Patent ID: 7908121
Filing Date: 2011-03-15
Classification: G01N,G01V,G06F

Abstract:
1. A method for reconstructing the trajectory of a charged particle passing through a charged particle detector having a plurality of drift cells, said method comprising: (a) obtaining hit signals representing identifiers of drift cells hit by charged particles and corresponding hit times; (b) grouping in-time drift cell hits identified as being associated with a track of a particular charged particle passing through said detector; (c) initially estimating time zero for said particular charged particle; (d) determining drift radii based on estimates of time zero, drift time conversion data and the time of the hit; (e) fitting linear tracks to drift radii corresponding to a particular time-zero; and (f) searching and selecting a time-zero value associated with the best of the track fits performed for particular charged particle and computing error in time-zero and tracking parameters.