Injector Electronics for Multi-Turn Operation of the University of Maryland Electron Ring

Progress is described toward the development of pulse generators required for injection and extraction of the University of Maryland Electron Ring (UMER). The geometry, described elsewhere, employs a fast ironless dipole at the junction of a Y-shaped section of the ring. The dipole as developed has an inductance of 600nH. The required +21 A long pulse generator for multi-turn operation is installed. The first prototype pulse generator, providing –42 A for deflection of the beam in the opposite sense, has been installed on the beam line and tested. Successful multiple beam laps have been observed.