System for monitoring the position, intensity, uniformity and directivity of a beam of ionizing radiation
US3942012A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 21, 1974 |
| Grant date | Mar 2, 1976 |
| Priority date | — |
| Expiry date | Jan 21, 1994 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J47/06
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A monitoring device transparent to ionizing radiation, designed to measure the orientation, intensity and uniformity of an incident beam, comprises a cylindrical housing forming at least one ionization chamber with one or more ion-collecting electrodes transverse to the housing axis, each electrode being subdivided into a plurality of mutually insulated conductive elements connected to respective amplifiers. The elements of at least one electrode include one or more outer elements surrounding or bracketing one or more inner elements to measure the radiation in a central zone and a peripheral zone. The outputs of the respective amplifiers are additively and subtractively combined in an evaluation circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.