Particle beam irradiation apparatus
US5818058A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 17, 1997 |
| Grant date | Oct 6, 1998 |
| Priority date | — |
| Expiry date | Jan 17, 2017 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61N2005/1087
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An acceleration orbit face of particle beam circular acceleration unit is placed at right angles to a rotation shaft of rotation unit for rotating the particle beam circular acceleration unit, beam transport unit, and irradiation field formation unit in one piece. Shields for shielding radiations and magnetism are placed symmetrically with respect to the center axis of the particle beam circular acceleration unit. Shields are placed symmetrically with respect to the center line of the particle beam circular acceleration means, thereby lessening the amount of beams coming in collision with surrounding walls from the beam acceleration orbit, decreasing the radiation leakage amount, lightening the shields, and providing a light particle beam irradiation apparatus.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.