Compact proton therapy system with energy selection onboard a rotatable gantry

A heavy particle radiation therapy system suitable for providing radiation particle beams for a single treatment station comprising:

• a particle accelerator configured to provide a particle beam;
• a beam line assembly coupled to said particle accelerator and operable to directing said particle beam to a swiveling gantry assembly;
• an energy degrader operable to attenuate an energy of said particle beam and exposed to an ambient pressure;
• and
• said swiveling gantry assembly coupled to said beam line assembly and comprising:
• a set of dipole magnets with controllable magnetic field, said set of dipole magnets operable to select a portion of said particle beam with a predetermined energy, and redirect said portion of said particle beam to a second direction;
• and
• a beam collimator.

A proton radiation therapy system configured to provide proton beam radiation to a single treatment station, said proton radiation therapy system comprises:

• a cyclotron coupled to a proton source;
• a beam line assembly coupled to said cyclotron and operable to direct said particle beam to a swiveling gantry assembly;
• an energy degrader operable to attenuate an energy of a proton beam;
• said swiveling gantry assembly coupled to said beam line assembly and comprising:
• a set of dipole magnets, wherein said set of dipole magnets are operable to select a portion of said proton beam with a predetermined energy, and collectively redirect said portion of said particle beam by substantially 90°;
• and
• a beam collimator.