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
TL;DR
This paper introduces a high-speed, 8-channel waveform digitizer with 500 MS/s sampling rate and 14-bit resolution, designed for PandaX dark matter experiments, supporting both trigger modes and tested in situ.
Contribution
The paper presents a novel 8-channel waveform digitizer with dual readout modes and high sampling rate tailored for dark matter detection experiments.
Findings
Successful in situ testing with PandaX-4T data
Supports both external-trigger and triggerless readout
Achieves 500 MS/s sampling rate with 14-bit resolution
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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