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Digital Pulse Shape Discrimination Method for D–D Neutron Spectrometry Using the LaCl3(Ce) Scintillator

  • NEUTRON PHYSICS
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Abstract

The problem of neutron spectroscopy of plasma is substantial in modern magnetic confinement fusion experiments. Most machines operate with deuterium plasma emitting neutrons with energies of ~2.5 MeV. This paper demonstrates the possibility of a digital method for separating signals according to the pulse shape discrimination (PSD) of a scintillation detector based on a LaCl3(Ce) crystal when detecting neutrons and γ-quanta. The analysis of the shape of pulses produced by α particles, neutrons and γ-quanta is carried out. The optimal PSD parameters of a signal separation, namely the figure-of-merit parameters (1.1 for n–γ and 2.1 for α–γ), have been determined. The results demonstrate the promise of using the LaCl3(Ce) scintillation spectrometer with digital PSD as a D–D neutron spectrometer in modern controlled thermonuclear fusion facilities.

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Funding

This work was supported by the Russian Foundation for Basic Research, project no. 20-32-90035.

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Authors and Affiliations

  1. Moscow Institute of Physics and Technology (National Research University), Moscow, Russia

    A. V. Pankratenko, T. M. Kormilitsyn & Yu. A. Kashchuk

  2. Project Center ITER, Private Institution of the Rosatom State Nuclear Energy Corporation, Moscow, Russia

    A. V. Pankratenko, T. M. Kormilitsyn, S. Yu. Obudovsky, A. S. Dzhurik & Yu. A. Kashchuk

Authors
  1. A. V. Pankratenko
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  2. T. M. Kormilitsyn
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  3. S. Yu. Obudovsky
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  4. A. S. Dzhurik
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  5. Yu. A. Kashchuk
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Correspondence to A. V. Pankratenko.

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Translated by G. Dedkov

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Pankratenko, A.V., Kormilitsyn, T.M., Obudovsky, S.Y. et al. Digital Pulse Shape Discrimination Method for D–D Neutron Spectrometry Using the LaCl3(Ce) Scintillator. Phys. Part. Nuclei Lett. 19, 66–76 (2022). https://doi.org/10.1134/S1547477122010095

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  • DOI: https://doi.org/10.1134/S1547477122010095

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