The new NIF ignition design relies on sophisticated 3D codes and targets, to give a confidence in ig

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The new NIF ignition design relies on
sophisticated 3D codes and targets, to give a
confidence in ignition at 1 MJ
Sophisticated target design/fab compensates for
limitations in drivers
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direct drive
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direct drive
Symmetric direct drive ignition on the NIF
requires major changes to the facility
Polar Direct Drive( PDD) achieves direct drive
ignition with NIFs beams in the Indirect Drive
configuration
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Direct drive Rochester, NRL and the Laboratories
direct drive

• Non symmetric laser illumination PDD is being
  explored
• Aggressive pulse shaping increases the margin for
  ignition
• Target designs which push our understanding
  offer hope for ignition at substantially lower
  laser energy-NRL Vin 5 107 ignition at 200kJ

Aggressive 2D designs are being validated
experimentally
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Pulse power
The three high yield concepts being explored on Z
involve aggressive physics which will have pay
off for all x-ray drive platforms
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Pulse power
Beryllium capsules important for lower Tr 220eV
of pulse power
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Pulse power
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advanced x-ray drive
Advances in x-ray drive could reduce the lost
energy or more effectively use the 4 MJ of laser
energy potentially available from NIF
The small capsule to case ratio results in low
energy coupling - advanced symmetry control
could allow less hohlraum loss More energy on
NIF is available with green and even 1 micron
Target fabrication R D can further enhance the
margin for ignition
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advanced x-ray drive
Systematic asymmetries can be compensated by
hohlraum and capsule design
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advanced x-ray drive
Shimmed targets tolerate smaller case/capsule
with increased efficiency of x-ray drive
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Funded by OFES/NNSA
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- Validation needed at 10 ps
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Nova, OMEGA and Z/R optimize annual Shot rate,
but still measured in shots/day
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-size?
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