Compact high gradient ion accelerating structure
AssigneeRadiaBeam Technologies, LLC
InventorsSergey Kutsaev, Ronald Agustsson, Alexander Smirnov
Life of this patent
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Abstract
A high gradient linear accelerating structure can propagate high frequency waves at a negative harmonic to accelerate low-energy ions. The linear accelerating structure can provide a gradient of 50 MV/m for particles at a β of between 0.3 and 0.4. The high gradient structure can be a part of a linear accelerator configured to provide an energy range from an ion source to 450 MeV/u for 12C6+ and 250 MeV for protons. The linear accelerator can include one or more of the following sections: a radiofrequency quadrupole (RFQ) accelerator operating at the sub-harmonic of the S-band frequency, a high gradient structure for the energy range from ˜45 MeV/u to ˜450 MeV/u.
Claims16
A high-gradient accelerating structure configured to accelerate particles, the high gradient accelerating structure comprising:
- a plurality of accelerating cells, each of the plurality of accelerating cells comprising an iris, the iris of each of the plurality of accelerating cells comprising:
- an aperture coaxial with a beam axis configured to allow a beam of particles to pass therethrough;
- and
- a nose having a maximum thickness greater than an iris thickness;
- wherein the high gradient accelerating structure is configured to receive the beam of particles along the beam axis at a beam velocity and to propagate electromagnetic waves at a negative first harmonic synchronous with the beam of particles.
A high-gradient accelerating structure configured to accelerate particles, the high gradient accelerating structure comprising:
- a plurality of high gradient tanks arranged along a beam axis comprising a negative harmonic structure (NHS) tank, the NHS tank comprising:
- a plurality of accelerating cells, each of the plurality of accelerating cells comprising an iris, the iris of each of the plurality of accelerating cells comprising:
- an aperture coaxial with the beam axis;
- and
- a nose disposed radially about the aperture, the nose having a maximum thickness greater than an iris thickness;
- wherein the high gradient accelerating structure is configured to propagate electromagnetic waves at a negative harmonic synchronous with particles having a beam velocity greater than 0.3 times the speed of light.
Dependencies are inferred from the claim text.