A novel method of encoded multiplexing readout for micro-pattern gas detectors

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Bin-Xiang Qi, Shu-Bin Liu, Heng Ji, Zhong-Tao Shen, Si-Yuan Ma, Hong-Bang Liu, Wen-Qian Huang and Qi An. A novel method of encoded multiplexing readout for micro-pattern gas detectors[J]. Chinese Physics C, 2016, 40(5): 056102. doi: 10.1088/1674-1137/40/5/056102
Bin-Xiang Qi, Shu-Bin Liu, Heng Ji, Zhong-Tao Shen, Si-Yuan Ma, Hong-Bang Liu, Wen-Qian Huang and Qi An. A novel method of encoded multiplexing readout for micro-pattern gas detectors[J]. Chinese Physics C, 2016, 40(5): 056102.  doi: 10.1088/1674-1137/40/5/056102 shu
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Received: 2015-09-08
Revised: 2015-11-23
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    Supported by National Natural Science Foundation of China(11222552, 11265003)

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A novel method of encoded multiplexing readout for micro-pattern gas detectors

    Corresponding author: Bin-Xiang Qi,
    Corresponding author: Shu-Bin Liu,
  • 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.  University of Chinese Academy of Sciences, Beijing 100049, China
Fund Project:  Supported by National Natural Science Foundation of China(11222552, 11265003)

Abstract: The requirement of a large number of electronic channels poses a big challenge to the further applications of Micro-pattern Gas Detectors(MPGDs). By using the redundancy that at least two neighboring strips record the signal of a particle, a novel method of encoded multiplexing readout for MPGDs is presented in this paper. The method offers a feasible and easily-extensible way of encoding and decoding, and can significantly reduce the number of readout channels. A verification test was carried out on a 5 cm×5 cm Thick Gas Electron Multiplier(THGEM) detector using a 8 keV Cu X-ray source with 100μ slit, where 166 strips were read out by 21 encoded readout channels. The test results show good linearity in its position response, and the spatial resolution root-mean-square(RMS) of the test system is about 260μ. This method has potential to build large area detectors and can be easily adapted to other detectors like MPGDs.

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