Operation and performance of the MEG II detector

作者：K. Afanaciev, A. Baldini, S. Ban, V. Baranov, H. Benmansour, M. Biasotti, G. Boca, P. W. Cattaneo, G. Cavoto, F. Cei, M. Chiappini, G. Chiarello, A. Corvaglia, F. Cuna, G. Dal Maso, A. de Bari, M. De Gerone, L. Ferrari Barusso, M. Francesconi, L. Galli, G. Gallucci, F. Gatti, L. Gerritzen, F. Grancagnolo, E. G. Grandoni, M. Grassi, D. N. Grigoriev, M. Hildebrandt, K. Ieki, F.V. Ignatov, F. Ikeda, T. Iwamoto, S.V. Karpov, P.-R. Kettle, N. V. Khomutov, S. Kobayashi, A. Kolesnikov, N. Kravchuk, В. А. Крылов, N. A. Kuchinskiy, W. Kyle, T. Libeiro, V. L. Malyshev, A. Matsushita, M. Meucci, S. Mihara, W. Molzon, T. Mori, F. Morsani, M. Nakao, D. Nicolò, H. Nishiguchi, A. Ochi, S. Ogawa, Rina Onda, W. Ootani, A. Oya, D. Palo, M. Panareo, A. Papa, V. Pettinacci, A. Yu. Popov, F. Raffaelli, F. Renga, S. Ritt, M. Rossella, A. Rozhdestvensky, P. Schwendimann, Kohei Shimada, G. Signorelli, A. Stoykov, Masato Takahashi, G. F. Tassielli, Kazuhiro Toyoda, Y. Uchiyama, M. Usami, A. Venturini, B. Vitali, C. Voena, Kensuke Yamamoto, K. Yanai, T. Yonemoto, Keisuke Yoshida, Yu. V. Yudin · 发表于：The European Physical Journal C · 年份：2024 · DOI：10.1140/epjc/s10052-024-12415-3 · 被引用次数：18 · 研究领域：Particle Detector Development and Performance、Radiation Detection and Scintillator Technologies、Dark Matter and Cosmic Phenomena

Abstract The MEG II experiment, located at the Paul Scherrer Institut (PSI) in Switzerland, is the successor to the MEG experiment, which completed data taking in 2013. MEG II started fully operational data taking in 2021, with the goal of improving the sensitivity of the $$\upmu ^+ \rightarrow {\textrm{e}}^+ \upgamma $$ μ + → e + γ decay down to $$\sim 6 \times 10^{-14}$$ ∼ 6 × 10 - 14 almost an order of magnitude better than the current limit. In this paper, we describe the operation and performance of the experiment and give a new estimate of its sensitivity versus data acquisition time.