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Nuclear Energy Conference & Expo (NECX)
September 8–11, 2025
Atlanta, GA|Atlanta Marriott Marquis
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Fusion Science and Technology
Latest News
ANS joins others in seeking to discuss SNF/HLW impasse
The American Nuclear Society joined seven other organizations to send a letter to Energy Secretary Christopher Wright on July 8, asking to meet with him to discuss “the restoration of a highly functioning program to meet DOE’s legal responsibility to manage and dispose of the nation’s commercial and legacy defense spent nuclear fuel (SNF) and high-level radioactive waste (HLW).”
Denis Chatain, Jean Paul Perin, Olivier Chanal, Denis Desenne
Fusion Science and Technology | Volume 38 | Number 1 | July 2000 | Pages 143-148
Technical Paper | Thirteenth Target Fabrication Specialists’ Meeting | doi.org/10.13182/FST00-A36132
Articles are hosted by Taylor and Francis Online.
The cryogenic targets of the Laser Megajoule facility (LMJ) are hollow spheres. Their internal walls are covered with a solid layer of frozen deuterium-tritium (D-T). One issue of inertial confinement fusion experiments is to guarantee the quality of the geometry of fuel layer. Cryogenic targets must be cooled at a temperature near the triple point (19K) with a very good stability (0.2mK) for many hours. This period is used to position the target with an accuracy of ±5μm at the center of the experimental vacuum vessel where the 240 laser beams are focalized. A complex cryogenic infrastructure has been conceived to insure the continuity of the cryogenic chain from the filling station located at CEA/Valduc in Burgundy to the LMJ experimental chamber installed in the vicinity of Bordeaux. The design of the target and a detailed description of the infrastructure are presented. A first prototype of cryogenic grip has been fabricated and characterized. Some experimental results are given.