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A General-Purpose Digital Pulse-Shape Discrimination Algorithm

Nakhostin, M. (2019) A General-Purpose Digital Pulse-Shape Discrimination Algorithm IEEE Transactions on Nuclear Science.

A General-Purpose Digital Pulse-Shape Discrimination Algorithm.pdf - Accepted version Manuscript

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Digital pulse-shape discrimination (PSD) systems are widely used to extract various kinds of information from the shape of output pulses of radiation detectors. Such systems replace the traditional analog PSD circuits with numerical algorithms running on a digital processor which makes them more flexible for implementing various PSD methods. However, the available digital PSD algorithms have been generally tailored to the characteristics of the concerned detectors which limits their general use. Here, for the purpose of building a general-purpose digital PSD module, we present a PSD algorithm that with minimum alterations can be used with a wide range of radiation detectors. Our approach is based on using the cosine similarity measure to quantify the variations in the shape of detectors’ pulses with respect to the shape of a unit step pulse. The method is described in details, and the results of the test experiments with different types of radiation detectors, including a boron tetrafluoride (BF3) proportional counter, a liquid scintillation detector, and a high purity germanium (HPGe) detector are shown. The performance of the algorithm is also compared to that of the common rise-time discrimination method.

Item Type: Article
Divisions : Faculty of Engineering and Physical Sciences > Physics
Authors :
Date : 11 April 2019
DOI : 10.1109/TNS.2019.2910153
Copyright Disclaimer : © 2019 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
Uncontrolled Keywords : Digital Signal Processing; Pulse-Shape Discrimination; Semiconductor Detectors; Scintillation Detectors; Proportional Counters; Cosine Similarity
Depositing User : Clive Harris
Date Deposited : 07 May 2019 14:23
Last Modified : 07 May 2019 14:26

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