Simulation and optimization of fission fragment and α particle discrimination in coaxial fission chambers operating in pulse mode

IF 1.5 3区物理与天体物理 Q3 INSTRUMENTS & INSTRUMENTATION

Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment Pub Date : 2025-04-02 DOI:10.1016/j.nima.2025.170441

Jiecheng Yang, Jianguo Qin, Jie Yan

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引用次数: 0

Abstract

In various operational scenarios, the neutron detection process using fission chambers can be subject to interference from

α

particles and other factors. A crucial aspect of current research on fission chambers is the design and simulation customized for specific applications, aiming to improve the efficiency of their development. This study addresses these issues by employing programs such as Garfield

+ +

, GEF, and SRIM to develop a numerical toolkit for simulating fission chambers, which features a framework similar to CHESTER. The developed program is further utilized to carry out the analysis of pulse-mode coaxial fission chambers. The effects of key parameters, such as coating thickness, electrode spacing, gas pressure and composition, on the separation between

α

particles and fission fragments in pulse height spectra are investigated.

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脉冲模式下同轴裂变室裂变碎片和α粒子识别的模拟与优化

在各种操作情况下，使用裂变室的中子探测过程可能受到α粒子和其他因素的干扰。当前裂变室研究的一个关键方面是为特定应用定制设计和模拟，旨在提高其开发效率。本研究通过使用garfield++、GEF和SRIM等程序开发一个模拟裂变室的数值工具包来解决这些问题，该工具包具有类似CHESTER的框架。所开发的程序进一步用于进行脉冲模同轴裂变室的分析。研究了脉冲高度谱中涂层厚度、电极间距、气体压力和成分等关键参数对α粒子与裂变碎片分离的影响。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment 物理-光谱学

CiteScore

3.20

自引率

21.40%

发文量

787

审稿时长

1 months

期刊介绍： Section A of Nuclear Instruments and Methods in Physics Research publishes papers on design, manufacturing and performance of scientific instruments with an emphasis on large scale facilities. This includes the development of particle accelerators, ion sources, beam transport systems and target arrangements as well as the use of secondary phenomena such as synchrotron radiation and free electron lasers. It also includes all types of instrumentation for the detection and spectrometry of radiations from high energy processes and nuclear decays, as well as instrumentation for experiments at nuclear reactors. Specialized electronics for nuclear and other types of spectrometry as well as computerization of measurements and control systems in this area also find their place in the A section. Theoretical as well as experimental papers are accepted.