Frankfurt 2014 – wissenschaftliches Programm
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HK: Fachverband Physik der Hadronen und Kerne
HK 63: Schwerionenkollisionen und QCD Phasen
HK 63.5: Vortrag
Freitag, 21. März 2014, 15:00–15:15, HZ 6
Short-lived particles reconstruction with KF Particle Finder for the CBM experiment — Ivan Kisel1,2,3, Iouri Vassiliev3, and •Maksym Zyzak1,2,3 for the CBM collaboration — 1Goethe-Universität Frankfurt am Main — 2Frankfurt Institute for Advanced Studies — 3GSI Helmholtzzentrum fur Schwerionenforschung GmbH
The CBM experiment is being designed to operate at extreme interaction rate up to 107 Hz. Due to the complicated triggering the full online event reconstruction is required.
The KF Particle Finder package is being developed for the online reconstruction and selection of short-lived particles. The package reconstructs about 50 particles including strange mesons, hyperons, charmed particles, low mass vector mesons, strange and charmed resonances. The Au+Au collisions with energies from 4 to 35 AGeV were investigated with realistic detector simulation. The package shows high reconstruction efficiency. For example, for Ks0 and Λ particles it is about 20%.
Since the speed is of particular importance for online reconstruction, the package was vectorized and parallelized. KF Particle Finder shows linear scalability with respect to the number of cores. The processing time for one mbias Au+Au event at 25 AGeV is about 1.5 ms per core.
Supported by EU-FP7 HadronPhysics3, HIC for FAIR, HGS-HIRe for FAIR and Hessischen Ministerium fuer Wissenschaft und Kunst