학술논문
Upgrade of Belle II Vertex Detector with CMOS Pixel Technology
Document Type
Working Paper
Author
Schwickardi, M.; Babeluk, M.; Barbero, M.; Baudot, J.; Bergauer, T.; Bertolone, G.; Bettarini, S.; Bosi, F.; Breugnon, P.; Buch, Y.; Casarosa, G.; Dujany, G.; Finck, C.; Forti, F.; Frey, A.; Himmi, A.; Irmler, C.; Kumar, A.; Marinas, C.; Massa, M.; Massaccesi, L.; de Cos, J. Mazzora; Minuti, M.; Mondal, S.; Pangaud, P.; Pham, H.; Ripp-Baudot, I.; Rizzo, G.; Schwenker, B.; Valin, I.
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Subject
Language
Abstract
The Belle II experiment at KEK in Japan considers upgrading its vertex detector system to address the challenges posed by high background levels caused by the increased luminosity of the SuperKEKB collider. One proposal for upgrading the vertex detector aims to install a 5-layer all monolithic pixel vertex detector based on fully depleted CMOS sensors in 2027. The new system will use the OBELIX MAPS chips to improve background robustness and reduce occupancy levels through small and fast pixels. This causes better track finding, especially for low transverse momenta tracks. This text will focus on the predecessor of the OBELIX sensor, the TJ-Monopix2, presenting laboratory and test beam results on pixel response, efficiency, and spatial resolution.
Comment: 8 pages, 8 figures, Proceedings for 24th international Workshop on Radiation Imaging Detectors,25-29 JUNE 20233 Oslo
Comment: 8 pages, 8 figures, Proceedings for 24th international Workshop on Radiation Imaging Detectors,25-29 JUNE 20233 Oslo