Energy interlock system for a linear accelerator

The energy interlock system is designed for a linear accelerator having no electron beam bending system. The accelerator emits electron pulses which are directed to a target for generation of x-ray pulses. The interlock system contains an ionization chamber, a discriminator and a switch. The ionization chamber is exposed to the x-ray pulses for measuring their intensity distribution. It comprises a control electrode and a plurality of electrode segments. The discriminator is connected for detecting energy inhomogeneities in the x-ray pulses. The switch is operated by the discriminator and connected to switch the accelerator on and off