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Fusion Energy
This division promotes the development and timely introduction of fusion energy as a sustainable energy source with favorable economic, environmental, and safety attributes. The division cooperates with other organizations on common issues of multidisciplinary fusion science and technology, conducts professional meetings, and disseminates technical information in support of these goals. Members focus on the assessment and resolution of critical developmental issues for practical fusion energy applications.
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Latest News
Norway’s Halden reactor takes first step toward decommissioning
The government of Norway has granted the transfer of the Halden research reactor from the Institute for Energy Technology (IFE) to the state agency Norwegian Nuclear Decommissioning (NND). The 25-MWt Halden boiling water reactor operated from 1958 to 2018 and was used in the research of nuclear fuel, reactor internals, plant procedures and monitoring, and human factors.
Masanori Araki, Satoshi Suzuki, Kazuyoshi Sato, Masato Akiba
Fusion Science and Technology | Volume 30 | Number 3 | December 1996 | Pages 674-679
Divertor Design and Experiments | doi.org/10.13182/FST96-A11963014
Articles are hosted by Taylor and Francis Online.
It is a key issue to design robust divertor modules for the International Thermonuclear Experimental Reactor (ITER). The divertor module, which consists of a cassette body with high heat flux components, has to be designed to handle not only severe particle fluxes and thermal loads from the main plasmas, but also various electromagnetic forces during the operations. In particular, the electromagnetic force induced by eddy currents during plasma disruptions is the most severe condition from engineering design point of view. Based on the ITER disruption scenarios, dynamic electromagnetic forces of the divertor module induced by the eddy currents have been analyzed. To simplify modeling, the actively cooled structure made of copper alloys was considered because of its much lower electrical resistivity compared to the other materials. In the analyses, parametric studies related to electrical connections, divertor cassette configurations and disruption scenarios, have been considered. Based on the electromagnetic force analyses, elastic stress analysis has also been performed. In particular at the vertical displacement event, analytical results show that the maximum force over 5 MN/m2 which corresponds to the elastic stress of as high as several hundreds MPa is expected in the divertor high heat flux components and that some design modifications for the mitigation of the electromagnetic force will be necessary.
