Implementation of real-time digital CR–RCm shaping filter on FPGA for gamma-ray spectroscopy
| Autor: | Yinyu Liu, R. Zhou, Shun Li, Lifang Liu, Jinglong Zhang |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Physics
Nuclear and High Energy Physics 010308 nuclear & particles physics business.industry Quantization (signal processing) 01 natural sciences Particle detector 0103 physical sciences Electronic engineering Gamma spectroscopy 010306 general physics Field-programmable gate array Spectroscopy business RC circuit Instrumentation Digital signal processing Voltage |
| Zdroj: | Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 906:1-9 |
| ISSN: | 0168-9002 |
| DOI: | 10.1016/j.nima.2018.05.020 |
| Popis: | A novel implementation of a digital CR – RC m shaping filter for gamma-ray spectroscopy is presented in this paper, derived from the digitalization and quantization of the input and output voltage of CR and RC circuits. Compared with the conventional digital CR – RC m shaper, it has a relatively simple structure consuming fewer multipliers and is easy to realize on DSP chips. More importantly, this digital shaper also overcomes the shortcoming of the conventional digital CR – RC m shaper, which lacks the function of pole-zero cancellation (PZC). Experimental data on noise suppression, immunity to ballistic deficit, and energy resolution improvement show that the digital spectroscopy system based on the described shaper achieves the same excellent performance as the analog spectroscopy system from CANBERRA, which therefore provides a new way to realize the shaping of digital signals from radiation detectors, and this carries great significance for engineering applications. |
| Databáze: | OpenAIRE |
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