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Decommissioning & Environmental Sciences
The mission of the Decommissioning and Environmental Sciences (DES) Division is to promote the development and use of those skills and technologies associated with the use of nuclear energy and the optimal management and stewardship of the environment, sustainable development, decommissioning, remediation, reutilization, and long-term surveillance and maintenance of nuclear-related installations, and sites. The target audience for this effort is the membership of the Division, the Society, and the public at large.
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Fusion Science and Technology
The Sodium Reactor Experiment
In February 1957, construction was completed on the Sodium Reactor Experiment (SRE), a sodium-cooled, graphite-moderated reactor with an output of 20 MWt. The design of theSRE had begun three years earlier in 1954, and construction started in April 1955. On April 25, 1957, the reactor reached criticality, and the SRE operated until February 1964.
C. Kong, E. M. Giraldez, J. W. Crippen, H. Huang, M. L. Hoppe, Jr., M. Vu, K. J. Boehm, N. G. Rice, F. H. Elsner, P. Fitzsimmons, M. P. Farrell
Fusion Science and Technology | Volume 73 | Number 3 | April 2018 | Pages 363-369
Technical Paper | doi.org/10.1080/15361055.2017.1397486
Articles are hosted by Taylor and Francis Online.
Current capsules used at the National Ignition Facility utilize a single-shell design comprised of a single ablator material. Although single-shell designs are currently the standard design, they suffer from several physics disadvantages, such as sensitivity to asymmetries and instabilities. The double shell is a proposed design utilizing a high-Z inner metal shell with a low-Z outer shell that is intended to mitigate the issues associated with typical single-shell designs.
Electroplating is one method that can be utilized to fabricate high-Z metal shells. Au is one particular material that can be electroplated with high density and uniformity. Capsule fill tube assemblies (CFTAs) built from these Au shells have passed all cryogenic leak tests. The shells have a low native surface roughness and are free of voids. Au shells have been successfully fabricated, characterized, and built into CFTAs.