GAEL: A low-industance 2-ohm relativistic electron-beam generator

The aim of this paper is to describe the GAEL electron-beam generator. This machine is a 1.2-MV Marx generator connected to a 2-ohm water coaxial line (1). The addition of an intermediate storage line and a water switch reduces the diode current rise time from 50 ns to 8 ns without important additional losses in the energy transfer. In the first section, we describe the generator. Our theoretical model, including propagation in a coaxial line and discrete components, will be discussed in the second section. In the third section, the results will be presented.