TRL tables: power conversion and lifetime

1. TRL tables: power conversion and lifetime M. S. Tillack ARIES Project Meeting March 4, 2008

2. High temperature operation and power conversion • Scope • Consequences of high temperature operation • Performance of primary and secondary power conversion systems • Does not consider temperature control within components (thermal hydraulics, MHD heat transfer, etc). This is a gray area in common with “Heat and particle flux handling”. • Key science challenges (theory + experiments) • Mass transfer • Surface chemistry • Materials degradation via chemical interactions • Material properties degradation at high temperature • Key facilities • High-temperature materials properties and thermo-mechanics test rigs • Chemical interaction static and loop facilities • Integrated heat transport (or power conversion) loops

3. Technology readiness levels for power conversion

4. Power core lifetime • Scope • All power core components • “Normal” and “off-normal” life-limiting mechanisms • This is a gray area in common with the operations subgroup. Aspects of reliability and failure rates are considered. • Key science challenges (theory + experiments) • Neutron damage, neutron-induced burn-up • Particle erosion • Corrosion damage • Disruption and ELM damage (thermomechanical, electromechanical, plasma, runaways) • Effects of thermal cycling • Key facilities • Specimen tests (neutron, plasma, HHF, chemistry) • Component tests in a laboratory environment • Component tests in fusion facilities (nuclear, non-nuclear tokamaks)

5. Technology readiness levels for power core lifetime