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

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

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

direct drive

The three high yield concepts being explored on Z involve aggressive physics which will have pay off for all x-ray drive platforms

Pulse power

Pulse power

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

Pulse power

Target fabrication R & D can further enhance the margin for ignition

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

advanced x-ray drive

Systematic asymmetries can be compensated by hohlraum and capsule design

advanced x-ray drive

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

advanced x-ray drive

Funded by OFES/NNSA

- Validation needed at 10 ps

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

-size?