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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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ANS Student Conference 2025
April 3–5, 2025
Albuquerque, NM|The University of New Mexico
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The Standards Committee is responsible for the development and maintenance of voluntary consensus standards that address the design, analysis, and operation of components, systems, and facilities related to the application of nuclear science and technology. Find out What’s New, check out the Standards Store, or Get Involved today!
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Fusion Science and Technology
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.
S. Kitajima, H. Takahashi, Y. Tanaka, H. Utoh, M. Takenaga, M. Yokoyama, S. Inagaki, Y. Suzuki, K. Nishimura, H. Ogawa, J. Shinde, M. Ogawa, H. Aoyama, K. Iwazaki, A. Okamoto, K. Shinto, M. Sasao
Fusion Science and Technology | Volume 50 | Number 2 | August 2006 | Pages 201-206
Technical Paper | Stellarators | doi.org/10.13182/FST06-A1236
Articles are hosted by Taylor and Francis Online.
The influence of the low-order rational surface (n,m) = (5,3) on ion viscosity and radial electric field formation were investigated by electrode current sweep biasing with a hot cathode at the Tohoku University Heliac. In the improved mode, the position of the maximum electric field remained on the n/m = 5/3 rational surface. After the H-L transition, the local maxima shifted outward to the plasma periphery of ~ 0.8. The low-order magnetic islands were formed resonating the magnetic Fourier components of (n,m) = (5,3) by external perturbation coils. As the widths of the magnetic islands were increased, the biasing electrode current required for the improved mode transition increased. It was suggested that the ion viscosity increased according to the increase in magnetic island width. The increase in the biasing electrode current is equivalent to the increase in the driving force for the poloidal rotation. This suggests the possibility of an active viscosity control assisted by externally controlled island width and magnetic island rotation.