Short for QUARK Accelerator. A device that extracts and accelerates quarks into a target, for energy generation purposes. It's advantage is that it can split the nuclei of the atoms of ANY element, and not just Uranium or Plutonium as Neutrons would. This causes a fission type chain reaction from which energy is extracted. QUELLS were used in land (Planet) based power plants to produce energy cheaply. But they were highly unstable. Sometimes, if the particles escaped confinement, the Quell would consume ITSELF with catastrophic results---It could take a small planet with it. The technology was eventually banned in favor of anti-matter systems. The quells were shipped off and dismantled. Ashley Bainbridge modified a functional Quell into a weapon and installed it on Leslie Webber's Ship.