Removal of the Mandrel from Beryllium Sputter Coated Capsules for NIF Targets

Bhandarkar, S. D.; Letts, Stephan A.; Buckley, Steven R.; Alford, C.; Lindsey, E. F.; Hughes, James D.; Youngblood, K. P.; Moreno, K. A.; Xu, Hongwei; Huang, H.; Nikroo, A.

doi:10.13182/fst07-a1445

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Cited by 4 publications

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“…This is accomplished by laser drilling a hole through the wall and "burning out" the mandrel in air at elevated temperature Bhandarkar et al, 2007. The specification on the hole, which is necessary for D-T fuel filling as well, are severe, with a diameter of 5-µm maximum through most of the 160-µm wall.…”

Section: Figurementioning

confidence: 99%

National Ignition Facility target design and fabrication

et al. 2008

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The current capsule target design for the first ignition experiments at the NIF Facility beginning in 2009 will be a copper-doped beryllium capsule, roughly 2 mm in diameter with 160-µm walls. The capsule will have a 75-µm layer of solid DT on the inside surface, and the capsule will driven with x-rays generated from a gold/uranium cocktail hohlraum. The design specifications are extremely rigorous, particularly with respect to interfaces, which must be very smooth to inhibit Rayleigh-Taylor instability growth. This paper outlines the current design, and focuses on the challenges and advances in capsule fabrication and characterization; hohlraum fabrication, and D-T layering and characterization.2

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Section: Figurementioning

confidence: 99%