February 5-6, 2004HAPL meeting, G.Tech.

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Chamber Tasks Coordination

Presented by

A. René RaffrayUCSD

With contributions from J. Blanchard and the HAPL Chamber and Materials Community

HAPL MeetingGeorgia Institute of Technology

Atlanta, GAFebruary 5-6, 2004

February 5-6, 2004HAPL meeting, G.Tech.

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Outline

• Coordination effort

• Strategy

• Overall goals for path to laser fusion energy

• Where do the chamber tasks fit in?

• Milestones to help achieve overall goals

• Organizing the CTC

February 5-6, 2004HAPL meeting, G.Tech.

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Coordination Effort

• The chamber tasks cover: - Armor/First wall

- Blanket

- System

• Coordination of tasks to help meet overall program goals- Agree on chamber program milestones to support overall HAPL plan for laser fusion energy

- Make sure chamber tasks and schedule help meet overall chamber milestones

- Longer term process with our First Wall Battle Plan as initial step

- Common basis for experiments, design and analysis

- Promote regular communication and interaction among participants

February 5-6, 2004HAPL meeting, G.Tech.

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Chamber Tasks Strategy• Although IFE operation is highly cyclic, only the armor experiences large

temperature transient- Focus limited laser IFE R&D resources on key IFE-specific armor/first wall issues - Make the most of information from the MFE design and R&D effort on blanket

• Focus the resources on the materials with the highest probability of success within the proposed time frame

- Tungsten as front runner armor material - Ferritic steel as structural material.

• Armor/FW Go/No-Go and Critical Issues (1) Viable Material Structures(2) Helium and Hydrogen Isotope Diffusion.(3) Ablation (ions & X-rays including surface roughening)(4) Thermomechanical Fatigue and Fracture Toughness(5) Thermophysical Properties (including irradiation effects)

• Other Issues to be addressed later depending on blanket and system include:(6) Need for Barrier Coating(7) Corrosion, Mass Transport and Compatibility(8) Reaction and Release Under Accident Scenarios

The Path to develop Laser Fusion Energy(courtesy of John Sethian)

Phase IIValidatescience &technology2006 - 2014

Phase IIIEngineeringTest Facilityoperating 2020

Full size laser: 2.4 MJ, 60 laser lines Optimize targets for high yield Develop materials and components. 300-700 MW net electricity

Phase I:Basic fusionscience &technology1999- 2005

Ignition Physics Validation

•MJ target implosions (NIF)•Calibrated 3D simulations

Target design & Physics

•2D/3D simulations•1-30 kJ laser-target expts

Full Scale Components

•Power plant laser beamline •Target fab/injection facility •Power Plant design

HAPL•Krypton fluoride laser•Diode pumped solid state laser•Target fabrication & injection•Final optics•Chambers materials/design

February 5-6, 2004HAPL meeting, G.Tech.

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Proposed Chamber Program Milestones in Support of Overall Development Path for Laser Fusion Energy

Chamber Program Milestones

2004-05

2008

2011

Credible case that dry wall is viable for laser IFE for

Phase II Complete study of wider range of W/FS

types and downselect for further multi-effect

testing 2014

Path to develop Laser Fusion Energy

Phase I: Basic Fusion Science & Technology Phase II: Full Scale Components (IRE) Phase III: ETF

1999-2005 2006-2014 2014-

Select best armor/FW/chamber unit for ETF and start fabrication and final qualification testing(Also for chamber

test modules) Armor/FW/chamber ready for ETF + at least one chamber

test module

February 5-6, 2004HAPL meeting, G.Tech.

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How to Organize Chamber Tasks to Help Make the Chamber Milestones Happen?

• Need to organize schedule and milestones for tasks addressing the critical issues

February 5-6, 2004HAPL meeting, G.Tech.

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Several Possible Blanket Concepts from MFE

February 5-6, 2004HAPL meeting, G.Tech.

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Organizing Chamber Tasks Coordination• CTC document

- Chamber tasks plan including milestones- Common materials data base (properties) for analysis- Design & analysis guidelines- Protocol for testing

• Regular Communication- Conference calls ( every ~6 weeks)- Meetings (as part of regular HAPL meeting or arranged separately)- “Kick off meeting proposed 2-3 weeks from now to discuss CTC

document being circulated (Feb. 19 or 26 at UCSD proposed?)

• Help pose and discuss questions with overall program view, e.g. - Best use of ETF for addressing chamber issues- Other facility for integrated testing (w/o neutrons)- How dependent are we on an external neutron irradiation facility (e.g. IFMIF)?

February 5-6, 2004HAPL meeting, G.Tech.

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Additional Viewgraph

February 5-6, 2004HAPL meeting, G.Tech.

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Schematic of Chamber Tasks Flow Chart (Strategy)