Beam test of a 180 nm CMOS Pixel Sensor for the CEPC vertex detector

Tianya Wu; Shuqi Li; Wei Wang; Jia Zhou; Ziyue Yan; Yiming Hu; Xiaoxu Zhang; Zhijun Liang; Wei Wei; Ying Zhang; Xiaomin Wei; Xinhui Huang; Lei Zhang; Ming Qi; Hao Zeng; Xuewei Jia; Jun Hu; Jinyu Fu; Hongyu Zhang; Gang Li; Linghui Wu; Mingyi Dong; Xiaoting Li; Raimon Casanova; Liang Zhang; Jianing Dong; Jia Wang; Ran Zheng; Weiguo Lu; Sebastian Grinstein; João Guimarães da Costa

arXiv · 2311.05932

Beam test of a 180 nm CMOS Pixel Sensor for the CEPC vertex detector

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Abstract

The proposed Circular Electron Positron Collider (CEPC) imposes new challenges for the vertex detector in terms of pixel size and material budget. A Monolithic Active Pixel Sensor (MAPS) prototype called TaichuPix, based on a column drain readout architecture, has been developed to address the need for high spatial resolution. In order to evaluate the performance of the TaichuPix-3 chips, a beam test was carried out at DESY II TB21 in December 2022. Meanwhile, the Data Acquisition (DAQ) for a muti-plane configuration was tested during the beam test. This work presents the characterization of the TaichuPix-3 chips with two different processes, including cluster size, spatial resolution, and detection efficiency. The analysis results indicate the spatial resolution better than 5 $\mu m$ and the detection efficiency exceeds 99.5 % for both TaichuPix-3 chips with the two different processes.

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Tianya Wu, Shuqi Li, Wei Wang, Jia Zhou, Ziyue Yan, Yiming Hu, Xiaoxu Zhang, Zhijun Liang, Wei Wei, Ying Zhang, Xiaomin Wei, Xinhui Huang, Lei Zhang, Ming Qi, Hao Zeng, Xuewei Jia, Jun Hu, Jinyu Fu, Hongyu Zhang, Gang Li, Linghui Wu, Mingyi Dong, Xiaoting Li, Raimon Casanova, Liang Zhang, Jianing Dong, Jia Wang, Ran Zheng, Weiguo Lu, Sebastian Grinstein, João Guimarães da Costa. 2023-11-10. Beam test of a 180 nm CMOS Pixel Sensor for the CEPC vertex detector. https://arxiv.org/abs/2311.05932

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