FIELD: acceleration technique, in particular, in cyclic charged-particle accelerators. SUBSTANCE: the method of production of small- sized bremsstrahlung focus consists in acceleration of charged particles in a cyclic accelerator and displacement of charged particles onto target at a range rate providing for production of the maximum dose rate of bremsstrahlung. The size of target 5 is less than the section of the beam of accelerated particles 7, the target is installed on holder 4. The holder is made of metal with a low atomic number, and the target is made of metal with a high atomic number. EFFECT: facilitated procedure. 2 dwg, 1 tbl
