基于耗尽型单片有源像素传感器的 Belle II 顶点探测器升级研发
仪器与探测器
2026-07-01 v1 高能物理 - 实验
摘要
基于CMOS耗尽型单片有源像素传感器技术的Belle II实验顶点探测器升级项目，计划在2032年至2034年第二次长期停机期间，与SuperKEKB对撞机相互作用区的重大改造同时进行。目前正在研发的名为OBELIX的MAPS传感器，源自TJ-Monopix2的后续产品，并进行了修改以确保与Belle II触发系统的兼容性。新的顶点探测器由两层四个自支撑的连续OBELIX传感器和三层安装在机械支撑结构上的分立OBELIX传感器组成，读出柔性电路附着在传感器上。探测器围绕束流管呈圆柱形排列，半径范围从14毫米到140毫米。为了提升物理性能，需要最小化物质预算。我们介绍了该项目的概况及其最新进展，特别强调了采用铝导体的低物质预算柔性电路的开发。
引用
@article{arxiv.2607.00741,
title = {Development for the Belle II vertex detector upgrade with depleted monolithic active pixel sensors},
author = {Y. Onuki and M. Babeluk and T. Bergauer and M. Friedl and C. Irmler and B. Pilsl and R. Russo and C. Schwanda and L. Gaioni and V. Re and E. Riceputi and G. Traversi and S. Giroletti and L. Ratti and G. F. Benfratello and S. Bettarini and F. Bosi and G. Casarosa and L. Corona and F. Forti and A. Gabrielli and M. Massa and L. Massaccesi and M. Minuti and A. Moggi and S. Mondal and G. Rizzo and M. Rovini and A. Taffara and M. Barbero and P. Barrillon and R. Boudagga and P. Breugnon and D. Fougeron and P. Pangaud and J. Serrano and V. Vobbilisetti and D. Xu and D. Auguste and J. Bonis and Y. Peinaud and M. Winter and J. Baudot and G. Bertolone and A. Dorokhov and G. Dujany and L. Federici and C. Finck and A. Himmi and C. Hu-Guo and A. Kumar and M. Maushart and F. Morel and H. Pham and I. Ripp-Baudot and R. Sefri and P. Stavroulakis and I. Valin and F. Bernlochner and C. Bespin and J. Dingfelder and T. Kishishita and H. Krüger and L. Schall and M. Vogt and M. Karagounis and Y. Buch and A. Frey and B. Schwenker and M. Schwickardi and K. Hara and D. Jeans and K. R. Nakamura and Y. Okazaki and T. Higuchi and S. Wang and C. Lacasta and C. Marinas and J. Mazorra de Cos and L. Molina-Bueno and A. Bevan and M. Bona and D. Howgill and W. Song and J. Gong and X. Gao and A. Fernandez Prieto and A. Gallas Torreira},
journal= {arXiv preprint arXiv:2607.00741},
year = {2026}
}
备注
10 pages, 9 figures