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arXiv · 2312.02834

The optimization, design and performance of the FBCM23 ASIC for the upgraded CMS beam monitoring system

Jan Kaplon·Grzegorz Wegrzyn·Konstantin Shibin·Marnix Barendregt
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Abstract

We present the development of the FBCM23 ASIC designed for the Phase-II upgrade of the Fast Beam Condition Monitoring (FBCM) system built at the CMS experiment which will replace the present luminometer based on the BCM1F ASIC [1]. The FBCM system should provide reliable luminosity measurement with 1ns time resolution enabling the detection of beam-induced background. The FBCM23 ASIC comprises 6 channels of the fast front-end amplifier working in transimpedance configuration, booster amplifier, and leading edge discriminator. The complete processing chain provides an overall shaping function equivalent to the CR-RC$^3$ filter. The paper will show the optimization of the design, overall architecture, and the detailed implementation in a CMOS 65nm process as well as preliminary electrical performance.

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Jan Kaplon, Grzegorz Wegrzyn, Konstantin Shibin, Marnix Barendregt. 2023-12-05. The optimization, design and performance of the FBCM23 ASIC for the upgraded CMS beam monitoring system. https://doi.org/10.1088/1748-0221%2F19%2F02%2Fc02026

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