Photomultiplier tube with an avalanche photodiode, a flat input end and conductors which simulate the potential distribution in a photomultiplier tube having a spherical-type input end
US5493176A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 23, 1994 |
| Grant date | Feb 20, 1996 |
| Priority date | — |
| Expiry date | May 23, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J43/28
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A photomultiplier uses an avalanche photodiode as a position-sensitive anode. The envelope of the photomultiplier has a flat input end. Electrically conductive regions mounted to the input end are configured to produce at the input end a potential distribution characteristic of a photomultiplier with a spherical-type input end as measured in a transverse plane immediately adjacent the spherical-type input end. A photocathode is located inside the photomultiplier and is electrically connected to the electrically conductivew regions. Advantageously, the envelope has flat sides and a square cross-section; in this instance, conductors are run along the sides to produce within the envelope a potential distribution characteristic of a photomultiplier which is cylindrical in cross-section, as measured at flat surfaces having the same shape as the envelope.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.