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Characterization Specifications for Baseline Indirect Drive NIF Targets

R.B Stephens, S.W. Haan, D.C. Wilson

Fusion Science and Technology / Volume 41 / Number 3P1 / Pages 226-233

May 2002

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Successful ignition in NIF will require targets that meet stringent standards as to symmetry, composition, and dimensions. We describe here the current understanding of specifications for baseline indirect drive targets of each of the three types of ablators: beryllium, polyimide, and plasma polymer. These specifications include the range of values for all targets of each group, and the variation in value allowed in a specific target of that group. They cover all of the components which make up a target, and which are critical to an implosion: the hohlraum and its components — windows, capsule support foil and gas fill — and the shell and its DT ice layer. These specifications are preliminary and incomplete; they will necessarily evolve with design details and with increasing understanding of target dynamics. They are compiled here as a reference for the ICF community and a basis on which to plan future work: to fill in the gaps and to develop thenecessary characterization techniques. Future work will also include the requirements for direct drive targets.

 
 
 
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