Method and apparatus for beam energy measurement
US11052266B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 15, 2019 |
| Grant date | Jul 6, 2021 |
| Priority date | — |
| Expiry date | Mar 7, 2039 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61N5/1071
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Apparatus for measuring radiation beam energy output from a radiation beam source, comprising a first beam energy sensor at a first distance from the radiation beam source along the radiation beam axis; a second beam energy sensor located at a second distance from the radiation beam source along the radiation beam axis; and an energy absorbing layer, for example a layer that removes a part of the low energy content of the beam or a layer that absorbs at least 1% of the beam energy, located between the first and second sensors, and positioned such that radiation passing through the first sensor also passes through the energy absorbing layer before entering the second sensor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.