David Kirtley 深度访谈

David Kirtley explains fusion and fission fundamentals. Fusion combines light hydrogen atoms (like the Sun), producing clean energy from water with no long-lived radioactive waste. Fission splits heavy uranium atoms, creating radioactive waste. Fusion is inherently safe — if something goes wrong, the reactor simply stops.

Unlike traditional tokamak donut-shaped chambers, Helion uses pulsed magnetoinertial fusion. Kirtley explains the technical advantages: faster cycling, direct energy conversion, and potentially lower cost. Helion has made incredible progress in a short time.

At fusion temperatures, the concept of 'hot' becomes about velocity — particles moving at ~1 million mph or 100 km/s. Temperature becomes a measurement of particle velocity. This fundamentally changes how you think about containment and control.

Fusion happens in microseconds — a flash and it's over. Modern gigahertz computing enables a thousand operations per microsecond, allowing programmable logic to control fusion sequences. Kirtley describes the software stack: Fortran, Python, Java, and assembly for FPGAs.

Kirtley discusses the engineering challenges and timeline for commercial fusion. Helion's approach could achieve net energy gain sooner than traditional methods. If achieved, fusion would solve most energy needs cleanly, fundamentally changing what's possible for civilization.