Fast charge preamplifier for high -sensitivity fission chamber

被引：5
作者：
Yuan, Guoliang [1 ]
Yang, Qingwei [1 ]
Wen, Zuowei [1 ]
Zhao, Li [1 ]
Wei, Lingfeng [1 ]
Li, Yong [1 ]
机构：
[1] Southwestern Inst Phys, Chengdu 610225, Peoples R China
来源：
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 2020年 / 968卷
基金：
中国国家自然科学基金;
关键词：
NEUTRON-FLUX MONITOR; DETECTOR; TIME;
D O I：
10.1016/j.nima.2020.163977
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
A fast preamplifier was built with discrete JFET and operational amplifier for high-sensitivity fission chamber detector. Noise characteristics of preamplifier and detector were researched through measuring equivalent noise charge, processing the preamplifier output and analyzing pulse height. Its rise time is 56 ns with total input capacitance of 810 pF which includes preamplifier, detector and 5-meter-long cable. Considering the rise time and noise characteristics, the most suitable shaping time is 0.1μs. © 2020
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页数：5
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