Software Implementation of a Fast Clustering Method for Time Projection Chamber Data of the MPD/NICA Experiment

The paper presents a software implementation of a fast clustering method for time projection chamber data of the MPD/NICA experiment. The method is intended for preliminary conversion of digital amplitude-time detector samples into a compact set of spatial hits suitable for event visualization and data quality control. Processing is performed at the level of sector fragments, which makes it possible to use the natural decomposition of an event and a multithreaded implementation of the algorithm. The paper describes the input data model, the main clustering stages, the output representation and the experimental evaluation procedure.

1. Kisiel A. The NICA Complex and the MPD experiment at JINR: status and physics potential / A. Kisiel // EPJ Web of Conferences. – 2022. – Vol. 259. – URL: https://doi.org/10.1051/epjconf/202225909002 (дата обращения: 05.05.2026).

2. Microscopic models for ultrarelativistic heavy ion collisions / S.A. Bass, M. Belkacem, M. Bleicher [et al.] // Progress in Particle and Nuclear Physics. – 1998. – Vol. 41. – P. 255–369.

3. Relativistic hadron-hadron collisions in the ultra-relativistic quantum molecular dynamics model / M. Bleicher, E. Zabrodin, C. Spieles [et al.] // Journal of Physics G: Nuclear and Particle Physics. – 1999. – Vol. 25. – P. 1859–1896.

4. Brun R. ROOT – An object oriented data analysis framework / R. Brun, F. Rademakers // Nuclear Instruments and Methods in Physics Research. Section A. – 1997. – Vol. 389, No. 1–2. – P. 81–86.

5. SAMPA chip: a new ASIC for the ALICE TPC and MCH upgrades / S.H.I. Barboza, M. Bregant, V. Chambert [et al.] // Journal of Instrumentation. – 2016. – Vol. 11. – URL: https://doi.org/10.1088/1748-0221/11/02/C02088 (дата обращения: 05.05.2026).

6. Time Projection Chamber for Multi-Purpose Detector at NICA: Technical Design Report / A. Averyanov, A. Bazhazhin, V.F. Chepurnov [et al.] // MPD [Электронный ресурс]. – URL: https://mpd.jinr.ru/wp-content/uploads/2023/11/TpcTdr-v07.pdf (дата обращения: 05.05.2026).