Calibration and Reconstruction Algorithm for FARICH System of the Detector at Super Charm-Tau Factory

• Published in: Bulletin of the Lebedev Physics Institute Vol. 50; no. 12; pp. 534 - 539
• Main Authors: Barnyakov, A. Yu, Bobrovnikov, V. S., Kononov, S. A., Rogozhin, P. D., Chadeeva, M. V.
• Format: Journal Article
• Language: English
• Published: Moscow Pleiades Publishing 01.12.2023; Springer Nature B.V
• Subjects: Accuracy; Aerogels; Algorithms; Calibration; Cerenkov counters; Charm (particle physics); Dependence; Electron-positron accelerators; Identification systems; Noise; Noise levels; Photomultiplier tubes; Physics; Physics and Astronomy; Pions; Radiation; Reconstruction; Sensors; Simulation; Cherenkov ring detector; silicon photomultiplier
• ISSN: 1068-3356; 1934-838X
• DOI: 10.3103/S1068335623120047

To accomplish the physical program of studies at the planned Super Charm-Tau Factory electron-positron collider, a high-precision particle identification system is required. A FARICH–ring-imaging Cherenkov detector based on focusing aerogel and an array of silicon photomultipliers is proposed. The paper describes a reconstruction algorithm developed for such a detector. The algorithm was tested on simulated pion events with different photodetector noise levels. For dark count rates up to 10 5 Hz/mm 2 , the factor uncertainty is shown to be less than 5 × 10 –4 (1 × 10 –3 ) for pions with momenta of 0.6–1.5 GeV/c and incident angles of 0°–10° (0°–45°) with respect to the normal to the detector plane.