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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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Fusion Science and Technology
February 2024
Latest News
Can hydrogen be the transportation fuel in an otherwise nuclear economy?
Let’s face it: The global economy should be powered primarily by nuclear power. And it probably will by the end of this century, with a still-significant assist from renewables and hydro. Once nuclear systems are dominant, the costs come down to where gas is now; and when carbon emissions are reduced to a small portion of their present state, it will become obvious that most other sources are only good in niche settings. I mean, why use small modular reactors to load-follow when they can just produce that power instead of buffering it?
K. Ida, S. Inagaki, M. Yoshinuma, N. Tamura, T. Morisaki, LHD Experiment Group
Fusion Science and Technology | Volume 58 | Number 1 | July-August 2010 | Pages 113-121
Chapter 3. Confinement and Transport | Special Issue on Large Helical Device (LHD) | doi.org/10.13182/FST10-A10798
Articles are hosted by Taylor and Francis Online.
Radial profiles of the space potential are measured at the n/m = 1/1 magnetic island produced by external perturbation coils in the Large Helical Device (LHD). Both the temperature and space potential are flat inside the magnetic island, and the large radial electric field shear appears at the boundary of the magnetic island because the radial electric field is zero inside the magnetic island. However, when the width of the magnetic island becomes large, the space potential profile becomes peaked because of the convective flow along the magnetic flux surface inside the magnetic island around the O point. The appearance of the convective flow suggests that the perpendicular viscosity is significantly reduced inside the magnetic island. The perturbation transport study using the cold-pulse propagation is a useful tool to study the transport inside the magnetic island, where the temperature gradient is zero in the steady state. Inside the magnetic island, the cold-pulse propagates slowly from the boundary toward the center, and radial profiles of the delay time are peaked at the magnetic island. The large delay time (slow pulse propagation) indicates that the thermal diffusivity is even small inside the magnetic island. These experimental results indicate that the heat and momentum transport are significantly improved inside the magnetic island although the temperature and flow gradients are zero due to the lack of heat and momentum fluxes.