Go to Home Page
CHEP INFORMATION
Bulletins
Committees
Scientific Program
Docs by topics
Social events
Conference location
Secretariat
GRID INFORMATION
 • Grid WShop & Tutorial
 • Grid Program
USEFUL LINKS
 • Visiting Padova
 • INFN Padova
 • University of Padova
 • CHEP: '94 '95 '97 '98

Last update: Apr 1, 2000

to first abs  to previous absby abs number to next abs  to last abs

 

to first abs on this KT  to previous abs on this KTon same keytopic to next abs on this KT  to last abs on this KT


A031

Track Fitting on the Riemann Sphere

Are Strandlie1, Jørn Wroldsen2
  1. Department of Technology, Gjøvik College, and Department of Physics, University of Oslo.
  2. Department of Technology, Gjøvik College.

Speaker: Jørn Wroldsen

  We present a novel method of fitting trajectories of charged particles in high-energy physics particle detectors. The method fits a circular arc to two-dimensional measurements by mapping the measurements onto the Riemann sphere and fit a plane to the transformed coordinates of the measurements. In this way, the non-linear task of circle fitting, which in general requires the application of some iterative procedure, is turned into a linear problem which can be solved in a fast, direct and non-iterative manner.
  We illustrate the usefulness of our approach by stating results from simulation experiments of tracks from the ATLAS Inner Detector Transition Radiation Tracker (TRT). The experiments show that the accuracy of the estimated track parameters is virtually as good as the accuracy obtained by applying an optimal, non-linear least-squares procedure. The computational cost of our method, however, is significantly lower.

Presentation:  Adobe Acrobat pdf Short Paper:  Adobe Acrobat pdf 



  | Top | Home | Bulletins | Committees | Scientific Program | Docs by topics | Social Event | Conference Location | Secretariat |