Implementation of a real-time adaptive digital shaping for nuclear spectroscopy

Regadío, Alberto; Prieto, Sebastián Sánchez; Prieto, Manuel; Tabero, Jesús

doi:10.1016/j.nima.2013.09.063

Cited by 34 publications

(5 citation statements)

References 8 publications

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“…To achieve on-line signal processing, it has been increasingly popular to implement digital algorithm on FPGA in nuclear instrumentation [11,[17][18][19]. While FPGA is powerful for the digital circuit design, it is intractable to communicate with the FPGA subsystem and control its behavior, especially when everything implemented within FPGA tends to be updated easily, including the structure of block design, digital algorithms, type of data to be collected, etc.…”

Section: Jinst 18 P04036mentioning

confidence: 99%

A fully digital coincidence Doppler broadening spectrometer based on FPGA

et al. 2023

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In this article, we implemented a fully digital Coincidence Doppler Broadening (CDB) spectrometer consisting of two HPGe detectors, a fully digital processing and acquisition board, and a dedicated software system. The Field Programmable Gate Array (FPGA) on the board extracts energy and time stamp of digitized pulses from HPGe detectors, and communicates with the dedicated software by which the single channel spectrums and 2D coincidence spectrum were produced. We designed an instruction set dedicated to the CDB Spectrometer and the controller module in FPGA so that the FPGA subsystem is fully controllable and configurable. The trapezoidal pulse shaping algorithm was implemented in FPGA whose arguments are all configurable through the dedicated software by the instruction set. We examined the long-term stability of the spectrometer by 511 keV peak position of both channels. The 2D Gaussian fitting is performed on coincidence spectrum by the software to correct the peak drift of both channels. The results show that this method effectively improves the Doppler-broadened spectrum, by which the peak-to-background ratio increases from 7.0 × 105 to 1.9 × 106.

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Section: Jinst 18 P04036mentioning

confidence: 99%

A fully digital coincidence Doppler broadening spectrometer based on FPGA

et al. 2023

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“…Обобщенная структура калибровочно-контрольной системы СИМС (СЭ) показана на рис. Примером цифровой адаптивной цифровой фильтрации, восстанавливающей базовую линию и уменьшающей эффект наложения сигналов, может служить шейпер, описанный в [6]. Общий вид передаточной характеристики нерекурсивного фильтра H n (z) с коэффициентами передаточной функции b l равен:…”

Section: аппаратная цифровая обработка сигналов кремниевых детекторов...unclassified

Перспективные Цифровые Решения Для Считывающей Электроники Кремниевых Детекторов

Воронин¹

2021

Electronics: STB Russia

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Развитие считывающей электроники для кремниевых детекторов связано с применением субмикронных технологий, которые обеспечивают уменьшение размеров вентилей, снижение потребляемой мощности, повышение быстродействия и улучшение других характеристик. В статье рассмотрены примеры перспективных решений для цифровых устройств считывающей электроники кремниевых детекторов.

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“…The determination of the decay time constant 𝜏 is of great importance. An adaptive algorithm [20] is widely used to determine 𝜏, and its determination in FPGA is complex and beyond the scope of this paper. Thus, to simplify the determination of 𝜏 an easier method was adopted herein, as described below.…”

Section: Determination Of 𝜏mentioning

confidence: 99%

Characteristics and comparison of two digital quasi-Gauss filters for gamma spectroscopy

Zhao¹,

Wang²,

Zhao³

et al. 2021

J. Inst.

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This paper presents two digital quasi-Gauss filters, the first of which is a digital CR-RC m filter with the function of pole-zero cancellation (digital CR PZC -RC m filter) and the second a digital Sallen-Key filter (digital S-K filter). The digital filters are established according to the differential equations of an analog CR PZC -RC m circuit and an analog S-K circuit, respectively. Characteristics including frequency response, noise suppression and stability for both digital filters are discussed and improved algorithm cascade structures are obtained to reduce the resources consumption of field programmable gate arrays (FPGAs). To compare the two digital filters, the energy resolution (@Cs-137, 662 keV) for LaBr 3 (Ce) and NaI(Tl) detectors is calculated for the digital spectroscopy system and the analog spectroscopy system from CANBERRA. The results prove that the two digital filters exhibit similar performance in frequency response, noise suppression and energy resolution improvement. Further, the optimum energy resolution (@Cs-137, 662 keV) for both digital filters is slightly superior to that of CANBERRA. The digital S-K filter consumes fewer FPGA resources compared to the digital CR PZC -RC m filter due to its simpler algorithm cascade structure, though the digital S-K filter becomes unstable when its gain (𝐾) exceeds a certain threshold.

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Implementation of a real-time adaptive digital shaping for nuclear spectroscopy

Cited by 34 publications

References 8 publications

A fully digital coincidence Doppler broadening spectrometer based on FPGA

A fully digital coincidence Doppler broadening spectrometer based on FPGA

Перспективные Цифровые Решения Для Считывающей Электроники Кремниевых Детекторов

Characteristics and comparison of two digital quasi-Gauss filters for gamma spectroscopy

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