Apparatus and method for hadron beam verification
US9192787B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 24, 2013 |
| Grant date | Nov 24, 2015 |
| Priority date | — |
| Expiry date | Apr 24, 2033 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61N2005/1087
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The present invention is related to an apparatus and method for hadron beam verification. The apparatus allows to verify a number of different characteristics in a brief time span. The apparatus comprises at least one main degrader element and associated therewith a multiple thickness degrader element. The latter may comprise a number of patches of beam degrading material, the patches having constant but mutually different thicknesses. Alternatively, it may be a wedge-shaped element. By aiming a pencil beam at the various thicknesses, data points can be obtained which allow to make an estimation of the beam range. In addition to this, the apparatus comprises a zone where no degrader material is present, and where a measurement of the spot size can be obtained, without moving or replacing the apparatus.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.