Fusion Reactor

Lore & Background

The reactor's design is deceptively simple yet incredibly efficient, utilizing plasteel as a fuel source to sustain a controlled fusion reaction. This technology was once common in orbital habitats and deep-space colonies where solar power was unreliable or impossible. For modern colonists on the harsh surface of RimWorld, acquiring the materials to build one signals that they have moved beyond mere survival and are establishing a permanent, high-tech foothold capable of withstanding even the most extreme planetary conditions.

In Their Own Story

The hum was different than the wind turbines outside; it wasn't the rhythmic whir of blades fighting the gale, but a deep, resonant thrum that vibrated through the floor plates. Elara watched the blue glow inside the reactor's containment field pulse in time with the colony's power grid. As the storm raged overhead, blotting out the sun and grounding every solar array on the roof, the lights inside the medbay flickered once, then stabilized instantly. The fusion core didn't care about the clouds or the night; it simply burned plasteel into pure energy, keeping the life-support systems running while the world outside froze.

Reader's Guide

Constructing a Fusion Reactor requires access to Plasteel and Steel, materials typically unavailable until mid-to-late game. It demands a skilled constructor with high crafting stats to build efficiently without wasting resources. Strategically, this reactor is superior for colonies located in biomes with frequent storms or long nights where solar power fluctuates wildly. Its constant 10 kW output ensures that critical systems like heaters, air conditioners, and turrets never suffer from power dips. Optimization involves placing the reactor near high-consumption buildings to reduce cable length and heat loss. However, players must account for the significant ambient heat generated by the unit; in hot biomes or poorly ventilated rooms, this can raise temperatures enough to cause discomfort or even fire hazards if not managed with air conditioners.

Did You Know?

• The polywell design uses a set of electromagnets arranged in a polyhedron, most commonly a six-sided cube, to generate a magnetic field that traps electrons.
• In a polywell, electrons act as a virtual cathode, creating a negative voltage that attracts positive ions and accelerates them to fusion conditions.
• The magnetic field vanishes at the center of the polywell by symmetry, creating a null point where electrons travel straight through.
• In February 2013, Lockheed Martin Skunk Works announced a new compact fusion machine, the high beta fusion reactor, that may be related to the biconic cusp and the polywell.
• According to Bussard, an electron makes 5 to 8 passes before escaping through a cusp in standard mirror confinement, but several thousand passes in Wiffle-Ball confinement (high beta).