Wiktionary
n. A kind of particle accelerator similar to the cyclotron, but in which the accelerating field is not applied through large D-shaped electrodes but through a linear accelerator structure.
Wikipedia
A microtron is a type of particle accelerator concept originating from the cyclotron in which the accelerating field is not applied through large D-shaped electrodes, but through a linear accelerator structure. The classic microtron was invented by Vladimir Veksler. The kinetic energy of the particles is increased by a constant amount per field change (one half or a whole revolution). Microtrons are designed to operate at constant field frequency and magnetic field in the ultrarelativistic limit. Thus they are especially suited for very light elementary particles, namely electrons.
In a microtron, due to the electrons' increasing momentum, the particle paths are different for each pass. The time needed for that is proportional to the pass number. The slow electrons need one electric field oscillation, the faster electrons an integer multiple of this oscillation.
Usage examples of "microtron".
Dad and I can see the Microtron probe over his shoulder, hovering in front of the Rift.
The Microtron probe is on the floor, two scientists kneeling beside it.
Carefully, I turn Microtron around so that light from the Rift shines onto his exposed circuits.
The lights are out, but Microtron illuminates my path with a helpful light beam from his chest.
I can hide with Microtron back on the stage, behind the scenery, until Ordaal has left.
The man has just noticed Microtron, and he takes a wary step back from him and jerks his rifle up to cover him.
It takes me some time to put together the jigsaw shapes in his peripheral vision, to recognize the mech that called itself Microtron, and, much to my surprise, Persephone.