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Title: National Ignition Facility Target Design and Fabrication

Conference ·

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-{micro}m walls. The capsule will have a 75-{micro}m 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.

Research Organization:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
W-7405-ENG-48
OSTI ID:
924012
Report Number(s):
LLNL-PROC-400011; TRN: US0802001
Resource Relation:
Journal Volume: 26; Journal Issue: 3; Conference: Presented at: 3rd Moscow Workshop TARGETS & APPLICATIONS, Moscow, Russia, Oct 11 - Oct 26, 2007
Country of Publication:
United States
Language:
English

References (44)

Graded Germanium Doped CH x Microshells Meeting the Specifications of the Megajoule Laser Cryogenic Target journal May 2007
Complete Surface Mapping of ICF Shells journal March 2004
Demonstration of Enhanced Radiation Drive in Hohlraums Made from a Mixture of High- Z Wall Materials journal April 2007
Investigation of Deuterium Permeability of Sputtered Beryllium and Graded Copper-Doped Beryllium Shells journal May 2007
The national ignition facility: path to ignition in the laboratory journal May 2006
The National Ignition Facility: Laser Performance and First Experiments journal April 2005
Characterization of National Ignitition Facility cryogenic beryllium capsules using x-ray phase contrast imaging journal October 2004
Fabrication of Beryllium Capsules with Copper-Doped Layers for NIF Targets: A Progress Report journal May 2006
Progress in direct-drive inertial confinement fusion research at the laboratory for laser energetics journal May 2006
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Laser targets compensate for limitations in inertial confinement fusion drivers journal October 2005
Increasing robustness of indirect drive capsule designs against short wavelength hydrodynamic instabilities journal May 2005
Update on Specifications for NIF Ignition Targets journal May 2007
Precision X-Ray Optical Depth Measurements in ICF Shells journal May 2007
Diamond Ablators for Inertial Confinement Fusion journal May 2006
National Ignition Facility laser performance status journal January 2007
Progress in 2 mm Glow Discharge Polymer Mandrel Development for NIF journal March 2004
Quantitative Radiography: Submicron Dimension Calibration for ICF Ablator Shell Characterization journal May 2007
Pyrolytic Removal of the Plastic Mandrel from Sputtered Beryllium Shells journal May 2006
Design of a 250 eV cryogenic ignition capsule for the National Ignition Facility journal September 2004
The Cryogenic Target for Ignition on the LMJ: Useful Tools to Achieve Nominal Temperature and Roughness Conditions of the DT Solid Layer journal May 2006
A Way to Reach the Cryogenic’s Temperature and Roughness Requirements for the Laser Megajoule Facility journal May 2007
Fabrication and Attachment of Polyimide Fill Tubes to Plastic NIF Capsules journal May 2007
Quantitative Radiography: Film Model Calibration and Dopant/Impurity Measurement in ICF Ablators journal May 2007
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Status of the development of ignition capsules in the U.S. effort to achieve thermonuclear ignition on the national ignition facility journal October 2006
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Reduction of Isolated Defects on Ge Doped CH Capsules to Below Ignition Specifications journal May 2007
Solid deuterium–tritium surface roughness in a beryllium inertial confinement fusion shell journal December 2006
Cryogenic D-T Fuel Layers Formed in 1 mm Spheres by Beta-Layering journal March 1999
Removal of GDP Mandrels from Sputter-Coated Beryllium Capsules for NIF Targets journal May 2007
Update on Specifications for NIF Ignition Targets, and Their Rollup into an Error Budget journal May 2006
The design, performance, and application of an atomic force microscope‐based profilometer
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Update on design simulations for NIF ignition targets, and the rollup of all specifications into an error budget journal May 2007
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Preparation of Polyimide Ablator Coatings Using an Improved Solvent Vapor Smoothing Process journal May 2006
Removal of the Mandrel from Beryllium Sputter Coated Capsules for NIF Targets journal May 2007
The physics basis for ignition using indirect-drive targets on the National Ignition Facility journal February 2004
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journal May 1988
Theory and Numerical Modelling of the Effects of Ablator Wall and Hohlraum Transfer Gas Thermal Resistances on Deuterium-Tritium Redistribution Rates journal May 2006

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