Pelletron UK /ˈpɛl.ɪˌtɹɒn/US /ˈpɛl.ɪˌtɹɑn/ noun1 •A type of electrostatic particle accelerator that builds a charge of high voltage using a charging chain of short conductive tubes called pellets connected by links made of insulating material, as opposed to using a belt or rectifier stack.An extremely important advantage of using a Pelletron driven FEL as a power source is its ability to synchronize the radiation of all the cavities by operating all the FEL's in a single cavity. — 1987 formsPelletrons · pelletrons