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Division Spotlight
Young Members Group
The Young Members Group works to encourage and enable all young professional members to be actively involved in the efforts and endeavors of the Society at all levels (Professional Divisions, ANS Governance, Local Sections, etc.) as they transition from the role of a student to the role of a professional. It sponsors non-technical workshops and meetings that provide professional development and networking opportunities for young professionals, collaborates with other Divisions and Groups in developing technical and non-technical content for topical and national meetings, encourages its members to participate in the activities of the Groups and Divisions that are closely related to their professional interests as well as in their local sections, introduces young members to the rules and governance structure of the Society, and nominates young professionals for awards and leadership opportunities available to members.
Meeting Spotlight
2024 ANS Annual Conference
June 16–19, 2024
Las Vegas, NV|Mandalay Bay Resort and Casino
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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Latest News
NRC updating GEIS rule for new nuclear technology
The Nuclear Regulatory Agency is issuing a proposed generic environmental impact statement (GEIS) for use in reviewing applications for new nuclear reactors.
In an April 17 memo, NRC secretary Carrie Safford wrote that the commission approved NRC staff’s recommendation to publish in the Federal Register a proposed rule amending 10 CFR Part 51, “Environmental Protection Regulations for Domestic Licensing and Related Regulatory Functions.”
Yoshi Hirooka
Fusion Science and Technology | Volume 52 | Number 4 | November 2007 | Pages 1040-1044
Technical Paper | Plasma Engineering and Diagnostics | doi.org/10.13182/FST07-A1632
Articles are hosted by Taylor and Francis Online.
For the successful steady state operation of deuterium-tritium (DT) fusion reactors, helium (He) ash needs to be removed continuously from the burning core, along with unburned hydrogenic fuel particles, to sustain the power generation. This will require enormous particle pumping capabilities despite the fact that helium is the most difficult gas to be pumped by means of cryogenic condensation. In the present work, zero-dimensional, four-reservoir (core-plasma, SOL-plasma, gas-phase, and wall material) global particle balance modeling has been conducted for both DT-fuel and He-ash particles. Modeling results indicate that, for the density control of He-ash particles in the burning core, passive wall pumping via codeposition with eroded plasma-facing materials would definitely be necessary to compensate for the lack of pumping speed provided by conventional vacuum equipment. Recent experimental data on helium codeposition with lithium have been used as input for modeling and results indicate that lithium-gettered moving-surface plasma-facing components can meet the He-ash pumping requirements.