FIELD: medical equipment; can be used for electronic irradiation. SUBSTANCE: the unit has a betatron,, primary electron scatterer in the form of a wall of acceleration chamber, secondary scatterer in the form of a strip of foil positioned along the plane of betatron acceleration. The foil width is less than the width calculated proceeding from proportionality of the strip width and dimension of the dose field formed by the betatron in the direction perpendicular to the plane of acceleration, distances to the primary scatterer. The secondary scatterer can be made in the form of a set of foil strips. The average width of strips for a high acceleration energy range is less than the average width of strips for a low energy range. EFFECT: improved design. 8 dwg
