Counting‐loss correction method based on dual‐exponential impulse shaping. (25th September 2020)

• Record Type: Journal Article
• Authors: Liu, Yi; Wang, Ming; Wan, Wenjie; Zhou, Jianbin; Hong, Xu; Liu, Fei; Yu, Jie
• Is Part Of: Journal of synchrotron radiation. Volume 27:Part 6(2020)
• Page Start: 1609
• Page End: 1613
• Publication Date: 2020-09-25
• Subjects: counting loss correction -- dual‐exponential signal -- unit‐impulse‐response -- dead‐time; Synchrotron radiation -- Periodicals; Free electron lasers -- Periodicals; 539.73505
• DOI: 10.1107/S1600577520010954
• Languages: English
• ISSNs: 0909-0495

Abstract

Abstract : A new dual‐exponential impulse shaping method is proposed, and its deployment in hardware to test its performance is shown. Abstract : Under the condition of high counting rate, the phenomenon of nuclear pulse signal pile‐up using a single exponential impulse shaping method is still very serious, and leads to a severe loss in counting rate. A real nuclear pulse signal can be expressed as a dual‐exponential decay function with a certain rising edge. This paper proposes a new dual‐exponential impulse shaping method and shows its deployment in hardware to test its performance. The signal of a high‐performance silicon drift detector under high counting rate in an X‐ray fluorescence spectrometer is obtained. The result of the experiment shows that the new method can effectively shorten the dead‐time caused by nuclear signal pile‐up and correct the counting rate.