Scanning magnet and particle therapy system
US11742105B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 30, 2020 |
| Grant date | Aug 29, 2023 |
| Priority date | — |
| Expiry date | Oct 19, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05H2277/11
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A scanning magnet that deflects a charged particle beam has a winding U provided with grooves SL1 and SL4 provided at facing positions. A passing direction of a conductive wire forming the winding U passes through the groove SL1 in a γ-axis positive direction, and passes through the groove SL4 in a γ-axis negative direction. The winding U has a loop path SL1-SL4 in which the groove SL1 is directed to the γ-axis positive direction, and the groove SL4 is directed to the γ-axis negative direction. When a current flows in the γ-axis positive direction in a winding section U+ disposed in the groove SL1, a current flows in the γ-axis negative direction in a winding section U− disposed in the groove SL4. A yoke, the winding U, a winding V, and a winding W have a 120° rotationally symmetric structure with respect to a central axis of the yoke.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.