53 results about "Radio-frequency quadrupole" patented technology

The invention relates to a method and apparatus for control of a charged particle cancer therapy system. A treatment delivery control system is used to directly control multiple subsystems of the cancer therapy system without direct communication between selected subsystems, which enhances safety, simplifies quality assurance and quality control, and facilitates programming. For example, the treatment delivery control system directly controls one or more of: an imaging system, a positioning system, an injection system, a radio-frequency quadrupole system, a ring accelerator or synchrotron, an extraction system, a beam line, an irradiation nozzle, a gantry, a display system, a targeting system, and a verification system. Generally, the control system integrates subsystems and / or integrates output of one or more of the above described cancer therapy system elements with inputs of one or more of the above described cancer therapy system elements.

The invention provides a method for accelerating protons and carbon ions up to 450 MeV / u in a very compact linac, the method comprising subjecting the particles to a radio frequency quadrupole field to accelerate the particles to at least 3 MeV / u, a drift tube linac (DTL) to an energy of 20 MeV / u, followed by a coupled DTL to 45 MeV / u and finally a high-gradient section made of CCL-type standing wave cavities or negative harmonic traveling wave cavities operating at S-band frequencies and capable of delivering voltage gradients of 40 to 60 MV / m. Focusing the accelerated particles while accelerated to higher energy is provided by appropriately placed constant field permanent magnets and electromagnetic quadrupoles. The compactness and power efficiency of the linac is enabled by using high-gradient structure in the S-band frequencies for lower energy particles than ever before. The low-intensity required for hadron therapy allows the use of small-aperture S-band structures and the operation at very high gradient compared to high-intensity machines for research. Operating with very short sub-microsecond pulses at repetition rates up to 400 Hz allows the fast and flexible beam energy and intensity tuning not provided by existing hadron therapy machines. The designed linac is capable of accelerating ions as heavy as neon to the full 450 MeV / u energy, therefore allowing fast beam switching if different ion sources are installed in the front-end of the linac.

The invention relates to a method and apparatus for control of a charged particle cancer therapy system. A treatment delivery control system is used to directly control multiple subsystems of the cancer therapy system without direct communication between selected subsystems, which enhances safety, simplifies quality assurance and quality control, and facilitates programming. For example, the treatment delivery control system directly controls one or more of: an imaging system, a positioning system, an injection system, a radio-frequency quadrupole system, a ring accelerator or synchrotron, an extraction system, a beam line, an irradiation nozzle, a gantry, a display system, a targeting system, and a verification system. Generally, the control system integrates subsystems and / or integrates output of one or more of the above described cancer therapy system elements with inputs of one or more of the above described cancer therapy system elements.

The invention relates to the technical field of manufacturing technology of core components of a four-wing radio frequency quadrupole field cavity of a linear accelerator, in particular to a high-precision single-wing manufacturing method of a four-wing radio frequency quadrupole field cavity. Use a deep hole drilling machine to drill a water-cooling hole at the bottom of the wing; use tooling for semi-finishing, use an end mill to finish the inner cavity surface of the wing on a vertical machining center, and use a lever type on a horizontal machining center Align the single wing with the dial indicator; use the semi-finishing special forming tool to process the pole head surface of the single wing, and then use the semi-finishing tool to roughly machine the surface of the pole head; use the special tool for finishing machining to process the modulation line of the single-wing pole head, using three coordinates The measuring instrument detects the processing accuracy of the modulation line of the single wing; finally, the surface of all the single wings is pickled. The monoplane produced by this process has high precision and high surface finish. The field frequency measured online after assembly is stable, the field flatness is good, and the field symmetry is good, which is very consistent with the theoretical value.