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Division Spotlight
Operations & Power
Members focus on the dissemination of knowledge and information in the area of power reactors with particular application to the production of electric power and process heat. The division sponsors meetings on the coverage of applied nuclear science and engineering as related to power plants, non-power reactors, and other nuclear facilities. It encourages and assists with the dissemination of knowledge pertinent to the safe and efficient operation of nuclear facilities through professional staff development, information exchange, and supporting the generation of viable solutions to current issues.
Meeting Spotlight
International Conference on Mathematics and Computational Methods Applied to Nuclear Science and Engineering (M&C 2025)
April 27–30, 2025
Denver, CO|The Westin Denver Downtown
Standards Program
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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Nuclear Technology
Fusion Science and Technology
May 2025
Latest News
ANS designates Armour Research Foundation Reactor as Nuclear Historic Landmark
The American Nuclear Society presented the Illinois Institute of Technology with a plaque last week to officially designate the Armour Research Foundation Reactor a Nuclear Historic Landmark, following the Society’s decision to confer the status onto the reactor in September 2024.
Y. Yasaka, A. Maruyama, N. Takano
Fusion Science and Technology | Volume 43 | Number 1 | January 2003 | Pages 44-50
Overview | doi.org/10.13182/FST03-A11963561
Articles are hosted by Taylor and Francis Online.
MHD stability and ion cyclotron heating are investigated in the axisymmetric tandem mirror HIEI, which is a three-cell device with a typical magnetic field strength of 0.05-0.3-0.1-0.3 T, from central cell midplane to outer throat of plug cells. A magnetic divertor configuration introduced in the central cell provides magnetic nulls and stabilizes MHD activities by shorting-out the charge separation in the azimuthal direction. The density fluctuation of m = 1 flute mode is observed to decrease significantly by using the divertor. The stabilization effect of the divertor is stronger as the nulls are located at inner radius. It is observed from the cross correlation measurement that the electrons exhibit E × B motion in unstable plasmas, while they tend to follow the Boltzmann relation in the divertor-stabilized plasmas. The second harmonic ion cyclotron heating is also investigated. In the divertor configuration where the magnetic field strength varies significantly in radial direction, the ICRF waves have a large transverse gradient in amplitudes to enhance the finite Larmor radius effect. The wave propagation and damping are investigated theoretically and experimentally.