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Division Spotlight
Reactor Physics
The division's objectives are to promote the advancement of knowledge and understanding of the fundamental physical phenomena characterizing nuclear reactors and other nuclear systems. The division encourages research and disseminates information through meetings and publications. Areas of technical interest include nuclear data, particle interactions and transport, reactor and nuclear systems analysis, methods, design, validation and operating experience and standards. The Wigner Award heads the awards program.
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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Latest News
Argonne’s METL gears up to test more sodium fast reactor components
Argonne National Laboratory has successfully swapped out an aging cold trap in the sodium test loop called METL (Mechanisms Engineering Test Loop), the Department of Energy announced April 23. The upgrade is the first of its kind in the United States in more than 30 years, according to the DOE, and will help test components and operations for the sodium-cooled fast reactors being developed now.
G. W. Barnes, A. Janos, D. Loesser, D. K. Owens, M. Ulrickson
Fusion Science and Technology | Volume 19 | Number 3 | May 1991 | Pages 1761-1764
Impurity Control and Plasma-Facing Component | Proceedings of the Ninth Topical Meeting on the Technology of Fusion Energy (Oak Brook, Illinois, October 7-11, 1990) | doi.org/10.13182/FST91-A29597
Articles are hosted by Taylor and Francis Online.
The TFTR Bumper Limiter (BL)1,2 is a continuous toroidal belt limiter which subtends 120° poloidally on the inner wall of the vacuum vessel, is symmetric about the midplane of the vessel and has a total area of 22 m2. The plasma facing surface of the BL consists of graphite tiles mounted on water-cooled Inconel backing plates. During plasma operation with high power neutral beam injection (NBI), “carbon blooms”3 developed when surface temperatures at localized areas on the limiter exceeded 1700 C. The blooms severely limited plasma performance. During the February–April 1990 shutdown, 721 of the original POCO graphite tiles were replaced with 4D Carbon Fiber Composite (CFC)4 tiles to improve the performance of the Bumper Limiter. Another source of blooms was cutouts in the BL made for diagnostic access to the plasma. During the shutdown, the edge tiles at the cutouts were modified to reduce the power flux to levels insufficient to cause a bloom. This paper describes the tile replacement and modification program including material selection and the rationale for the tile replacement locations. The methods used to mechanically align the midplane of the limiter to ±0.5mm are addressed. Future plans to align the entire limiter to the toroidal magnetic field to similar accuracy using magnetic and mechanical measurements will also be discussed. The improvement in plasma performance due to the suppression of blooms due to these upgrades will be shown.
