Design and Testing of Cherenkov Telescope Readout Electronics Prototype Based on Switched Capacitor Array

Liujiang YAN; Lei ZHAO; Jiajun QIN; Jinliang GU; Xiongbo YAN; Zhenyan LI; Qi AN

doi:10.11804/NuclPhysRev.40.2022035

Volume 40 Issue 2

Jun. 2023

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Nuclear Physics Review > 2023 > 40(2): 221-228. > DOI: 10.11804/NuclPhysRev.40.2022035

Liujiang YAN, Lei ZHAO, Jiajun QIN, Jinliang GU, Xiongbo YAN, Zhenyan LI, Qi AN. Design and Testing of Cherenkov Telescope Readout Electronics Prototype Based on Switched Capacitor Array[J]. Nuclear Physics Review, 2023, 40(2): 221-228. DOI: 10.11804/NuclPhysRev.40.2022035

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Design and Testing of Cherenkov Telescope Readout Electronics Prototype Based on Switched Capacitor Array

Liujiang YAN^{1, 2,},
Lei ZHAO^{1, 2, ,},
Jiajun QIN^{1, 2},
Jinliang GU^{1, 2},
Xiongbo YAN^{3, 4},
Zhenyan LI^{1, 2},
Qi AN^{1, 2}

1.
State Key Laboratory of Particle Detection and Electronics, University of Science and Technology of China, Hefei 230026, China
2.
Department of Modern Physics, University of Science and Technology of China, Hefei 230026, China
3.
Institute of High Energy Physics Chinese Academy of Sciences, Beijing 100049, China
4.
School of Physical Sciences, University of Chinese Academy of Sciences, Beijing 100049, China

Funds: Youth Innovation Promotion Association, Chinese Academy of Sciences.

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Corresponding author:
Lei ZHAO, E-mail: zlei@ustc.edu.cn
Received Date: March 17, 2022
Revised Date: May 20, 2022

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Abstract

Abstract

Aiming at the requirement for cosmic ray detection in Imaging Atmospheric Cherenkov Telescopes(IACT) using silicon photomultiplier(SiPM) detectors, a prototype of readout electronics is designed based on waveform digitization using the Switched Capacitor Array(SCA) ASIC. The prototype is able to read out SiPM detector signals with a wide dynamic range and then calculate the time and charge information of the input signal. The design scheme and structure of the readout electronics prototype are presented in this paper, and a series of tests are conducted to verify its performance. The preliminary results show that the time resolution of the readout system prototype is better than 800 ps RMS within the full dynamic range. The charge resolution is better than 30% at 5 P.E. and is better than 3% at 8 000 P.E.. The test results indicate that the readout system prototype meets the design requirements.
- switched capacitor array,
- waveform digitization,
- time measurement,
- charge measurement

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