Beam guidance magnet for the deflection of one beam of electrically charged particles along a curved particle track with additional coils p, p and an irradiation plant with compensation coils and such a magnet

摘要

The beam guidance magnet (200) comprises a coil system with along a particle track extended individual coils, in pairs in each instance, mirror-inverted relative to a beam guiding plane are arranged. The coil system comprises at least two main coils (201) with bent-up end portions (205, 206) and between the main coils (20) arranged flat in addition to coils (207). The end parts of the main coils are, with respect to the beam guidance plane in such a way by more than 90° bent open, that the end portions (205, 206) in the field region of the respective arcuate end portion (205, 206) of the associated secondary coil (207) extend. Furthermore, the beam guidance magnet (200) additional coils p, p (501), which in the field region of the respective arcuate end portions (205, 206) which, in addition to coils (207) are arranged. As an alternative, the beam guidance magnet (200) compensation coils (503), on both sides of the elongated patient room are (502) are arranged.