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

作者：Sun, Ming-Dao; Huang, Tian-Heng; Liu, Zhong^*; Ding, Bing; Yang, Hua-Bin; Zhang, Zhi-Yuan; Wang, Jian-Guo; Ma, Long; Yu, Lin; Wang, Yong-Sheng; Gan, Zai-Guo; Zhou, Xiao-Hong

来源：Chinese Physics C, 2016, 40(4): 046202.

DOI：10.1088/1674-1137/40/4/046202

• resistive charge division
• position-energy correlation
• energy calibration
• energy resolution

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 alpha decay of Rn-213 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.

• 出版日期2016-4
• 单位中国科学院大学; 中国科学院近代物理研究所; 兰州大学