New detector and data processing procedure to measure velocity angular distribution function of magnetized relativistic electrons

Based on the regularities of the electron absorption in the ring collectors a new method for reconstructing the angular distribution function of the magnetized electrons has been worked out. To realize it the angular spread detector with a cylindrical channel of a variable cross-section was developed and applied in an experiment with a high-current electron beam. The results of the measurements with this detector have demonstrated the possibility to achieve an angular spread of 0.1 rad level in microsecond high-current beams generated in a magnetically insulated diode with an explosive-emission cathode at a voltage of ∼1 MV.