ANS is committed to advancing, fostering, and promoting the development and application of nuclear sciences and technologies to benefit society.
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Division Spotlight
Radiation Protection & Shielding
The Radiation Protection and Shielding Division is developing and promoting radiation protection and shielding aspects of nuclear science and technology — including interaction of nuclear radiation with materials and biological systems, instruments and techniques for the measurement of nuclear radiation fields, and radiation shield design and evaluation.
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
Latest News
Proving DRACO will deliver
The United States is now closer than it has been in over five decades to launching the first nuclear thermal rocket into space, thanks to DRACO—the Demonstration Rocket for Agile Cislunar Orbit.
S. Sharafat, M. Demetriou, N. Ghoniem, B. Williams, R. Nygren
Fusion Science and Technology | Volume 39 | Number 2 | March 2001 | Pages 863-867
Divertor and Plasma-Facing Components | doi.org/10.13182/FST01-A11963347
Articles are hosted by Taylor and Francis Online.
A novel concept for drastically improving the surface heat load capability of helium-cooled tungsten-alloy tubes is being developed for plasma facing components. The concept utilizes ultra-low density (90% porosity) W-foam, which is chemical-vapor-deposited inside a W-tube. The W-foam enhances the effective heat transfer coefficient inside the tube by significantly increasing the conduction path from the wall to the coolant fluid. A mockup of the W-tube/W-foam system has been constructed for testing at the helium loop and electron beam facility at Sandia National Laboratories, Albuquerque, NM. A finite element model (FEM) was constructed based on a 3-D solid model of the test section. The enhanced heat transfer coefficient was determined based on fundamental heat transfer principles through porous media. The porous tungsten heat exchanger tube exhibits a 3 fold improved surface heat load capability relative to a plain W-tube at temperatures above 1200°C.