Neutron spectroscopy with fast waveform digitizer

Корнилов, Н. В.; Khriatchkov, V. A.; Dunaev, M. V.; Kagalenko, A. B.; Semenova, N. N.; Demenkov, V.G.; Plompen, Ajm

doi:10.1016/s0168-9002(02)01790-4

Cited by 59 publications

(30 citation statements)

References 3 publications

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“…With fast sampling ADC's becoming better and available at smaller costs, new advanced algorithms for NGD have been developed and used with very good results. A correlations approach [20], a curve fitting method [21] and a pulse gradient method [22,23] have for example all yielded good results regarding the discrimination of neutrons and γ rays.…”

Section: Liquid Scintillators and Pulse-shape Discriminationmentioning

confidence: 99%

Digital pulse-shape discrimination of fast neutrons and rays

Söderström

Nyberg

Wolters

2008

Nuclear Instruments and Methods in Physics Research Section A:

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Discrimination of the detection of fast neutrons and γ rays in a liquid scintillator detector has been investigated using digital pulse-processing techniques. An experimental setup with a 252 Cf source, a BC-501 liquid scintillator detector, and a BaF 2 detector was used to collect waveforms with a 100 Ms/s, 14 bit sampling ADC. Three identical ADC's were combined to increase the sampling frequency to 300 Ms/s. Four different digital pulse-shape analysis algorithms were developed and compared to each other and to data obtained with an analogue neutron-γ discrimination unit. Two of the digital algorithms were based on the charge comparison method, while the analogue unit and the other two digital algorithms were based on the zero-crossover method. Two different figure-of-merit parameters, which quantify the neutron-γ discrimination properties, were evaluated for all four digital algorithms and for the analogue data set. All of the digital algorithms gave similar or better figure-of-merit values than what was obtained with the analogue setup. A detailed study of the discrimination properties as a function of sampling frequency and bit resolution of the ADC was performed. It was shown that a sampling ADC with a bit resolution of 12 bits and a sampling frequency of 100 Ms/s is adequate for achieving an optimal neutron-γ discrimination for pulses having a dynamic range for deposited neutron energies of 0.3-12 MeV. An investigation of the influence of the sampling frequency on the time resolution was made. A FWHM of 1.7 ns was obtained at 100 Ms/s.

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Section: Liquid Scintillators and Pulse-shape Discriminationmentioning

confidence: 99%

Digital pulse-shape discrimination of fast neutrons and rays

Söderström

Nyberg

Wolters

2008

Nuclear Instruments and Methods in Physics Research Section A:

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“…Digital signals have allowed to study other discrimination methods. The following pulse shape analysis methods have been tested: charge comparison, charge rise-time [5], correlation function using an average neutron signal [6], fit using the true signal shape [7], Gatti & De Martini method [8]. The method of Gatti & De Martini gives the best separation between neutrons and γ-rays, nevertheless a good discrimination is obtained by means of the charge comparison, which is the second best method.…”

Section: Digital Pulse Shape N-γ Discriminationmentioning

confidence: 99%

A New Neutron Time-of-Flight Array for β-Decay Studies

Sénoville¹,

Delaunay²,

Achouri³

et al. 2015

Proceedings of the Conference on Advances in Radioactive Isotope Science (ARIS2014)

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A new time-of-flight array for β-delayed neutron spectroscopy (E n < 5 MeV) is being developed with the aim of improved performance compared to existing arrays. We report on the status of this development, in particular the study of the n-γ discrimination quality with digital electronics, a comparison of several organic scintillators, including new discriminating plastics, as well as the characterisation of detectors with monoenergetic neutrons to measure intrinsic efficiencies and cross-talk probabilities.

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“…According to a commonly accepted mechanism [15,16], the slow component Major developments in understanding these properties have been made with transstilbene single crystals, an efficient PSD material used for decades as a standard for comparison with other solid and liquid organic scintillators. Recent availability of high-speed waveform digitizers greatly simplified processing of gamma-neutron signals [17][18][19], enabling us to conduct much broader studies of many new materials, among which 3-PB was one of the first crystals [20] with the PSD properties that could be potentially used in neutron detection.…”

Section: Neutron Detection Propertiesmentioning

confidence: 99%

Application of solution techniques for rapid growth of organic crystals

Zaitseva¹,

Carman²,

Glenn³

et al. 2011

Journal of Crystal Growth

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Single crystals of a pure hydrocarbon, 1,3,5-triphenylbenzene, with properties suitable for high-energy neutron detection were grown from toluene solutions using slow evaporation and temperature reduction methods with growth rates up to 10 mm/day. Application of the rapid growth technique developed earlier for growth of large water-soluble crystals shows that crystals of aromatic compounds can be successfully grown from solutions in large volumes required for their application as scintillator materials for radiation detection.

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Neutron spectroscopy with fast waveform digitizer

Cited by 59 publications

References 3 publications

Digital pulse-shape discrimination of fast neutrons and rays

Digital pulse-shape discrimination of fast neutrons and rays

A New Neutron Time-of-Flight Array for β-Decay Studies

Application of solution techniques for rapid growth of organic crystals

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