Triplet based online track finding in the PANDA-STT

FAIR NExt generation of ScientistS 2013

Mertens, M.C.^1,2,3

II. Physikalisches Institut, Justus-Liebig-Universität Gießen, Germany^1

IKP, Forschungszentrum Jülich GmbH, Germany^2

ZIM, Universität Duisburg-Essen, Germany^3

关键词: Antiproton beams;    Finding algorithm;    Fixed targets;    Interaction rate;    Online processing;    Proof of concept;    Proton collisions;    Tracking algorithm;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/503/1/012036/pdf
DOI  :  10.1088/1742-6596/503/1/012036

来源: IOP

【 摘 要 】

The PANDA-Experiment at the future FAIR facility in Darmstadt will study antiproton-proton collisions in a fixed-target setup with a phase-space cooled antiproton beam with a momentum from 1.5 to 15 GeV/c at a nominal interaction rate of 2 · 107s-1. The data acquisition of the detectors has to run in a triggerless mode and the physics events of interest are identified by an online event filter. Tracking information is a key input for the event filter to distinguish signal events from background. A variety of tracking algorithms is foreseen to process the different track topologies. The so-called Triplet Finder, which is presented here, is a track finding algorithm based on the central straw tube tracker (STT) of PANDA. The algorithm focuses on mathematical simplicity and robustness to allow an online processing of the incoming detector hits. The algorithm and results of a proof-of-concept implementation are presented.