An Event Building scenario in the trigger-less PANDA experiment

20th International Conference on Computing in High Energy and Nuclear Physics

物理学;计算机科学

Karabowicz, Radoslaw^1

GSI Helmholtzzentrum für Schwerionenforschung GmbH, Planckstr. 1, Darmstadt

64291, Germany^1

关键词: Data stream;    Event building;    Hardware trigger;    Particle identifications;    Polar angles;    Proton collisions;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/513/1/012016/pdf
DOI  :  10.1088/1742-6596/513/1/012016

学科分类：计算机科学（综合）

来源: IOP

【 摘 要 】

The PANDA experiment will be running up to 2 × 107antiproton-proton collisions per second at energies reaching 15 GeV. The lack of simple features distinguishing the interesting events from background, as well as strong pileup of events' data streams make the use of a hardware trigger impossible. As a consequence the whole data stream of about 300 GB/s has to be analyzed online, i.e: tracking, vertex finding, particle identification and event building. The GEM Tracker covers polar angles from 4 to 20 degrees in the forward direction, and can be used for the event building in a large fraction of events. In this work the analysis chain and the implemented algorithms will be presented. Moreover, the event builder prototype based on GEM Tracker data will be presented.