Radiation stability of semiconductor amplifiers in magnetic inductive current transformers of the linear electron accelerator (LUE-2000) beam

Radiation damage of semiconductor amplifiers used as preamplifiers in magnetic inductive devices for an accelerated particle beam measurement was investigated. Amplifiers were irradiated by accelerated electrons with 5 and 500 MeV energies and by radiation formed in result of 500 MeV electron scattering in accelerator constructions. The amplifier damage (change of amplification coefficient) was compared with the damage of silicon samples. Influence of radiation field ionization on the errors of beam current measurements was studied. The upper value of the absorbed dose at which measuring errors exceed the admissible level was defined. 5 refs.; 9 figs. (author)