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Neutron streaming along ducts and labyrinths at the JET biological shielding: Effect of concrete composition
NCSR Demokritos, Inst Nucl & Radiol Sci, Technol Energy & Safety, Athens, Greece..
NCSR Demokritos, Inst Nucl & Radiol Sci, Technol Energy & Safety, Athens, Greece..
ENEA, Fus Tech Unit, Rome, Italy..
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Applied Nuclear Physics.
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2015 (English)In: Radiation Physics and Chemistry, ISSN 0969-806X, E-ISSN 1879-0895, Vol. 116, 359-364 p.Article in journal (Refereed) Published
Abstract [en]

Experiments and Monte Carlo simulations were performed at the Joint European Torus (JET) in order to validate the computational tools and methods applied for neutron streaming calculations through penetrations in the JET Hall biological shielding. In the present work the sensitivity of the simulations on the hydrogen and boron content in concrete shielding was investigated. MCNP code was used to simulate neutron streaming along the JET Hall personnel entrance labyrinth for deuterium-deuterium and deuterium-tritium plasma sources for different concrete wall compositions. Neutron fluence and ambient dose equivalent along the labyrinth were calculated. Simulation results for the "as built" JET concrete composition were compared against measurements performed using thermoluminescence detectors. This study contributes to the optimization of the radiation shielding of JET and, furthermore, provides information from JET experience that may assist in optimizing and validating the radiation shielding design methodology used in its successor fusion devices ITER and DEMO.

Place, publisher, year, edition, pages
2015. Vol. 116, 359-364 p.
Keyword [en]
Radiation shielding, Neutron streaming, Radiation protection, Fusion
National Category
Physical Sciences
URN: urn:nbn:se:uu:diva-265807DOI: 10.1016/j.radphyschem.2015.04.015ISI: 000362606200073OAI: oai:DiVA.org:uu-265807DiVA: diva2:866707
EU, European Research Council, 633053
Available from: 2015-11-03 Created: 2015-11-03 Last updated: 2015-11-03Bibliographically approved

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Conroy, Sean
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