Design of CSNS Spectrometer T0 Signal Fan-out Equipment

Peng ZHU; Jajie LI; Wenxiang ZHANG; Yuliang ZHANG; Dapeng JIN; Ge LEI; Xuan WU; Yongcheng HE; Fengqin GUO; Mingtao KANG; Lin WANG

doi:10.11804/NuclPhysRev.37.2020020

Volume 37 Issue 2

Jul. 2020

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Nuclear Physics Review > 2020 > 37(2): 199-208. > DOI: 10.11804/NuclPhysRev.37.2020020

Peng ZHU, Jajie LI, Wenxiang ZHANG, Yuliang ZHANG, Dapeng JIN, Ge LEI, Xuan WU, Yongcheng HE, Fengqin GUO, Mingtao KANG, Lin WANG. Design of CSNS Spectrometer T0 Signal Fan-out Equipment[J]. Nuclear Physics Review, 2020, 37(2): 199-208. DOI: 10.11804/NuclPhysRev.37.2020020

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Design of CSNS Spectrometer T0 Signal Fan-out Equipment

Peng ZHU^{1, 2, 3,},
Jajie LI^{1, 2, 3},
Wenxiang ZHANG^{1, 2},
Yuliang ZHANG^{1, 2, 3},
Dapeng JIN^{1, 2, 3},
Ge LEI^{1, 2, 3, ,},
Xuan WU^{1, 2, 3},
Yongcheng HE^{1, 2, 3},
Fengqin GUO^{1, 2},
Mingtao KANG^{1, 2},
Lin WANG^{1, 2, 3}

1.
Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
2.
Spallation Neutron Source Science Center, Dongguan 523803, Guangdong, China
3.
University of Chinese Academy of Sciences, Beijing 100049, China

Funds: Project of Youth Innovation Promotion Association, Chinese Academy of Sciences (Y9291420K2)

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Corresponding author:
LEI Ge, E-mail: leige@ihep.ac.cn.
Received Date: March 12, 2020
Revised Date: April 29, 2020

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Abstract

The high accuracy and reliability of the T0 signals is one of the most important prerequisites for Chinese Spallation Neutron Source(CSNS) target station spectrometer. Based on the CPLD(Complex Programmable Logic Device) and PMC(Peripheral Mezzanine Card) mother-daughter structure, T0 signal fan-out instruments were designed with a distributed architecture, including a special trigger signal receiver for the neutron chopper with 24 V level trigger. Before the first 1.6 GeV proton beam hits the target, the delay of all T0 signals have been adjusted correctly. These T0 signal fan-out instruments have superior flexibility, maintainability, scalability, which have been working for more than three years, and the whole T0 timing system has run smoothly and achieved high reliability. It has accumulated valuable experience for the higher demand of T0 signal fan-out instruments at the second phase spectrometer in the future.
- CSNS T0 signal system,
- distributed architecture,
- special home-make board,
- transmission delay

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