CSNS多丝正比室读出电子学

doi:10.11889/j.0253-3219.2015.hjs.38.050402

Nuclear Techniques ›› 2015, Vol. 38 ›› Issue (5): 50402-050402.doi: 10.11889/j.0253-3219.2015.hjs.38.050402

• NUCLEAR ELECTRONICS AND INSTRUMENTATION • Previous Articles Next Articles

Electronic readout system for MWPC detector used in CSNS

REN Hailong1,2 ZHAO Yubin2 WEN Shuangchun1 LU Ruiqi1,2

1(The Physics and Micro Electronic College of Hunan University, Changsha 410082, China) 2(Dongguan Institute of Neutron Science, Dongguan 523808, China)

Received:2014-12-17 Revised:2015-03-22 Online:2015-05-10 Published:2015-05-08

Abstract

Abstract: Background: China Spallation Neutron Source (CSNS) is a scientific facility used for studying neutron characteristics and detecting the micro structure of materials. Purpose: This study aims to obtain the position and charge information of incident neutrons for the multipurpose reflectometer of CSNS. Methods: An electronic readout system is designed to detect and handle the signals from a two-dimensional Multi-Wire Proportional Chamber (MWPC). An Application Specific Integrated Circuit (ASIC) chip VA64tap2.1, made by IDEAS company, is applied to get the position and charge information in MWPC. The readout system is comprised of a VA64tap2.1-based readout board, a firmware for Field-Programmable Gate Array (FPGA) and an application program in PC. Results: The tests results show that the system can fulfill the readout requirements, and the ASIC chip is of low noise (less than 0.35fC when connected the MWPC detector), low power dissipation (less than 0.3 mW per channel), large dynamic range (?200?+160fC) and high integration (64 channels/board). Conclusion: This electronic readout system can be used in particle position detection.

Key words: MWPC, CSNS, ASIC, Charge measurement, FPGA

REN Hailong, ZHAO Yubin, WEN Shuangchun, LU Ruiqi. Electronic readout system for MWPC detector used in CSNS[J].Nuclear Techniques, 2015, 38(5): 50402-050402.

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Electronic readout system for MWPC detector used in CSNS

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