn (3) and (4) are not correct - see supplementary note from JHC attachment:Projected-angles.pdf 3 Rogers, Chris # Correction @theta = \sqrt()@ should be @theta = \sqrt()@ # There was some discussion over the use of a Gaussian fit, as mentioned in final sentence of 1.1. Comment that the description would be better in the "analysis" section where the relevant measurements and plots are listed. # 0.0038 should be 0.038 # Comment that section 1.2 needs a lot of work; it was not reviewed in detail. h3. Page 3 5 Rogers, Chris # "deviation between data and simulation": some discussion over this comment. Which direction is "South"? Why does beam offset introduce bias? ** Beam offset causes clipping, which is a bias ** the 4 cm shift is in MC ** It is a bias in the simulated measurement, not in the data itself h3. Page 4 (Fig. 1) # Be explicit that this is MC through a "bare absorber" # Why is the Geant4 MC of Xenon so weird - e.g. asymmetric? ** Ryan is not sure and will (continue to) dig # Why is the Cobb-Carlisle MC of Xenon so weird (e.g. thick)? ** JHC will dig h3. Page 5 No comment h3. Page 6 # Some discussion of the cuts and rate accounting 6 Rogers, Chris ** Timing selection is a very small time bin, e.g. 200 ps over the few ns width of the muon peak ** Fiducial selection is a 300 mm diameter tracker over a 5 m drift length ** Need to add some description of the basic geometry