Beam defining system in an electron accelerator
US4140129A · kind A · utility
26Cited by
4References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 13, 1977 |
| Grant date | Feb 20, 1979 |
| Priority date | — |
| Expiry date | Apr 13, 1997 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61N2005/1089
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A beam defining system for an electron accelerator has an adjustable collimator with an accessory holder attached thereto for retaining an electron applicator. The electron applicator has an applicator wall which encloses an electron beam cone from the collimator. A frame-shaped spacer which can be brought into contact with the patient is attached to the applicator wall. A frame-shaped limiting aperture additional to limiting members in the collimator are provided on the applicator wall in order to limit the electron-beam cone at marginal regions facing away from the beam defining system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.