Modification of the X-ray diagnostics of electron energy distributions in gyrotrons

Scattered x-rays were utilized for determination of the electron energy distributions at a gyrotron collector. Performed calculations and experiments demonstrated that scattering in the diagnostic window has only minor effect on the radiation spectra in the gyrotron-relevant conditions. The primary advantage of the proposed diagnostic scheme consists in reduction of the density of treated x-rays flux down to the optimal level for spectrometers of the energy-dispersive type. The experimental configuration for full-beam-averaged data acquisition has been practically tested. A modification of the setup is discussed aimed to obtain information with an optimal spatial resolution.