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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.
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Utility Working Conference and Vendor Technology Expo (UWC 2024)
August 4–7, 2024
Marco Island, FL|JW Marriott Marco Island
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
ARPA-E announces $40 million to develop transmutation technologies for UNF
The Department of Energy’s Advanced Research Projects Agency–Energy (ARPA-E) announced $40 million in funding to develop cutting-edge technologies to enable the transmutation of used nuclear fuel into less-radioactive substances. According to ARPA-E, the new initiative addresses one of the agency’s core goals as outlined by Congress: to provide transformative solutions to improve the management, cleanup, and disposal of radioactive waste and spent nuclear fuel.
B. Reneaume, G. Allegre, R. Botrel, H. Bourcier, R. Bourdenet, O. Breton, R. Collier, C. Dauteuil, F. Durut, A. Faivre, E. Fleury, I. Geoffray, G. Geoffray, L. Jeannot, L. Jehanno, O. Legaie, G. Legay, S. Meux, G. Paquignon, J. P. Perin, J. Schunk, M. Theobald, C. Vasselin, F. Viargues
Fusion Science and Technology | Volume 59 | Number 1 | January 2011 | Pages 148-154
Technical Paper | Nineteenth Target Fabrication Meeting | doi.org/10.13182/FST11-A11517
Articles are hosted by Taylor and Francis Online.
The cryogenic target assemblies (CTAs) designed for Laser Mégajoule (LMJ) experiments have many functions and have to meet severe specifications imposed by implosion physics, the CTA thermal environment, and the CTA interfaces with the Mégajoule laser cryogenic target positioner. Therefore, CTA fabrication uses many challenging materials and requires several technological studies. During the last 2 years, many developments have enabled better collection of comprehensive data on target constitutive materials and improvements in the fabrication of the CTA base, hohlraum, and aluminum turret.Studies have been carried out (a) to better characterize thermal properties of materials allowing optimization of the thermal simulation of the hohlraum, (b) to improve the CTA base fabrication process in order to optimize thermal studies of the LMJ experimental filling station (EFS), and (c) to determine coatings on the polyimide membrane that may limit the 300 K thermal effect on the microshell and increase the deuterium-tritium fuel lifetime.CTAs have been produced to evaluate fabrication knowledge, to characterize CTAs, to study air tightness, and to study filling and D2 ice layering on the EFS.An overview of the results that have been obtained during the past 2 years is presented in this paper.