Patent ID: 7812319

Claim:
A beam guiding magnet for deflecting a particle beam along a curved particle path, which defines a beam guidance plane, toward an isocenter, the beam guiding magnet comprising: a first coil system having curved individual coils, disposed along the particle path, which are arranged in pairs in mirror symmetry to the beam guidance plane, the first coil system including two saddle-shaped first primary coils with side parts elongated in a direction of the particle path and end parts bent upward on a face end, at least two secondary coils, which are curved and surround an inner region, and at least two correction coils, which are curved and are located in the respective inner region of the secondary coils, and a second coil system having two second primary coils, which extend laterally of the particle path and are curved and which are located between the first primary coils and include a first and a second elongated side part, the first elongated side part is located close to the particle path and the second elongated side part is remote from the particle path, wherein the first and second coil systems are operable to generate dipole moments that point in opposite directions.