A detailed study of the high energy neutron flux (15-20 MeV) at NCSR “Demokritos” using a BC501A liquid scintillator

PDF (English)
Δημοσιευμένα: Απρ 17, 2020
DOI: https://doi.org/10.12681/hnps.2996
Eleni Mitsi
Department of Physics, National Technical University of Athens
Sotiris Chasapoglou
Department of Physics, National Technical University of Athens
Antigoni Kalamara
Department of Physics , National Technical University of Athens
Michael Kokkoris
Department of Physics, National Technical University of Athens
Veatriki Michalopoulou
Department of Physics, National Technical University of Athens
Athanasios Stamatopoulos
Department of Physics, National Technical University of Athens
Roza Vlastou
Department of Physics, National Technical University of Athens
Anastasios Lagoyannis
Institute of Nuclear and Particle Physics, National Center for Scientific Research "Demikritos"
Michael Axiotis
Institute of Nuclear and Particle Physics, National Center for Scientific Research "Demikritos"
Nikolas Patronis
Department of Physics, University of Ioannina
Zena Eleme
Department of Physics, University of Ioannina
Περίληψη
The current study was carried out for neutron beam energies ranging between 14.8 and 19.2 MeV using the 3H(d,n)4He reaction and included neutron/gamma discrimination and neutron monitoring utilizing a BC501A liquid scintillator, followed by a pulse shape discrimination-capable circuit. Tests were conducted in order to determine the characteristics and limitations of the employed experimental setup. The deconvolution of the acquired spectra was performed using the DIFBAS computer code. The algorithm is based on the Bayesian conditional probability,whilethe covariance filter method was employed to calculate the a posteriori neutron flux spectrum along with its covariance matrix.The produced neutron beam proved to be practically monoenergetic for low energy deuterons, while at higher deuteron beam energies, the strong presence of parasitic and scattered neutrons was revealed.
Λεπτομέρειες άρθρου
  • Ενότητα
  • Poster contributions
Αναφορές
M. Tichy, Nucl. Instr. And Meth. A267 (1988)
H. Klein et al., Nucl. Instr. And Meth. 476 (2002)
N. Patronis et al., Nucl. Instr. And Meth.578 (2007)
M. Moszynski et al., Nucl. Instr. And Meth. 350 (1994)
R. A. Winyard et al., Nucl. Instr. And Meth. 95 (1975)
F. D. Brooks, Nucl. Instr. And Meth. 162 (1979)
S. D. Jastaniah et al. Nucl. Instr. And Meth. 517 (2004)
Xie Xufei et al., Plasma Scien. And Techn. 14 (2012)
DIFBAS manual (IAEA)
R. Vlastou et al., Physics Procedia 66 (2015)