MEASUREMENT OF CURRENT IN HIGH-CURRENT RELATIVISTIC ELECTRON-BEAM BY ITS BREMSSTRAHLUNG

The bremsstrahlung directional diagram of a high-current relativistic beam is determined experimentally. It is shown that if the angle theta between the direction of electron incidence on a collector surface and the gamma-quantum radiation direction is about 30-40-degrees, the beam current's oscillogram can be regained from the intensity of the bremsstrahlung signal. The technique was used to determine the beam current in a relativistic diffraction generator, in which the beam current is difficult to measure by the conventional methods (clamp-on ammeter (fluxmeter), shunt) due to plasma generation and the excitation of plasma currents.