Charged-particle beam accelerator, particle beam radiation therapy system using the charged-particle beam accelerator, and method of operating the particle beam radiation therapy system
US7122978B2 · kind B2 · utility
122Cited by
6References
15Claims
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Key dates
| Filing date | Apr 19, 2005 |
| Grant date | Oct 17, 2006 |
| Priority date | — |
| Expiry date | Apr 19, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05H7/10
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A charged-particle beam accelerator includes an RF-KO unit for increasing the amplitude of betatron oscillation of a charged-particle beam within a stable region of resonance and an extraction quadrupole electromagnet unit for varying the stable region of resonance. The RF-KO unit is operated within a frequency range in which the circulating beam does not go beyond a boundary of the stable region of resonance, and the extraction quadrupole electromagnet unit is operated with appropriate timing as required for beam extraction so that the charged-particle beam is extracted with desired timing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.