Upgrade of Belle II Vertex Detector with CMOS Pixel Technology
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.
Cite
@article{arxiv.2311.13360,
title = {Upgrade of Belle II Vertex Detector with CMOS Pixel Technology},
author = {M. Schwickardi and M. Babeluk and M. Barbero and J. Baudot and T. Bergauer and G. Bertolone and S. Bettarini and F. Bosi and P. Breugnon and Y. Buch and G. Casarosa and G. Dujany and C. Finck and F. Forti and A. Frey and A. Himmi and C. Irmler and A. Kumar and C. Marinas and M. Massa and L. Massaccesi and J. Mazzora de Cos and M. Minuti and S. Mondal and P. Pangaud and H. Pham and I. Ripp-Baudot and G. Rizzo and B. Schwenker and I. Valin},
journal= {arXiv preprint arXiv:2311.13360},
year = {2023}
}
Comments
8 pages, 8 figures, Proceedings for 24th international Workshop on Radiation Imaging Detectors,25-29 JUNE 20233 Oslo