Neutron streaming along ducts and labyrinths at the JET biological shielding: Effect of concrete composition

T. Vasilopoulou, I.E. Stamatelatos, P. Batistoni, S. Conroy, B. Obryk, S. Popovichev, D.B. Syme

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Abstract

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.
Original languageEnglish
Pages (from-to)359 - 364
Number of pages6
JournalRadiation Physics and Chemistry
Volume116
DOIs
Publication statusPublished - 1 Nov 2015
Externally publishedYes

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All Science Journal Classification (ASJC) codes

  • Radiation

Cite this

Vasilopoulou, T., Stamatelatos, I. E., Batistoni, P., Conroy, S., Obryk, B., Popovichev, S., & Syme, D. B. (2015). Neutron streaming along ducts and labyrinths at the JET biological shielding: Effect of concrete composition. Radiation Physics and Chemistry, 116, 359 - 364. https://doi.org/10.1016/j.radphyschem.2015.04.015