An energy spectrum smoothing algorithm based on TCC-DEE
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A smoothing algorithm for energy spectrum based on differential nonlinearity (DNL) error elimination with total counts conservation for high-energy particle detector systems is presented. It is physics based and is only determined by the DNL error of analog-to-digital converter device itself. From the experimental results, this algorithm slightly improves both noise performance and energy resolution, while greatly reduces the testing errors by almost a half compared to their original values. In addition, the reduced-\(\chi ^2\) statistic for evaluating the Gaussian fitting goodness is significantly reduced by almost two orders after smoothing. As a typical verification example, this algorithm is successfully applied in the ground calibration of the Low Energy X-ray Instrument onboard the Hard X-ray Modulation Telescope (HXMT-LE) satellite, lending it a powerful, nondestructive and low-cost tool for both calibration and data processing for high-energy particle detector systems.
KeywordsSmoothing algorithm Energy spectrum TCC-DEE DNL error Low-cost
- 8.B. Lu, Y.S. Wang, Y. Chen et al., Hard X-ray imaging techniques based on CCD and CsI Scintillator. Optic. Precis. Eng. (2012) (in press) Google Scholar
- 18.IEEE Standard for Terminology and Test Methods for Analog-to-Digital Converters, IEEE Standard 1241–2010, 2011, 46–64. doi: 10.1109/IEEESTD.2011.5692956
- 20.DS360-Ultra-low distortion function generator, Datasheet. Stanford Research Systems.http://www.thinksrs.com/downloads/PDFs/Catalog/DS360c.pdf
- 22.Y.S. Zhu, Probability and Statistics in Experimental Physics (Science Press, Beijing, 2006), pp. 410–425Google Scholar