Gießen 2007 – scientific programme
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HK: Fachverband Physik der Hadronen und Kerne
HK 49: Poster
HK 49.33: Poster
Thursday, March 15, 2007, 16:00–17:00, P
Track Reconstruction Software Progress for HADES Spectrometer. — Olga Pechenova, Geydar Agakishiev, and •Vladimir Pechenov for the HADES collaboration — II Physikalisches Institut, Universität Gießen
Recent improvements of the HADES track segment fitter software will be presented. Among them there are the analytical calculation of the derivatives, the procedure for initial parameters optimization, and the noise wires filtering procedure tuning. As a result, the reconstruction efficiency for e+e− pairs in 12C12C data could be increased by more then 40%. In addition, a fast algorithm of energy loss correction for the reconstructed momentum was developed and implemented into the code. The momentum resolution of HADES for the current status of tracking software and detector calibration was determined using the kinematics of elementary reactions and will be presented. The developed software is successfully used for analysis of both pp and AA collisions.