One of the key component for a Laser Inertial Fusion Energy (LIFE) engine is the fusion chamber subsystem. There are different structure of chambers such as dry-wall, wetted-wall, thick-liquid wall, or solid/voids.
The chamber contain material absorb the thermal fusion energy, produce fusion fuel to replace that burned in previous targets, and enable both target and laser beam transport to the ignition point. The chamber system also must mitigate target emissions, including ions, X-rays and neutrons and reset itself to enable operation at 10–15 Hz. Finally, the chamber must offer a high level of availability, which implies both a reasonable lifetime and the ability to rapidly replace damaged components.