MCNPX simulations of the silicon carbide semiconductor detector response to fast neutrons from D-T nuclear reaction

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21670%2F16%3A00310939" target="_blank" >RIV/68407700:21670/16:00310939 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1142/S201019451660226X" target="_blank" >http://dx.doi.org/10.1142/S201019451660226X</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1142/S201019451660226X" target="_blank" >10.1142/S201019451660226X</a>

Result language

angličtina

Original language name

MCNPX simulations of the silicon carbide semiconductor detector response to fast neutrons from D-T nuclear reaction

Original language description

Silicon Carbide (SiC) has been long recognized as a suitable semiconductor material for use in nuclear radiation detectors of high-energy charged particles, gamma rays, X-rays and neutrons. The nuclear interactions occurring in the semiconductor are complex and can be quantified using a Monte Carlo-based computer code. In this work, the MCNPX (Monte Carlo N-Particle eXtended) code was employed to support detector design and analysis. MCNPX is widely used to simulate interaction of radiation with matter and supports the transport of 34 particle types including heavy ions in broad energy ranges. The code also supports complex 3D geometries and both nuclear data tables and physics models. In our model, monoenergetic neutrons from D-T nuclear reaction were assumed as a source of fast neutrons. Their energy varied between 16 and 18.2 MeV, according to the accelerating voltage of the deuterons participating in D-T reaction. First, the simulations were used to calculate the optimum thickness of the reactive film composed of High Density PolyEthylene (HDPE), which converts neutral particles to charged particles and thusly enhancing detection efficiency. The dependency of the optimal thickness of the HDPE layer on the energy of the incident neutrons has been shown for the inspected energy range. Further, from the energy deposited by secondary charged particles and recoiled ions, the detector response was modeled and the effect of the conversion layer on detector response was demonstrated. The results from the simulations were compared with experimental data obtained for a detector covered by a 600 and 1300. mu m thick conversion layer. Some limitations of the simulations using MCNPX code are also discussed.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

BF - Elementary particle theory and high energy physics

OECD FORD branch

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Project

<a href="/en/project/LM2011030" target="_blank" >LM2011030: Van de Graaff - accelerator of ions HV2500 as tuneable neutron source in frame of Czech and European Large Infrastructure</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2016

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection

International Journal of Modern Physics: Conference Series

ISBN

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ISSN

2010-1945

e-ISSN

—

Number of pages

9

Pages from-to

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Publisher name

World Scientific

Place of publication

London

Event location

Crete

Event date

Jun 14, 2015

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

000385793900020