A linear calibration method on DNL error for energy spectrum

Lu Bo; Fu Yan-Hong; Chen Yong; Cui Wei-Wei; Wang Yu-Sa; Xu Yu-Peng; Yin Guo-He; Yang Yan-Ji; Zhang Yi; Huo Jia; Li Wei; Cheng Tian-Xiang; Hu Wei; Han Da-Wei; Li Mao-Shun; Wang Juan; Wang Yu; Liu Xiao-Yang; Zhu Yue; Zhao Zhong-Yi; Zhang Ya

arXiv · 1404.6303

A linear calibration method on DNL error for energy spectrum

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Abstract

A calibration method aimed for the differential nonlinearity (DNL) error of the Low Energy X-ray Instrument (LE) onboard the Hard X-ray Modulation Telescope (HXMT) is presented, which is independent with electronic systems used as testing platform and is only determined by the analog-to-digital converter (ADC) itself. Exploring this method, ADCs that are used within the flight model phase of HXMT-LE can be calibrated individually and independently by a non-destructive and low-cost way, greatly alleviating the complexity of the problem. As a result, the performance of the energy spectrum can be significantly improved, further more, noise reduced and resolution enhanced.

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Lu Bo, Fu Yan-Hong, Chen Yong, Cui Wei-Wei, Wang Yu-Sa, Xu Yu-Peng, Yin Guo-He, Yang Yan-Ji, Zhang Yi, Huo Jia, Li Wei, Cheng Tian-Xiang, Hu Wei, Han Da-Wei, Li Mao-Shun, Wang Juan, Wang Yu, Liu Xiao-Yang, Zhu Yue, Zhao Zhong-Yi, Zhang Ya. 2014-04-25. A linear calibration method on DNL error for energy spectrum. https://arxiv.org/abs/1404.6303

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