Materials Discussion / Integrated Testing Plan Final Optics Transmissive - issues related to absorption Reflective - LIDT and effect of dust - neutron-induced.

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Materials Discussion / Integrated Testing Plan Final Optics Transmissive - issues related to absorption Reflective - LIDT and effect of dust - neutron-induced swelling in GIMM and substrate - mitigate neutron induced dimensional change Unique Issues Cyclic Thermomechanics - modeling - high cycle fatigue of engineering matl’s Pulsed Neutron Effects Pulsed X-ray - threshold and roughening He Ablation Effects Pulsed Ion Materials Specific Issues Graphite Composite - Lifetime under high temp. irradiation - Tritium retention during high temp. irradiation - Radiation Enhanced Sublimation at high temp. Ceramic Composite System - development and properties including fatigue Refractory Armored System - development and properties including fatigue Alloy system - effects of environment on fatigue properties

Materials Discussion / Integrated Testing Plan Final Optics Transmissive - issues related to absorption Reflective - LIDT and effect of dust - neutron-induced swelling in GIMM and substrate - mitigate neutron induced dimensional change Unique Issues Cyclic Thermomechanics - modeling - high cycle fatigue of engineering matl’s Pulsed Neutron Effects Pulsed X-ray - threshold and roughening He Ablation Effects Pulsed Ion Materials Specific Issues Graphite Composite - Lifetime under high temp. irradiation - Tritium retention during high temp. irradiation - Radiation Enhanced Sublimation at high temp. Ceramic Composite System - development and properties including fatigue Refractory Armored System - development and properties including fatigue Alloy system - effects of environment on fatigue properties } Absorption studies indicated that loss would be unacceptable high in transmissive optics. Emphasis was shifted to reflective optics

Materials Discussion / Integrated Testing Plan Final Optics Transmissive - issues related to absorption Reflective - LIDT and effect of dust - neutron-induced swelling in GIMM and substrate - mitigate neutron induced dimensional change Unique Issues Cyclic Thermomechanics - modeling - high cycle fatigue of engineering matl’s Pulsed Neutron Effects Pulsed X-ray - threshold and roughening He Ablation Effects Pulsed Ion Materials Specific Issues Graphite Composite - Lifetime under high temp. irradiation - Tritium retention during high temp. irradiation - Radiation Enhanced Sublimation at high temp. Ceramic Composite System - development and properties including fatigue Refractory Armored System - development and properties including fatigue Alloy system - effects of environment on fatigue properties } Current Optics Program Plan

Materials Discussion / Integrated Testing Plan Final Optics Transmissive - issues related to absorption Reflective - LIDT and effect of dust - neutron-induced swelling in GIMM and substrate - mitigate neutron induced dimensional change Unique Issues Cyclic Thermomechanics - modeling - high cycle fatigue of engineering matl’s Pulsed Neutron Effects Pulsed X-ray - threshold and roughening He Ablation Effects Pulsed Ion Materials Specific Issues Graphite Composite - Lifetime under high temp. irradiation - Tritium retention during high temp. irradiation - Radiation Enhanced Sublimation at high temp. Ceramic Composite System - development and properties including fatigue Refractory Armored System - development and properties including fatigue Alloy system - effects of environment on fatigue properties } } pending

Materials Discussion / Integrated Testing Plan Final Optics Transmissive - issues related to absorption Reflective - LIDT and effect of dust - neutron-induced swelling in GIMM and substrate - mitigate neutron induced dimensional change Unique Issues Cyclic Thermomechanics - modeling - high cycle fatigue of engineering matl’s Pulsed Neutron Effects Pulsed X-ray - threshold and roughening He Ablation Effects Pulsed Ion Materials Specific Issues Graphite Composite - Lifetime under high temp. irradiation - Tritium retention during high temp. irradiation - Radiation Enhanced Sublimation at high temp. Ceramic Composite System - development and properties including fatigue Refractory Armored System - development and properties including fatigue Alloy system - effects of environment on fatigue properties } Ghoniem work

Final Optics Transmissive - issues related to absorption Reflective - LIDT and effect of dust - neutron-induced swelling in GIMM and substrate - mitigate neutron induced dimensional change Unique Issues Cyclic Thermomechanics - modeling - high cycle fatigue of engineering matl’s Pulsed Neutron Effects Pulsed X-ray - threshold and roughening He Ablation Effects Pulsed Ion Materials Specific Issues Graphite Composite - Lifetime under high temp. irradiation - Tritium retention during high temp. irradiation - Radiation Enhanced Sublimation at high temp. Ceramic Composite System - development and properties including fatigue Refractory Armored System - development and properties including fatigue Alloy system - effects of environment on fatigue properties } Pending ~200 MPa at 10 8 cycles

