Transmutation of uranium and thorium in the particle field of the Quinta sub-critical assembly
| Autor: | V. Chilap, Vladimir Voronko, I.V. Zhuk, S.R. Hashemi-Nezhad, A.A. Zhadan, J. Khushvaktov, M. Paraipan, A. A. Solnyshkin, W.I. Furman, A.S. Potapenko, Vladimir Sotnikov, Krystsina Husak, Sergey I. Tyutyunnikov, N.L. Asquith, J. Adam, A. I. Berlev, I. V. Kudashkin, M. Kadykov, A.A. Baldin, I. Mar’in, V. Pronskih |
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| Rok vydání: | 2018 |
| Předmět: |
Physics
Nuclear and High Energy Physics Nuclotron Nuclear transmutation 010308 nuclear & particles physics Fission Nuclear engineering chemistry.chemical_element Uranium Natural uranium 01 natural sciences Thorium fuel cycle chemistry 0103 physical sciences Neutron Nuclear Experiment 010306 general physics Instrumentation Neutron moderator |
| Zdroj: | Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 883:96-114 |
| ISSN: | 0168-9002 |
| Popis: | The fission rates of natural uranium and thorium were measured in the particle field of Quinta, a 512 kg natural uranium target–blanket sub-critical assembly. The Quinta assembly was irradiated with deuterons of energy 4 GeV from the Nuclotron accelerator of the Joint Institute for Nuclear Research (JINR), Dubna, Russia. Fission rates of uranium and thorium were measured using Gamma spectroscopy and fission track techniques. The production rate of 239 Np was also measured. The obtained experimental results were compared with Monte Carlo predictions using the MCNPX 2.7 code employing the physics and fission–evaporation models of INCL4–ABLA, CEM03.03 and LAQGSM03.03. Some of the neutronic characteristics of the Quinta are compared with the “Energy plus Transmutation (EpT)” subcritical assembly, which is composed of a lead target and nat U blanket. This comparison clearly demonstrates the importance of target material, neutron moderator and reflector types on the performance of a spallation neutron driven subcritical system. As the dimensions of the Quinta are very close to those of an optimal multi-rod-uranium target, the experimental and Monte Carlo calculation results presented in this paper provide insights on the particle field within a uranium target as well as in Accelerator Driven Systems in general. |
| Databáze: | OpenAIRE |
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