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The division was organized to promote the advancement of knowledge of the use of particle accelerator technologies for nuclear and other applications. It focuses on production of neutrons and other particles, utilization of these particles for scientific or industrial purposes, such as the production or destruction of radionuclides significant to energy, medicine, defense or other endeavors, as well as imaging and diagnostics.
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Fusion Science and Technology
NEA issues call to action in report on nuclear cost reductions
A new report from the Paris-based OECD Nuclear Energy Agency declares that nuclear power is needed for countries to meet their Paris Agreement decarbonization and energy security policy goals, but that governmental support for a rapid reduction in the cost of new nuclear capacity through the creation of certain policy frameworks is likely necessary.
Kazuhisa Yuki, Makoto Kawamoto, Munehito Hattori, Koichi Suzuki, Ken-ichi Sunamoto, Akio Sagara
Fusion Science and Technology | Volume 68 | Number 3 | October 2015 | Pages 715-719
Technical Note | Proceedings of TOFE-2014 | dx.doi.org/10.13182/FST15-115
Articles are hosted by Taylor and Francis Online.
In this study, in order to enhance heat transfer performance of helium gas flow for divertor cooling, high thermal conductivity porous media that are copper-particles-sintered ones are introduced as the referential porous media. In order to predict the heat transfer performance of He gas impinging jet flow with the porous medium, nitrogen gas is used as the simulant of helium gas in the pressure range of 0.1 MPa to 0.8 MPa. With the porous medium, the particle introduced is highly size-adjusted one of 1000 μm in diameter and the porosity is almost 30 %. The maximum heat transfer performance is evaluated by numerically simulating temperature field in a heat transfer block based on the measured temperature data. The experiments prove that the heat transfer coefficient of N2 gas impinging jet flow with the porous medium is much higher than that of common impinging jet flow without the porous medium from the view point of not only flow velocity but also pumping power.