中子三轴谱仪二维位置灵敏探测器标定

二维位置灵敏探测器(PSD)参数是中子散射谱仪实验数据分析的必要参数,主要用于角度和谱形修正。为此提出了PSD标定方法,并对冷中子非弹性散射/三轴谱仪所使用的PSD探测器进行了标定,获得了工作偏压、像素大小、空间分辨、探测效率及效率均匀性等数据。实验结果表明,探测器的工作偏压为4.2-4.4kV、像素大小为0.32mm(H&V)、探测器的空间分辨为2.15mm(H)×2.04mm(V)、探测效率为90.47%、效率均匀性优于10%,达到了谱仪设计要求。所建立的探测器测试方法对探测器研制和实验数据分析具有参考价值。...

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Published in核技术 Vol. 36; no. 12; pp. 34 - 38
Main Author 黄朝强 宋建明 陈波 盛六四
Format Journal Article
LanguageChinese
Published 中国科学技术大学核科学技术学院 合肥230026%中国工程物理研究院核物理与化学研究所 绵阳621900%中国科学技术大学核科学技术学院 合肥230026 2013
中国工程物理研究院核物理与化学研究所 绵阳621900
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ISSN0253-3219

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Summary:二维位置灵敏探测器(PSD)参数是中子散射谱仪实验数据分析的必要参数,主要用于角度和谱形修正。为此提出了PSD标定方法,并对冷中子非弹性散射/三轴谱仪所使用的PSD探测器进行了标定,获得了工作偏压、像素大小、空间分辨、探测效率及效率均匀性等数据。实验结果表明,探测器的工作偏压为4.2-4.4kV、像素大小为0.32mm(H&V)、探测器的空间分辨为2.15mm(H)×2.04mm(V)、探测效率为90.47%、效率均匀性优于10%,达到了谱仪设计要求。所建立的探测器测试方法对探测器研制和实验数据分析具有参考价值。
Bibliography:31-1342/TL
HUANG Chaoqiang SONG Jianming CHEN BO1 SHENG Liusi 1 (Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, Mianyang 621900, China) 2(College of Nuclear Science and Technology, University of Science and Technology of China, Hefei 230026, China)
Detector calibration, Position sensitive detector, Spatial resolution, Detection efficiency, Black detector
Background: A 200 mm×200 mm two-dimensional positional sensitive detector (PSD) has been designd and constructed for the cold-neutron triple axis spectrometer (CTAS). The parameters of the PSD are necessary for evaluation and analysis of neutron scattering pattern obtained on CTAS and other instrument using PSD, mainly for the correction of angle and spectral shape due to the unequal solid angle and inhomogeneous efficiency of the fiat PSD. Purpose: In order to obtain the working bias voltage, pixel size, spatial resolution, detection efficiency and its uniformity, a calibration method was proposed and tested for the PSD of CTA
ISSN:0253-3219