Performance of the diamond-based beam-loss monitor system of Belle II

9 Feb 2021 · S. Bacher, G. Bassi, L. Bosisio, G. Cautero, P. Cristaudo, M. Dorigo, A. Gabrielli, D. Giuressi, K. Hara, Y. Jin, C. La Licata, L. Lanceri, R. Manfredi, H. Nakayama, K. R. Nakamura, A. Natochii, A. Paladino, G. Rizzo, L. Vitale, H. Yin ·

We designed, constructed and have been operating a system based on single-crystal synthetic diamond sensors, to monitor the beam losses at the interaction region of the SuperKEKB asymmetric-energy electron-positron collider. The system records the radiation dose-rates in positions close to the inner detectors of the Belle II experiment, and protects both the detector and accelerator components against destructive beam losses, by participating in the beam-abort system. It also provides complementary information for the dedicated studies of beam-related backgrounds. We describe the performance of the system during the commissioning of the accelerator and during the first physics data taking.

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Performance of the diamond-based beam-loss monitor system of Belle II

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