Validation of Monte Carlo simulation of neutron production in a spallation experiment

0443884 - ÚJF 2016 RIV GB eng J - Journal Article
Zavorka, L. - Adam, Jindřich - Artiushenko, M. - Baldin, A. A. - Brudanin, V. B. - Katovsky, K. - Suchopár, M. - Svoboda, Ondřej - Vrzalová, Jitka - Wagner, Vladimír … Total 27 authors
Validation of Monte Carlo simulation of neutron production in a spallation experiment.
Annals of Nuclear Energy. Roč. 80, JUN (2015), s. 178-187. ISSN 0306-4549
R&D Projects: GA MŠMT LA08002; GA MŠMT LG14004
Institutional support: RVO:61389005
Keywords : accelerator-driven systems * uranium spallation target * neutron emission * activation measurement * Monte Carlo simulation
Subject RIV: BG - Nuclear, Atomic and Molecular Physics, Colliders
Impact factor: 1.174, year: 2015

A renewed interest in experimental research on Accelerator-Driven Systems has been initiated by the global attempt to produce energy from thorium as a safer, cleaner and more proliferation-resistant alternative to the uranium-fuelled thermal nuclear reactors. The ADS research has been actively pursued at the Joint Institute for Nuclear Research (JINR), Dubna, since decades. Most recently, the emission of fast neutrons was experimentally investigated at the massive (m = 512 kg) natural uranium spallation target QUINTA. The target has been irradiated with the relativistic deuteron beams of energy from 0.5 AGeV up to 4 AGeV at the JINR Nuclotron accelerator in numerous experiments since 2011. Neutron production inside the target was studied through the gamma-ray spectrometry measurement of natural uranium activation detectors. Experimental reaction rates for (n,gamma), (n,f) and (n,2n) reactions in uranium have provided valuable information about the neutron distribution over a wide range of energies up to some GeV. The experimental data were compared to the predictions of Monte Carlo simulations using the MCNPX 2.7.0 code. The results are presented and potential sources of partial disagreement are discussed later in this work.
Permanent Link: http://hdl.handle.net/11104/0246544