A 500 MS/s waveform digitizer for PandaX dark matter experiments

Changda He; Jianglai Liu; Xiangxiang Ren; Xiaofeng Shang; Xikai Wei; Mingxin Wang; Jijun Yang; Jinqun Yang; Yong Yang; Guangping Zhang; Qibin Zheng

doi:10.1088/1748-0221/16/12/t12015

arXiv · 2108.11804

A 500 MS/s waveform digitizer for PandaX dark matter experiments

Changda He·Jianglai Liu·Xiangxiang Ren·Xiaofeng Shang·Xikai Wei·Mingxin Wang·Jijun Yang·Jinqun Yang·Yong Yang·Guangping Zhang·Qibin Zheng

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Abstract

Waveform digitizers are key readout instruments in particle physics experiments. In this paper, we present a waveform digitizer for the PandaX dark matter experiments. It supports both external-trigger readout and triggerless readout, accommodating the needs of low rate full-waveform readout and channel-independent low threshold acquisition, respectively. This digitizer is a 8-channel VME board with a sampling rate of 500 MS/s and 14-bit resolution for each channel. A digitizer system consisting of 72 channels has been tested in situ of the PandaX-4T experiment. We report the system performance with real data.

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Changda He, Jianglai Liu, Xiangxiang Ren, Xiaofeng Shang, Xikai Wei, Mingxin Wang, Jijun Yang, Jinqun Yang, Yong Yang, Guangping Zhang, Qibin Zheng. 2021-08-26. A 500 MS/s waveform digitizer for PandaX dark matter experiments. https://doi.org/10.1088/1748-0221/16/12/t12015

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