# Bonn 2010 – wissenschaftliches Programm

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# HK: Fachverband Physik der Hadronen und Kerne

## HK 10: Instrumentierung II

### HK 10.8: Vortrag

### Montag, 15. März 2010, 18:15–18:30, HG ÜR 6

**An FPGA helix tracking algorithm for PANDA** — •David Münchow^{1}, Martin Galuska^{1}, Thomas Geßler^{1}, Wolfgang Kühn^{1}, Jens Sören Lange^{1}, Yutie Liang^{1}, Ming Liu^{1}, Stefano Spataro^{2}, and Björn Spruck^{1} — ^{1}Justus Liebig University Gießen, Germany — ^{2}University of Torino, Italy

An online track finder for the PANDA experiment at the future FAIR facility was developed and tested.

The central Panda tracking detectors for charged particles will consist of a silicon based micro vertex detector (MVD, 5-7 hits/track) and possibly of a straw tube tracker (STT, 15 double layers of straws). Due to the solenoidal magnetic field, tracks of charged particles can be parametrized by a helix (if neglecting energy loss).

The algorithm works in several steps. Perpendicular to the beam direction the projection of the tracks is equivalent to a circle. Thus, first a conformal transformation will be used to convert the circles to straight lines. Second, a Hough transform is used to find the straight lines by a peak finding algorithm. Along the beam direction, a different Hough transformation is used.

As the algorithm was developed for an FPGA, it uses lookup tables. Possible FPGA implementation will be discussed.

This work is supported by BMBF – grant-no.: 06 GI 9107I and HICforFAIR