Development of FPGA-based digital signal processing system for radiation spectroscopy

We have developed an FPGA-based digital signal processing system that performs both online digital signal filtering and pulse-shape analysis for both particle and gamma-ray spectroscopy. Such functionalities were made possible by a state-of-the-art programmable logic device and system architectures...

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Bibliographic Details
Published in:Radiation measurements 2013-01, Vol.48, p.12-17
Main Authors: Lee, Pil Soo, Lee, Chun Sik, Lee, Ju Hahn
Format: Article
Language:English
Subjects:
Digital signal processing
Earth sciences
Earth, ocean, space
Exact sciences and technology
FPGA
Geochronology
Isotope geochemistry. Geochronology
Particle identification
Pulse-shape analysis
Trapezoidal filter
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Summary:We have developed an FPGA-based digital signal processing system that performs both online digital signal filtering and pulse-shape analysis for both particle and gamma-ray spectroscopy. Such functionalities were made possible by a state-of-the-art programmable logic device and system architectures employed. The system performance as measured, for example, in the system dead time and accuracy for pulse-height and rise-time determination, was evaluated with standard alpha- and gamma-ray sources using a CsI(Tl) scintillation detector. It is resulted that the present system has shown its potential application to various radiation-related fields such as particle identification, radiography, and radiation imaging. ► An FPGA-based digital processing system was developed for radiation spectroscopy. ► Our digital system has a 14-bit resolution and a 100-MHz sampling rate. ► The FPGA implements the online digital filtering and pulse-shape analysis. ► The pileup rejection is implemented in trigger logic before digital filtering process. ► Our digital system was verified in alpha-gamma measurements using a CsI detector.
ISSN:1350-4487
1879-0925
DOI:10.1016/j.radmeas.2012.11.018