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Sophisticated target design/fab compensates for limitations in drivers

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. direct drive. direct drive.

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Sophisticated target design/fab compensates for limitations in drivers

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  1. 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

  2. direct drive

  3. direct drive Symmetric direct drive ignition on the NIF requires major changes to the facility Polar Direct Drive( PDD) achieves direct drive ignition with NIF’s beams in the Indirect Drive configuration

  4. direct drive Direct drive: Rochester, NRL and the Laboratories • 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

  5. 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

  6. Pulse power Beryllium capsules important for lower Tr ~ 220eV of pulse power

  7. Pulse power

  8. 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

  9. advanced x-ray drive Systematic asymmetries can be compensated by hohlraum and capsule design

  10. advanced x-ray drive Shimmed targets tolerate smaller case/capsule with increased efficiency of x-ray drive

  11. Funded by OFES/NNSA

  12. - Validation needed at 10 ps

  13. Nova, OMEGA and Z/R optimize annual Shot rate, but still measured in shots/day

  14. -size?

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