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Division Spotlight
Nuclear Nonproliferation Policy
The mission of the Nuclear Nonproliferation Policy Division (NNPD) is to promote the peaceful use of nuclear technology while simultaneously preventing the diversion and misuse of nuclear material and technology through appropriate safeguards and security, and promotion of nuclear nonproliferation policies. To achieve this mission, the objectives of the NNPD are to: Promote policy that discourages the proliferation of nuclear technology and material to inappropriate entities. Provide information to ANS members, the technical community at large, opinion leaders, and decision makers to improve their understanding of nuclear nonproliferation issues. Become a recognized technical resource on nuclear nonproliferation, safeguards, and security issues. Serve as the integration and coordination body for nuclear nonproliferation activities for the ANS. Work cooperatively with other ANS divisions to achieve these objective nonproliferation policies.
Meeting Spotlight
Conference on Nuclear Training and Education: A Biennial International Forum (CONTE 2025)
February 3–6, 2025
Amelia Island, FL|Omni Amelia Island Resort
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 Science and Engineering
February 2025
Nuclear Technology
Fusion Science and Technology
Latest News
Fermilab center renamed after late particle physicist Helen Edwards
Fermi National Accelerator Laboratory’s Integrated Engineering Research Center, which officially opened in January 2024, is now known as the Helen Edwards Engineering Center. The name was changed to honor the late particle physicist who led the design, construction, commissioning, and operation of the lab’s Tevatron accelerator and was part of the Water Resources Development Act signed by President Biden in December 2024, according to a Fermilab press release.
Tim D. Bohm, Laila El-Guebaly, ARIES Team
Fusion Science and Technology | Volume 60 | Number 1 | July 2011 | Pages 278-282
In-Vessel Components - FW, Blanket, Shield & VV | Proceedings of the Nineteenth Topical Meeting on the Technology of Fusion Energy (TOFE) (Part 1) | doi.org/10.13182/FST11-A12365
Articles are hosted by Taylor and Francis Online.
In ARIES tokamak designs, there are assembly gaps between adjacent blanket and shield modules. These gaps allow increased levels of radiation to reach outer components. Three-dimensional models of the tokamak were used to analyze the effect of radiation streaming through both straight and stepped gaps of 1 cm and 2 cm wide. We proposed a novel idea of inserting a WC shield block within the double step region to further attenuate the streaming neutrons. Radiation damage parameters were calculated for the inboard components including the first wall, shield, manifolds, vacuum vessel, and magnet. Our results show that straight gaps allow too much radiation to reach the inboard components, resulting in large peaking in radiation damage parameters. The double stepped gap with WC shield block show reduced peaking and are effective at protecting the vacuum vessel and magnet.
