Expert-level fusion energy covering plasma physics fundamentals, confinement methods, tokamak design, ITER, private fusion ventures, and the path to commercial fusion power.
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D-T fusion: deuterium plus tritium produces helium-4 plus neutron plus 17.6 MeV. D-T preferred: highest cross section at achievable temperatures, around 100 million C. Lawson criterion: n times tau times T must exceed threshold for net energy gain. Q factor: fusion energy out over heating energy in, Q greater than 1 means ignition. Tritium breeding: lithium blanket produces tritium from neutron capture.
Tokamak: toroidal plasma confined by combined toroidal and poloidal magnetic fields. Plasma current: drives poloidal field component, generated by transformer action. Beta limit: ratio of plasma pressure to magnetic pressure, stability constraint. ELMs: edge-localized modes, periodic instabilities that erode plasma-facing components. Disruptions: sudden loss of plasma confinement, large energy deposition on walls.
ITER: international tokamak under construction in France, Q equals 10 target. DEMO: demonstration power plant following ITER, Q greater than 25, net electricity. Plasma-facing materials: tungsten divertor, beryllium first wall in ITER. Superconducting magnets: REBCO high-temperature superconductors in new designs.
Commonwealth Fusion: SPARC tokamak using high-field HTS magnets, compact design. TAE Technologies: field-reversed configuration, hydrogen-boron fuel target. Helion Energy: pulsed FRC approach, direct energy conversion. Inertial confinement: NIF achieved ignition in 2022, laser-driven approach.
| Pitfall | Fix |
|---|---|
| Confusing scientific and engineering breakeven | Q=1 is not commercially viable |
| Ignoring tritium breeding challenge | Tritium is scarce, must breed from lithium |
| Assuming tokamak is only path | Multiple confinement concepts under development |
| Underestimating materials challenge | 14 MeV neutrons cause severe radiation damage |
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概要と使いどころ
Expert-level abstract algebra knowledge. Use when working with groups, rings, fields, modules, Galois theory, representation theory, or algebraic structures. Also use when the user mentions 'group', 'ring', 'field', 'homomorphism', 'isomorphism', 'normal subgroup', 'quotient group', 'Sylow theorem', 'Galois theory', 'polynomial ring', 'ideal', 'module', 'vector space', or 'representation theory'.
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Expert-level acoustics knowledge. Use when working with sound waves, acoustic propagation, resonance, standing waves, Doppler effect, room acoustics, ultrasound, noise control, musical acoustics, or architectural acoustics. Also use when the user mentions 'sound wave', 'decibel', 'frequency', 'resonance', 'standing wave', 'Doppler effect', 'acoustic impedance', 'reverberation', 'ultrasound', 'noise control', 'harmonics', or 'sound intensity'.
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Expert-level aerodynamics covering subsonic and supersonic flow, lift and drag, airfoil theory, boundary layers, compressible flow, and CFD methods.
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Expert-level air quality engineering covering pollutant sources, atmospheric dispersion, air quality standards, emission controls, and air quality modeling.
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Expert-level aircraft structures covering structural design philosophy, wing and fuselage analysis, fatigue and damage tolerance, composite structures, and certification.
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Expert-level algorithms and complexity theory covering sorting, searching, graph algorithms, dynamic programming, greedy algorithms, NP-completeness, and algorithm design paradigms.
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