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arXiv · 2411.18927

Lab and Beam Tests of a SiPM-readout ASIC with a Large Dynamic Range

Baohua Qi·Yong Liu·Huangchao Shi·Danqi Wang·Zhiyu Zhao·Hongbo Zhu
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Abstract

A front-end readout system with a large dynamic range is required for the high-granularity crystal electromagnetic calorimeter (ECAL) at future Higgs factories. A new commercially available ASIC, MPT2321, which offers a significantly large dynamic range for the readout of the silicon photomultiplier (SiPM), has been tested in the laboratory and at a test beam facility. The fundamental performance metrics have been characterised, including response linearity, inter-calibration factor and noise performance. To quantitatively assess the dynamic range of the chip and evaluate its feasibility for SiPM readout in high-granularity crystal ECAL, a beamtest was conducted using scintillating crystals exposed to electron beams. Beamtest results showed that the chip exhibits a promising performance in terms of a good signal-to-noise ratio and a relatively large dynamic range.

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Baohua Qi, Yong Liu, Huangchao Shi, Danqi Wang, Zhiyu Zhao, Hongbo Zhu. 2025-05-22. Lab and Beam Tests of a SiPM-readout ASIC with a Large Dynamic Range. https://doi.org/10.1088/1748-0221%2F20%2F05%2Fp05024

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