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Title: Modeling filters for formation of mono-energetic neutron beams in the research reactor IRT MEPhI and optimization of radiation shielding for liquid-xenon detector

Abstract

The paper considers formation of mono-energetic neutron beams at the entrance of experimental channels in research reactors for various applications. The problem includes the following steps: 1. Full-scale mathematical model of the research IRT MEPhI was developed for numerical evaluations of neutron spectra and neutron spatial distribution in the area of experimental channels. 2. Modeling of filters in the channel to shift neutron spectrum towards the required mono-energetic line was performed. 3. Some characteristics of neutron beams at the entrance of detector were evaluated. The filter materials were selected. The calculations were carried out with application of the computer code based on the high-precision Monte-Carlo code MCNP. As a result, mathematical model was created for the filter which is able to form mono-energetic (24 keV) neutron beam. The study was carried out within the frames of the research project on development of Russian emission detector with liquid noble gas to observe rare processes of neutrino scattering and particles of hypothetical dark matter in atomic nuclei. (authors)

Authors:
; ; ; ; ;  [1]
  1. Laboratory of Experimental Nuclear Physics, National Research Nuclear Univ. MEPhI, Kashirskoe sh., 31, Moscow, 115409 (Russian Federation)
Publication Date:
Research Org.:
American Nuclear Society, Inc., 555 N. Kensington Avenue, La Grange Park, Illinois 60526 (United States)
OSTI Identifier:
22105751
Resource Type:
Conference
Resource Relation:
Conference: PHYSOR 2012: Conference on Advances in Reactor Physics - Linking Research, Industry, and Education, Knoxville, TN (United States), 15-20 Apr 2012; Other Information: Country of input: France; 7 refs.
Country of Publication:
United States
Language:
English
Subject:
21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS; BIOLOGICAL SHIELDING; COMPUTER CODES; EXPERIMENTAL CHANNELS; FILTERS; KEV RANGE 10-100; LIQUIDS; MATHEMATICAL MODELS; MONTE CARLO METHOD; NEUTRINOS; NEUTRON BEAMS; NEUTRON SPECTRA; NEUTRONS; NONLUMINOUS MATTER; OPTIMIZATION; RESEARCH REACTORS; SIMULATION; SPATIAL DISTRIBUTION; XENON

Citation Formats

Ivakhin, S. V., Tikhomirov, G. V., Bolozdynya, A. I., Efremenko, Y. V., Akimov, D. Y., and Stekhanov, V. N. Modeling filters for formation of mono-energetic neutron beams in the research reactor IRT MEPhI and optimization of radiation shielding for liquid-xenon detector. United States: N. p., 2012. Web.
Ivakhin, S. V., Tikhomirov, G. V., Bolozdynya, A. I., Efremenko, Y. V., Akimov, D. Y., & Stekhanov, V. N. Modeling filters for formation of mono-energetic neutron beams in the research reactor IRT MEPhI and optimization of radiation shielding for liquid-xenon detector. United States.
Ivakhin, S. V., Tikhomirov, G. V., Bolozdynya, A. I., Efremenko, Y. V., Akimov, D. Y., and Stekhanov, V. N. Sun . "Modeling filters for formation of mono-energetic neutron beams in the research reactor IRT MEPhI and optimization of radiation shielding for liquid-xenon detector". United States.
@article{osti_22105751,
title = {Modeling filters for formation of mono-energetic neutron beams in the research reactor IRT MEPhI and optimization of radiation shielding for liquid-xenon detector},
author = {Ivakhin, S. V. and Tikhomirov, G. V. and Bolozdynya, A. I. and Efremenko, Y. V. and Akimov, D. Y. and Stekhanov, V. N.},
abstractNote = {The paper considers formation of mono-energetic neutron beams at the entrance of experimental channels in research reactors for various applications. The problem includes the following steps: 1. Full-scale mathematical model of the research IRT MEPhI was developed for numerical evaluations of neutron spectra and neutron spatial distribution in the area of experimental channels. 2. Modeling of filters in the channel to shift neutron spectrum towards the required mono-energetic line was performed. 3. Some characteristics of neutron beams at the entrance of detector were evaluated. The filter materials were selected. The calculations were carried out with application of the computer code based on the high-precision Monte-Carlo code MCNP. As a result, mathematical model was created for the filter which is able to form mono-energetic (24 keV) neutron beam. The study was carried out within the frames of the research project on development of Russian emission detector with liquid noble gas to observe rare processes of neutrino scattering and particles of hypothetical dark matter in atomic nuclei. (authors)},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2012},
month = {7}
}

Conference:
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