Trapezoidal pulse shaping for pile-up pulse identification in X-ray spectrometry

Zhou, Jianbin; Liu, Yi; Xu, Hong; Zhou, Jie; Ma, Yan; Wang, Min; Hu, Yunchuan; Bao, Chen; Yue, Aizhong

doi:10.1088/1674-1137/39/6/068201

Cited by 14 publications

(3 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…If the pulses pile up, some algorithm processing can be taken to analyze the pileup pulse [6]. Trapezoidal shaping is a very effective anti-pileup analysis method [7][8][9].…”

Section: Anti-pileup Of Nuclear Pulse Based On Trapezoidal Shapingmentioning

confidence: 99%

Study on gamma spectrum measurement of high-dose-rate radiation

Zhou,

Xu,

Xie

et al. 2024

J. Phys.: Conf. Ser.

View full text Add to dashboard Cite

Currently, spectrometers are almost used for spectrum measuring of low-dose-rate radiation. Therefore, the sensitive volume of the spectrometer detector is usually big, and the width of the nuclear pulse is often wide. The pulse throughput of the spectrometer does not have to be very high. However, if a nuclear accident or a nuclear burst occurs, the dose rate will be high. When we measure the spectrum of the radiation, pulses output from the spectrometer detector will pile up seriously. The current spectrometer cannot meet the needs of high-dose-rate radiation energy spectrum measurement. To solve the problem of spectrum measuring of high-dose-rate radiation, in this paper, a solution of measuring the gamma spectrum of high-dose-rate radiation is put forward, and many measures are taken, such as lessening the detector volume, detector shielding, narrowing down the nuclear pulse width, pulse anti-pileup, and increasing the pulse throughput of the multi-channel analyzer through FPGA parallel processing. Analysis design and experiment show that the gamma spectrum of high-dose-rate radiation can be measured through these measures.

show abstract

“…If the pulses pile up, some algorithm processing can be taken to analyze the pileup pulse [6]. Trapezoidal shaping is a very effective anti-pileup analysis method [7][8][9].…”

Section: Anti-pileup Of Nuclear Pulse Based On Trapezoidal Shapingmentioning

confidence: 99%

Study on gamma spectrum measurement of high-dose-rate radiation

Zhou,

Xu,

Xie

et al. 2024

J. Phys.: Conf. Ser.

View full text Add to dashboard Cite

show abstract

“…This effect will increase the probability of pulse pile-up, rendering this pre-filtering technique unsuitable for noise reduction in applications requiring high count rate and high resolution [11]. Also, the parameters of the trapezoidal filter depend on the rise time and fall time of the detector pulses [12]. So, even when the parameters of the preamplifier pulse output remain invariant, it becomes essential to recalibrate the parameters of the trapezoidal filter due to changes in the shape of the output pulse of SK filter.…”

Section: Introductionmentioning

confidence: 99%

Implementation of FPGA based real-time digital DAQ for high resolution, and high count rate nuclear spectroscopy application

et al. 2023

View full text Add to dashboard Cite

This paper investigates a digital system for real-time nuclear data (pulse) analysis based on a field programmable gate array and a computer-based data acquisition software for high count rate and high-resolution spectroscopy applications. A novel FPGA-based design is proposed with enhanced universality for real-time energy spectroscopy applications encompassing gamma and charged particles in noisy environments. This design implements an adaptive digital pre-filter for noise reduction without distorting the preamplifier pulse shape for improvement in energy resolution. This adaptive approach can be used for a wide range of input pulses with varying rise and fall times without deteriorating the signal-to-noise ratio. The design incorporates a digital trapezoidal filter with a triggerless peak detection algorithm for improvement in energy resolution. A high-speed dual clock first-in-first-out memory is implemented for handling high data rates. The real-time analysis of the FPGA internal signals and nuclear spectroscopy experiments with high count rate have been carried out with random nuclear pulses using an emulator. The results have been compared with conventional VERSA-Module Euro data acquisition system and CR_RC based digital pulse processing approaches.

show abstract

“…To solve these problems, the author's team members have achieved corresponding research results in pulse elimination [25], pulse impairment [26], digital filtering [27][28][29], and pulse shaping [30], to reduce the statistical fluctuation of measurement results. On this basis, this work regards the MCA (multichannel analyzer) and the SLA (seeds local averaging) [31] algorithm as the comparison object, an improved ISLA (improved seeds local averaging) algorithm has been proposed, and the theoretical derivation and application effect evaluation of the algorithm have been carried out, too.…”

Section: Introductionmentioning

confidence: 99%

Application of an Improved Seeds Local Averaging Algorithm in X-ray Spectrum

Tang

Zhang

Shi

et al. 2021

Mathematical Problems in Engineering

View full text Add to dashboard Cite

As an element content analysis technology, X-ray fluorescence spectrometry can be used for quantitative or semiquantitative analysis of the element content in the sample, which is of great significance for mineral census and spent fuel reprocessing. Due to the limitation of the inherent energy resolution of the detector itself, the accuracy of X-ray fluorescence analysis is difficult to be greatly improved. In some applications, even if the semiconductor detector with the best energy resolution is used, the characteristic peaks of different elements cannot be completely separated. Therefore, greatly improving the energy resolution of the detection system is a hot issue in the existing research field. To solve these problems, this paper analyzes the advantages and disadvantages of the traditional MCA (multichannel analyzer) and SLA (seeds local averaging) algorithm and proposes an ISLA (improved seeds local averaging) algorithm based on mathematical statistics. In the section of theoretical derivation, the principle of ISLA algorithm is described, whose theoretical characteristics and spectral results with different parameters are derived and simulated. In the application effect evaluation, the spectrum obtained by each method is analyzed in detail. Simulation and experimental results show that the spectrum obtained by SLA algorithm has a smaller full width at half maximum than that obtained by MCA, but the seed average process in SLA algorithm also reduces its counting rate. The optimized ISLA algorithm can not only effectively reduce the full width at half maximum of the spectral line and sharpen the spectrum peak but also compensate for the loss of the count rate of SLA algorithm.

show abstract

Trapezoidal pulse shaping for pile-up pulse identification in X-ray spectrometry

Cited by 14 publications

References 9 publications

Study on gamma spectrum measurement of high-dose-rate radiation

Study on gamma spectrum measurement of high-dose-rate radiation

Implementation of FPGA based real-time digital DAQ for high resolution, and high count rate nuclear spectroscopy application

Application of an Improved Seeds Local Averaging Algorithm in X-ray Spectrum

Contact Info

Product

Resources

About