Welcome Back!!!

1. Feb 2001: NRL

2. May 2001: NRL

3. Nov 2001: LLNL

4. Apr 2002: GA

5. Dec 2002: NRL

6. Apr 2003: Sandia

7. Sep 2003: Wisconsin

8. Feb 2004: Georgia Tech

9. Jun 2004: UCLA

10. Oct 2004: PPPL

11. Mar 2005: NRL

12. Jun 2005: LLNL

13. Nov 2005: LLE

14. Mar 2006: ORNL

15. Aug 2006: GA

16. Dec 2006: PPPL

17. Oct 2007: NRL

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1,2,5,11,17

Welcome Back!!!

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We are developing the science and technology for a Fusion Energy

based on Lasers and Direct Drive Targets

HOW?

• Develop the science and technology in concert

• Develop as an integrated system

• Focus on goal of attractive power plant

WHY?Potential forLower development costs-and- Lower running costs:

• Modular Driver

• Physics from ICF program

• Need only one facility to develop S&T

• Separable components

• Focus on goal of attractive power plant

We should be aware of external critiques

"I do not share your confidence in the

engineering feasibility of IFE........*"

* This is a real quote, but we will attribute it to: Professor John Nerdelbaum Frink, Jr.

On addressing the critics: what we have accomplished, what we need to do (1 of 3)

What we have done What we still need to do

You have not proven the target works

Simulations show sufficient gain, based on bench marked codes

Experiments at prototypical intensities

Refine the physics Advanced DD designs

You don’t have a laser

Two Lasers shown: o Energy (50-700 J) o Rep-rate (2.5 -10 Hz) o Long runs (104- 105) o Low XDL o Predict efficiency o Scalability

Integrated test: o Efficiency o Durability o Rep-rate o Pulse shape o High uniformity o Wavelength

You don’t have an optic that can survive the laser, and resist the target emissions

GIMM high long term laser damage threshold.

Neutronics: downstream optics OK

Large area test Integrated design:

neutron, x-ray resistant Revisit Dielectrics

what we have accomplished, what we need to do (2 of 3)

What we have done What we still need to do

You can’t mass produce the target cheaply enough

Demo mass produced foam shells

Smooth DT over foam Costing: < $0.16 ea

Improve yield CH Overcoat Demo cryo layering

You don’t have a chamber wall

He ions remaining major problem

Materials R&D Magnetic Intervention

may solve everything

Advanced wall configurations

R & D He migration MI: refine physics, ion

dumps

The target won’t survive injection into the chamber

No gas in chamber Small chamber (MI) DT/foam resilient to t

Experiments: Thermal response & DT strength

You can’t get the target moving fast enough, nor place it accurately

MI requires only 70 m/sec. A lot of options

Build injector, but its low priority for now

what we have accomplished, what we need to do (3 of 3)

What we have done What we still need to do

You can’t hit that that pea- size target in that huge chamber

Bench test demo shows 150 microns accuracy

Need 20 microns

You don’t have a way to breed and get the heat out

Designs for blanket

using PBLi or FLIBE. 50% efficiency sufficient T breeding

See below

You don’t have an integrated design

Tritium System Vacuum System Several integrated designs at concept level

We will do a full design when we have something attractive!! AND NOT BEFORE

WORKSHOP AGENDA

Wednesday

Chamber Technologies

Poster Break III (Friedman Room)

Target Design

Target Fabrication: Foam Shells

Lunch: (Friedman Room)

Target Fabrication: Cryogenics

Target Engagement

Meeting Wrap up

Tuesday

Lasers

Poster Break I (Friedman Room)

Chamber Physics

Group Photo

Lunch (Friedman Room)

Materials: Experiments

Poster Break II (Friedman Room)

Materials: Modeling

Final Optics

Dinner: On your own

Bad things will happen if you do not keep your talk on time