Fast raster scanning system for active dose fields formation

摘要

A fast system for raster scanning of a 250 MeV beam is described. The system provides the active formation of a dose field with dimensions up to 40 x 40 cm(sup 2) with a rate of 1000 lines and 10 shots per second. The principal feature of the system is that its construction is based on the key components - thyristors. This removes the limitations on the commutated power, gives a possibility to increase the frequency of the scanning and makes the system more reliable. 6 refs., 5 figs., 2 tabs. (Atomindex citation 26:077152)