二维多丝室探测器读出方法的优化
发布时间：2018-09-13 09:52
【摘要】：中国散裂中子源将建设一台基于~3He气体的二维多丝室,作为多功能反射谱仪束线的中子探测器.基于已有的研究,为优化选择二维多丝室探测器的丝结构,本文研究了三种不同的丝结构,并采用重心读出方法和数字读出方法进行了探测器的性能测量,得到了满足多功能反射谱仪探测器需求的读出方法.实验结果表明:对同种丝结构的二维多丝室探测器,重心读出方法的位置分辨和成像性能都好于数字读出方法;基于重心法读出的多丝室探测器位置分辨率可以达到约160μm,基于数字读出方法的多丝室探测器位置分辨率可以达到约400μm.优化设计的丝结构为:基于重心读出法的阳极丝间距1.5 mm、读出通道间距4 mm,基于数字读出法的阳极丝间距1.5 mm、读出通道间距2 mm.优化设计的丝结构均能满足谱仪的位置分辨要求.
[Abstract]:China spallation neutron source will build a two-dimensional multifilament chamber based on 3He gas as a neutron detector for the beam line of a multifunctional reflectance spectrometer. Based on the existing research, in order to optimize the wire structure of the two-dimensional multifilament chamber detector, three different wire structures are studied, and the performance of the detector is measured by the barycenter readout method and the digital readout method. A readout method to meet the requirements of multifunctional reflectance spectrometer detector is obtained. The experimental results show that the position resolution and imaging performance of the barycenter readout method are better than that of the digital readout method. The position resolution of multi-wire chamber detector based on barycenter method can reach about 160 渭 m, and the position resolution of multi-wire chamber detector based on digital readout method can reach about 400 渭 m. The optimized wire structure is as follows: anode wire spacing 1.5 mm, readout channel spacing based on barycenter readout method 4 mm, anode wire spacing 1.5 mm, readout channel spacing 2 mm. based on digital readout method The optimized wire structure can meet the requirements of position resolution of spectrometer.
【作者单位】： 兰州大学核科学与技术学院;核探测与核电子学国家重点实验室;中国科学院高能物理研究所;中国科学院大学;
【基金】：国家自然科学基金(批准号:11675197,11275224);国家自然科学基金青年基金(批准号:11305187)资助的课题~~
【分类号】：O571.53
本文编号：2240829
[Abstract]:China spallation neutron source will build a two-dimensional multifilament chamber based on 3He gas as a neutron detector for the beam line of a multifunctional reflectance spectrometer. Based on the existing research, in order to optimize the wire structure of the two-dimensional multifilament chamber detector, three different wire structures are studied, and the performance of the detector is measured by the barycenter readout method and the digital readout method. A readout method to meet the requirements of multifunctional reflectance spectrometer detector is obtained. The experimental results show that the position resolution and imaging performance of the barycenter readout method are better than that of the digital readout method. The position resolution of multi-wire chamber detector based on barycenter method can reach about 160 渭 m, and the position resolution of multi-wire chamber detector based on digital readout method can reach about 400 渭 m. The optimized wire structure is as follows: anode wire spacing 1.5 mm, readout channel spacing based on barycenter readout method 4 mm, anode wire spacing 1.5 mm, readout channel spacing 2 mm. based on digital readout method The optimized wire structure can meet the requirements of position resolution of spectrometer.
【作者单位】： 兰州大学核科学与技术学院;核探测与核电子学国家重点实验室;中国科学院高能物理研究所;中国科学院大学;
【基金】：国家自然科学基金(批准号:11675197,11275224);国家自然科学基金青年基金(批准号:11305187)资助的课题~~
【分类号】：O571.53
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