Welcome Back!!!
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Transcript of 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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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