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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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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.
M. Ichimura et al. (20R03)
Fusion Science and Technology | Volume 51 | Number 2 | February 2007 | Pages 150-153
Technical Paper | Open Magnetic Systems for Plasma Confinement | doi.org/10.13182/FST07-A1337
Articles are hosted by Taylor and Francis Online.
In magnetically confined plasmas, fluctuations in the ion cyclotron range of frequency (ICRF) will be driven by the presence of non-thermal ion energy distributions. In a typical discharge in the GAMMA 10 tandem mirror, Alfvén-ion-cyclotron (AIC) modes are spontaneously excited due to strong temperature anisotropy. On the other hand, in fusion-oriented devices with a toroidal configuration, neutral beam (NB) injection is commonly used to create high performance plasmas. The resultant high-energy ions are trapped in local mirrors and will form velocity distributions with strong anisotropy. Especially in burning plasma experiments on JET and TFTR, fusion-product (FP) ions form non-thermal ion energy distributions in the bulk plasma and ion cyclotron emission (ICE) has been observed. The main purpose of this work is to study the relation between AIC-modes and ICEs in magnetically confined plasmas with non-thermal energy distributions. Recently, fluctuation measurements made by using ICRF antennas as pickup loops on JT-60U have been started. When the deuterium-NBs are injected into deuterium bulk plasma, magnetic fluctuations due to injected beams and FP ions are detected. Wave excitation near the ion cyclotron frequency and its higher harmonics is studied experimentally in plasmas with non-thermal ion energy distributions.
