Physical Plant Wiring
The termination map: every layer of the stack ends at a named subsystem — magnets, feedthroughs, vessel, divertor, fuel cycle, and the DEC train.
No layer floats free
The discipline of an AI-native plant is that the software stack is wired to steel at defined points. Physical plant wiring is the map of those terminations — where sensing enters, where actuation leaves, and where protection is anchored. It is what lets any decision be traced to the hardware it moves.
The termination points
- Sensing enters at cryo-rated vacuum feedthroughs carrying 60+ analog channels into L2.
- Actuation leaves L1 to shaping and stability coils, gas and pellet injectors, and heating.
- Protection anchors at the REBCO magnets — the autonomous quench dump and deterministic interlocks.
- Structural health monitoring reads the CrMoNbV vessel and carbon-fiber cocoon.
- The fuel cycle terminates real-time isotope balancing into L2 and L7.
The cryogenic feedthrough boundary
The most demanding wiring is the crossing from a cryogenic, high-vacuum, high-field interior to room-temperature electronics. Signals from REBCO strain gauges, Mirnov coils, and the other diagnostics pass through feedthroughs that must preserve sub-microsecond timing and signal integrity across that boundary. L2 owns the fidelity of every crossing.
Actuation and preload
On the actuation side, the wiring includes the cryogenic ice-piston preload cycle that mechanically conditions the high-field magnets. Preload is coordinated across the plant interface and is safety-relevant, because magnet mechanical state and quench risk are linked.
Each subsystem has a dedicated page: magnets, fuel cycle, and DEC train. The sensing side is the diagnostics constellation.