The TaichuPix1: A Monolithic Active Pixel Sensor with fast in-pixel readout electronics for the CEPC vertex detector
T. Wu, S. Grinstein, R. Casanova, Y. Zhang, W. Wei, X. Wei, J. Dong,, L. Zhang, X. Li, Z. Liang, J. Guimaraes da Costa, W. Lu, L. Li, J. Wang, R., Zheng, P. Yang, G. Huang

TL;DR
This paper introduces TaichuPix1, a monolithic active pixel sensor with fast in-pixel readout electronics designed for the CEPC vertex detector, demonstrating high-speed data transmission and effective charge collection.
Contribution
It presents the design, implementation, and experimental validation of a novel MAPS prototype with a data-driven structure and high-speed readout architecture for particle detection.
Findings
Successful charge collection verified with radioactive source
Serializer operates correctly up to 3 Gbps
Analog front-end shows fast signal rise and short time walk
Abstract
The proposed Circular Electron Positron Collider (CEPC) imposes new challenges for the vertex detector in terms of high resolution, low material, fast readout and low power. The Monolithic Active Pixel Sensor (MAPS) technology has been chosen as one of the most promising candidates to satisfy these requirements. A MAPS prototype, called TaichuPix1, based on a data-driven structure, together with a column drain readout architecture, benefiting from the ALPIDE and FE-I3 approaches, has been implemented to achieve fast readout. This paper presents the overall architecture of TaichuPix1, the experimental characterization of the FE-I3-like matrix, the threshold dispersion, the noise distribution of the pixels and verifies the charge collection using a radioactive source. These results prove the functionality of the digital periphery and serializer are able to transmit the collected charge to…
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