An improved method of energy calibration for position-sensitive silicon detectors

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Ming-Dao Sun, Tian-Heng Huang, Zhong Liu, Bing Ding, Hua-Bin Yang, Zhi-Yuan Zhang, Jian-Guo Wang, Long Ma, Lin Yu, Yong-Sheng Wang, Zai-Guo Gan and Xiao-Hong Zhou. An improved method of energy calibration for position-sensitive silicon detectors[J]. Chinese Physics C, 2016, 40(4): 046202. doi: 10.1088/1674-1137/40/4/046202
Ming-Dao Sun, Tian-Heng Huang, Zhong Liu, Bing Ding, Hua-Bin Yang, Zhi-Yuan Zhang, Jian-Guo Wang, Long Ma, Lin Yu, Yong-Sheng Wang, Zai-Guo Gan and Xiao-Hong Zhou. An improved method of energy calibration for position-sensitive silicon detectors[J]. Chinese Physics C, 2016, 40(4): 046202.  doi: 10.1088/1674-1137/40/4/046202 shu
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Received: 2015-06-23
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    Supported by 100 Person Project of the Chinese Academy of Sciences and the National Natural Science Foundation of China(11405224 and 11435014)

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An improved method of energy calibration for position-sensitive silicon detectors

    Corresponding author: Zhong Liu,
Fund Project:  Supported by 100 Person Project of the Chinese Academy of Sciences and the National Natural Science Foundation of China(11405224 and 11435014)

Abstract: Energy calibration of resistive charge division-based position-sensitive silicon detectors is achieved by parabolic fitting in the traditional method, where the systematic variations of vertex and curvature of the parabola with energy must be considered. In this paper we extend the traditional method in order to correct the fitting function, simplify the procedure of calibration and improve the experimental data quality. Instead of a parabolic function as used in the traditional method, a new function describing the relation of position and energy is introduced. The energy resolution of the 8.088 MeV α decay of 213Rn is determined to be about 87 keV(FWHM), which is better than the result of the traditional method, 104 keV(FWHM). The improved method can be applied to the energy calibration of resistive charge division-based position-sensitive silicon detectors with various performances.

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