A high voltage electron injector gun for synchrotrons

An improved demountable electron injector gun designed primarily for use in 140 and 30 MeV synchrotrons is described. The maximum energy of injection is 100 keV: facilities for the exploration of synchrotron injection parameters are provided by micrometer control of both the radius and the injection angle of the beam. Both the cathode assembly and the anode are easily detachable for replacement and experimental purposes. Details of the gun design, its electrical characteristics, and the test apparatus are given.