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Journal articles
Digital pulse processing and optimization of the front-end electronics for nuclear instrumentation
Abstract : This article describes an algorithm developed for the digital processing of signals provided by a high efficiency
well-type NaI(Tl) detector used to apply the 4$\pi \gamma$ technique. In order to achieve a low-energy
threshold, a new front-end electronics has been specifically designed to optimize the coupling to an
analog-to-digital converter (14 bit, 125 MHz) connected to a digital development kit produced by
Altera (c) . The digital pulse processing is based on an IIR (Infinite Impulse Response) approximation of
the Gaussian filter (and its derivatives) that can be applied to the real-time processing of digitized
signals. Based on measurements obtained with the photon emissions generated by an $^{241}$Am source, the
energy threshold is estimated to be equal to ~2 keV corresponding to the physical threshold of the NaI
(Tl) detector. An algorithm developed for a Silicon Drift Detector used for low-energy x-ray spectrometry
is also described. In that case, the digital pulse processing is specifically designed for signals provided by
a reset-type preamplifier (${55}$Fe source).
https://hal-cea.archives-ouvertes.fr/cea-01828386
Contributor : Bruno Savelli Connect in order to contact the contributor
Submitted on : Tuesday, July 3, 2018 - 10:46:31 AM
Last modification on : Friday, June 25, 2021 - 10:30:01 AM
Contributor : Bruno Savelli Connect in order to contact the contributor
Submitted on : Tuesday, July 3, 2018 - 10:46:31 AM
Last modification on : Friday, June 25, 2021 - 10:30:01 AM