Bonn 2020 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 43: Heavy-Ion Collisions and QCD Phases X

HK 43.6: Vortrag

Donnerstag, 2. April 2020, 15:30–15:45, J-HS F

Tracking QA and search for primary vertices — •Artemiy Belousov1, Yuri Fisyak3, Ivan Kisel1,2, and Maksym Zyzak1 for the CBM collaboration — 1FIAS, Germany — 2GSI, Germany — 3Brookhaven National Laboratory, USA

Modern experiments in high energy physics tend to increase the amount of data to be processed, thus, the execution speed of the algorithms becomes crucial. However, the efficiency and precision of the applied procedures cannot be compromised. Therefore, the Kalman filter method is usually used as a basis in particle tracks reconstruction, since it satisfies the above-mentioned requirements.

Current implementation of the Kalman filter method for reconstruction of primary vertices is added to the TPC primary vertex finder of the STAR experiment within the CBM Phase-0 program. The algorithm will be applied in the STAR during the Beam Energy Scan II (BES-II) program, which requires high operational speed. At the same time, quality of the fitting procedure should stay high. The developed Kalman filter based primary vertex fit will be optimized for working with real data in online mode within the High Level Trigger of STAR.

As a part of the preparation for the BES-II program the development of express quality assurance (xQA) is required. The developed express QA allows to monitor the data production process. The procedure shows that Express production provides high quality of the dE/dx measurement.

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