Track parameter propagation through the application of a new adaptive Runge-Kutta-Nyström method in the ATLAS experiment

, , and

Published 1 April 2009 • Published under licence by IOP Publishing Ltd
, , Citation E Lund et al 2009 JINST 4 P04001 DOI 10.1088/1748-0221/4/04/P04001

Download Article PDF

Article metrics

2119 Total downloads

Share this article

Author affiliations

1 University of Oslo, PO Box 1072 Blindern, 0316 Oslo, Norway

2 European Organization for Nuclear Research, CERN CH-1211, Genève 23, Switzerland

3 P. N. Lebedev Institute of Physics, Leninskiy prospekt 53, Moscow, Russia

4 Gjøvik University College, PO Box 191 Teknologivn. 22, 2802 Gjøvik, Norway

Dates

  1. Received 4 February 2009
  2. Accepted 9 March 2009
  3. Published

Buy this article in print

Journal RSS
Sign up for new issue notifications
1748-0221/4/04/P04001

Abstract

In this paper we study several fixed step and adaptive Runge-Kutta methods suitable for transporting track parameters through an inhomogeneous magnetic field. Moreover, we present a new adaptive Runge-Kutta-Nyström method which estimates the local error of the extrapolation without introducing extra stages to the original Runge-Kutta-Nyström method. Furthermore, these methods are compared for propagation accuracy and computing cost efficiency in the simultaneous track and error propagation (STEP) algorithm of the common ATLAS tracking software. The tests show the new adaptive Runge-Kutta-Nyström method to be the most computing cost efficient.

Export citation and abstract BibTeX RIS

Previous article in issue
Please wait… references are loading.
10.1088/1748-0221/4/04/P04001