Aerogel RICH Counter at the Belle II Detector
High Energy Physics - Experiment
2025-12-24 v2 Instrumentation and Detectors
Abstract
We report on the design, operation, and performance of a novel proximity-focusing Ring Imaging Cherenkov (RICH) detector equipped with a multilayer focusing aerogel radiator, developed for the forward region of the Belle II spectrometer at the SuperKEKB collider. The system achieves effective separation of charged pions, kaons, and protons across the full kinematic range of the experiment, from 0.5 GeV/c to 4 GeV/c. To date, the detector has successfully operated in data-taking, contributing to the collection and analysis of nearly 600/fb of Belle II collision data.
Keywords
Cite
@article{arxiv.2512.19146,
title = {Aerogel RICH Counter at the Belle II Detector},
author = {I. Adachi and N. Akopov and D. Augueste and J. Bonis and L. Burmistrov and S. Dey and R. Dolenec and G. Ghevondyan and R. Giordano and A. Hvala and T. Iijima and S. Iwata and H. Kakuno and G. Karyan and H. Kawai and T. Kohriki and T. Konno and S. Korpar and P. Krizan and S. Kurokawa and Y. Lai and A. Lozar and M. Mrvar and G. Nazaryan and S. Nishida and S. Ogawa and R. Pestotnik and I. Prudiiev and L. Santelj and A. Seljak and L. Senekovic and M. Shoji and K. Spenko and T. Sumiyoshi and M. Tabata and K. Uno and E. Waheed and M. Yonenaga and Y. Yusa},
journal= {arXiv preprint arXiv:2512.19146},
year = {2025}
}
Comments
25 pages, 30 figures. Corresponding authors: S. Korpar, S. Nishida