Materials Discussion / Integrated Testing Plan Final Optics Transmissive - issues related to absorption Reflective - LIDT and effect of dust - neutron-induced swelling in GIMM and substrate - mitigate neutron induced dimensional change Unique Issues Cyclic Thermomechanics - modeling - high cycle fatigue of engineering matl’s Pulsed Neutron Effects Pulsed X-ray - threshold and roughening He Ablation Effects Pulsed Ion Materials Specific Issues Graphite Composite - Lifetime under high temp. irradiation - Tritium retention during high temp. irradiation - Radiation Enhanced Sublimation at high temp. Ceramic Composite System - development and properties including fatigue Refractory Armored System - development and properties including fatigue Alloy system - effects of environment on fatigue properties } Limited ongoing work in modeling community

Materials Discussion / Integrated Testing Plan Final Optics Transmissive - issues related to absorption Reflective - LIDT and effect of dust - neutron-induced swelling in GIMM and substrate - mitigate neutron induced dimensional change Unique Issues Cyclic Thermomechanics - modeling - high cycle fatigue of engineering matl’s Pulsed Neutron Effects Pulsed X-ray - threshold and roughening He Ablation Effects Pulsed Ion Materials Specific Issues Graphite Composite - Lifetime under high temp. irradiation - Tritium retention during high temp. irradiation - Radiation Enhanced Sublimation at high temp. Ceramic Composite System - development and properties including fatigue Refractory Armored System - development and properties including fatigue Alloy system - effects of environment on fatigue properties } } } Planned and Ongoing and Planned, ORNL,UNC,DELFT Ongoing and Plannned,

Materials Discussion / Integrated Testing Plan Final Optics Transmissive - issues related to absorption Reflective - LIDT and effect of dust - neutron-induced swelling in GIMM and substrate - mitigate neutron induced dimensional change Unique Issues Cyclic Thermomechanics - modeling - high cycle fatigue of engineering matl’s Pulsed Neutron Effects Pulsed X-ray - threshold and roughening He Ablation Effects Pulsed Ion Materials Specific Issues Graphite Composite - Lifetime under high temp. irradiation - Tritium retention during high temp. irradiation - Radiation Enhanced Sublimation at high temp. Ceramic Composite System - development and properties including fatigue Refractory Armored System - development and properties including fatigue Alloy system - effects of environment on fatigue properties { Current OFES/HAPL work HFIR Irradiation

Materials Discussion / Integrated Testing Plan Final Optics Transmissive - issues related to absorption Reflective - LIDT and effect of dust - neutron-induced swelling in GIMM and substrate - mitigate neutron induced dimensional change Unique Issues Cyclic Thermomechanics - modeling - high cycle fatigue of engineering matl’s Pulsed Neutron Effects Pulsed X-ray - threshold and roughening He Ablation Effects Pulsed Ion Materials Specific Issues Graphite Composite - Lifetime under high temp. irradiation - Tritium retention during high temp. irradiation - Radiation Enhanced Sublimation at high temp. Ceramic Composite System - development and properties including fatigue Refractory Armored System - development and properties including fatigue Alloy system - effects of environment on fatigue properties { Waiting for completion of thermal ablation study { Pending

Final Optics Transmissive - issues related to absorption Reflective - LIDT and effect of dust - neutron-induced swelling in GIMM and substrate - mitigate neutron induced dimensional change Unique Issues Cyclic Thermomechanics - modeling - high cycle fatigue of engineering matl’s Pulsed Neutron Effects Pulsed X-ray - threshold and roughening He Ablation Effects Pulsed Ion Materials Specific Issues Graphite Composite - Lifetime under high temp. irradiation - Tritium retention during high temp. irradiation - Radiation Enhanced Sublimation at high temp. Ceramic Composite System - development and properties including fatigue Refractory Armored System - development and properties including fatigue Alloy system - effects of environment on fatigue properties { Ongoing development Fatigue Planned { Proposed FY-03

Round-Robin Materials All “candidate” optical and structural materials under the HAPL program are being coordinated to ensure uniformity in materials chemistry, history and where appropriate the surface condition (eg polishing for surface studies.) Currently, the “candidate” materials being distributed are: Tungsten:Zone refined single crystal (99.999%) Chemically Vapor Deposited (99.995%) Powder met. Polycrystalline (99.99%) Graphite:FMI-222 balanced weave pitch fiber/matrix composite Segri Great Lakes Near Isotropic Candidate Nuclear Graphite Silicon Carbide:Rohm-Haas CVD Silicon Carbide Aluminum:1000 series, fully annealed others tbd