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November 9–12, 2025
Washington, DC|Washington Hilton
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Fusion Science and Technology
Latest News
NNSA awards BWXT $1.5B defense fuels contract
The Department of Energy’s National Nuclear Security Administration has awarded BWX Technologies a contract valued at $1.5 billion to build a Domestic Uranium Enrichment Centrifuge Experiment (DUECE) pilot plant in Tennessee in support of the administration’s efforts to build out a domestic supply of unobligated enriched uranium for defense-related nuclear fuel.
S. Bhandarkar, T. Parham, J. Fair
Fusion Science and Technology | Volume 59 | Number 1 | January 2011 | Pages 51-57
Technical Paper | Nineteenth Target Fabrication Meeting | doi.org/10.13182/FST10-3718
Articles are hosted by Taylor and Francis Online.
For the various tuning as well as ignition campaigns, targets on the National Ignition Facility (NIF) need to be filled with gases, typically with the different isotopes of H2 and He. Fill tubes that supply the two small chambers in the target, the capsule and the hohlraum, are microcapillaries that are only tens of microns in diameter and present significant impedance to flow. Knowledge of the exact pressures and gas compositions in the capsule and the hohlraum is critical for fielding targets on NIF. This requires modeling of the gas flow through the capillary tubes, at both room temperature and cryogenic temperatures. We present results from a comprehensive model and its experimental verification for a range of conditions such as temperature and pressure.