Parallax free and spark protected X-ray detector
US7639783B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 2, 2008 |
| Grant date | Dec 29, 2009 |
| Priority date | — |
| Expiry date | Jun 2, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01T1/185
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An X-ray detector is formed with a geometry in the form of a spherical polygon, including an entrance window, a grid and an anode. The spherical polygonal entrance window and the grid form a spherical polygonal drift region between them. The electric field in this region is radial and eliminates parallax broadening. A spherical polygonal amplification region between a resistive anode on an insulating support and the grid allows very high gas amplification and good protection against spark discharges. A readout electrode on the back side of the anode insulator detects induced charges and protects the readout electronics against sparks.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.