In situ performance of the Vertex Silicon Plane in the BM@N experiment during Run 9
Abstract
The Vertex Silicon Plane (VSP) was commissioned and operated for the first time as the most upstream tracking station of the Baryonic Matter at Nuclotron (BM@N) experiment at the NICA accelerator complex during Run 9. The station consisting of six double-sided silicon microstrip modules based on the CBM-BM@N detector technology was installed about 8 cm downstream from the target inside the SP-41 analyzing magnet. The in situ module performance was characterized in terms of the signal-to-noise ratio, time resolution, and Lorentz drift in the magnetic field. The most probable cluster signal-to-noise ratio ranges from 15.5 to 33.2, while the time resolution relative to the trigger pulse is about 12 ns. The tracking performance was evaluated using track-hit residuals and hit-matching efficiency; two independent reference configurations based on the Forward Silicon Detector (FSD) and Gas Electron Multiplier (GEM) tracking systems give consistent efficiencies of about 95%. The contribution of the VSP to the BM@N tracking performance was further studied through the transverse track impact parameter and the reconstruction of short VSP-GEM tracklets. Owing to its position close to the target and its coverage at large polar angles, the VSP provides an additional near-target tracking point and makes it possible to extend the geometrical acceptance beyond that of the FSD- and GEM-based central tracking system.
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BibTeX
@misc{dementev2026situ,
title = {{In situ performance of the Vertex Silicon Plane in the BM@N experiment during Run 9}},
author = {D. Dementev and M. Shitenkov and A. Kolozhvari and V. Leontyev and A. Sheremetev and D. Andreev and R. Arteche Diaz and D. Baranov and C. Ceballos Sanchez and I. Gabdrakhmanov and I. Gorelikov and T. Lygdenova and I. Osokin and S. Reyes Peña and I. Rufanov and E. Tsapulina and A. Voronin and Yu. Murin},
howpublished = {arXiv},
year = {2026},
month = oct,
doi = {10.48550/arxiv.2610.31077},
eprint = {2610.31077},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2610.31077},
}
RIS
TY - UNPB
TI - In situ performance of the Vertex Silicon Plane in the BM@N experiment during Run 9
AU - D. Dementev
AU - M. Shitenkov
AU - A. Kolozhvari
AU - V. Leontyev
AU - A. Sheremetev
AU - D. Andreev
AU - R. Arteche Diaz
AU - D. Baranov
AU - C. Ceballos Sanchez
AU - I. Gabdrakhmanov
AU - I. Gorelikov
AU - T. Lygdenova
AU - I. Osokin
AU - S. Reyes Peña
AU - I. Rufanov
AU - E. Tsapulina
AU - A. Voronin
AU - Yu. Murin
PY - 2026
DA - 2026/10/22
PB - arXiv
DO - 10.48550/arxiv.2610.31077
UR - https://arxiv.org/abs/2610.31077
AB - The Vertex Silicon Plane (VSP) was commissioned and operated for the first time as the most upstream tracking station of the Baryonic Matter at Nuclotron (BM@N) experiment at the NICA accelerator complex during Run 9. The station consisting of six double-sided silicon microstrip modules based on the CBM-BM@N detector technology was installed about 8 cm downstream from the target inside the SP-41 analyzing magnet. The in situ module performance was characterized in terms of the signal-to-noise ratio, time resolution, and Lorentz drift in the magnetic field. The most probable cluster signal-to-noise ratio ranges from 15.5 to 33.2, while the time resolution relative to the trigger pulse is about 12 ns. The tracking performance was evaluated using track-hit residuals and hit-matching efficiency; two independent reference configurations based on the Forward Silicon Detector (FSD) and Gas Electron Multiplier (GEM) tracking systems give consistent efficiencies of about 95%. The contribution of the VSP to the BM@N tracking performance was further studied through the transverse track impact parameter and the reconstruction of short VSP-GEM tracklets. Owing to its position close to the target and its coverage at large polar angles, the VSP provides an additional near-target tracking point and makes it possible to extend the geometrical acceptance beyond that of the FSD- and GEM-based central tracking system.
ER -