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Division Spotlight
Thermal Hydraulics
The division provides a forum for focused technical dialogue on thermal hydraulic technology in the nuclear industry. Specifically, this will include heat transfer and fluid mechanics involved in the utilization of nuclear energy. It is intended to attract the highest quality of theoretical and experimental work to ANS, including research on basic phenomena and application to nuclear system design.
Meeting Spotlight
ANS Student Conference 2025
April 3–5, 2025
Albuquerque, NM|The University of New Mexico
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
Latest News
First astatine-labeled compound shipped in the U.S.
The Department of Energy’s National Isotope Development Center (NIDC) on March 31 announced the successful long-distance shipment in the United States of a biologically active compound labeled with the medical radioisotope astatine-211 (At-211). Because previous shipments have included only the “bare” isotope, the NIDC has described the development as “unleashing medical innovation.”
Mitsushi Abe, Kazuhiro Takeuchi
Fusion Science and Technology | Volume 29 | Number 2 | March 1996 | Pages 277-293
Technical Paper | Plasma Engineering | doi.org/10.13182/FST96-A30714
Articles are hosted by Taylor and Francis Online.
Tokamak operation techniques to control the poloidal magnetic field using multivariable poloidal field coils (MPFCs) were applied to the Hitachi tokamak HT-2, Two problems encountered in operating a tokamak with MPFCs were identified: low-voltage startup and equilibrium control without interference. The key to their solution was accurate control of the poloidal magnetic field. To obtain multipole fields, a singular value decomposition was applied to a response matrix from the coil current to the magnetic flux value at the plasma surface region. The multipole fields are orthogonal bases of the poloidal field, and the interference was cleared using these modes. A control technique using the multipole fields was applied to control the null point position of the poloidal magnetic field during breakdown, which made it possible to get breakdown with a low loop voltage. During the flattop phase, good controllability without interference was obtained using the concept of a multipole magnetic field.