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
TL;DR
This paper introduces a simple, ADC-based calibration method for correcting DNL errors in the HXMT-LE instrument, improving energy spectrum accuracy without complex electronic testing.
Contribution
A novel, ADC-only calibration technique for DNL errors that simplifies and enhances the calibration process for space-based X-ray instruments.
Findings
Significant improvement in energy spectrum performance
Reduced noise and enhanced resolution
Calibration method is non-destructive and low-cost
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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Taxonomy
TopicsParticle Detector Development and Performance · Medical Imaging Techniques and Applications · Calibration and Measurement Techniques