High energy electron crystal spectrometer

A spectrometer has been developed to measure relativistic electrons produced in di®erent types of plasmas, like: tokamak plasmas, laser produced plasmas. The spectrometer consists of 9 YSO (Y2SiO5 : Ce) crystals, which are shielded by stainless steel ¯lters. The absolute calibration of the spectrometer was performed at the superconducting electron linear accelerator ELBE. The spectrometer can provide information about energy distribution of electrons and their numbers for the energy range between 4 and 30 MeV. The spectrum is analyzed by means of the Monte Carlo 3D Geant4 code.