Device for adapting the size of an ion beam spot in tumor irradiation.

摘要

Device for adapting a spot size of ion beam, which has the following characteristics: - installation of reticular scanner consists magnets raster scanning (20) for raster scanning the ion beam (19), - quadrupole magnets (10), which determine the spot size of the ion beam, which are arranged immediately in front of the magnets of raster scanning (20), - two devices of the magnet power supply (18) for the quadrupole doublet of the quadrupole magnets (10) which determine the spot size of the ion beam, characterized in that the apparatus has - a control loop (21) for conditioning correction value current comparing theoretical values ​​and actual values ​​of a current dilatation ray apparatuses for two magnet power supply (18) of the quadrupole doublet of the quadrupole magnets (10) that determine the size of beam ions for homogenization defined and / or for defined variation of the spot size of the ion beam during beam extraction and / or of a measuring cycle to another and / or a beam position to another, and - the device comprises a control module and reading (SAMD) that controls and reads a denser lattice position the ion beam with a size while smaller spot ion beam in the edge region (3) that in the volume (4) of a tumor.