Author/Authors :
Chikanian، نويسنده , , A. and Kumar، نويسنده , , B.S. and Smirnov، نويسنده , , R. J. FitzGerald and N. M. OBrien، نويسنده , , E.، نويسنده ,
Abstract :
We have developed a non-linear grid interpolation technique to determine the momenta of particles traversing an axially symmetric focusing magnetic field. We describe the technique, and quantify its performance in the context of the PHENIX spectrometer.