Circuit for processing a signal received by an electron multiplier
US5115667A · kind A · utility
5Cited by
2References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 11, 1990 |
| Grant date | May 26, 1992 |
| Priority date | — |
| Expiry date | Jun 11, 2010 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J43/30
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present invention relates to a circuit for processing a signal received by an electron multiplier. The circuit comprises an electron multiplier followed by an electron collector, a power supply for the electron multiplier, a gain-compressing amplifier for processing the signal delivered by the electron collector, and a feedback path for continuously modulating the gain of the electron multiplier by means of a control circuit which acts on the HT power supply of the electron multiplier. This circuit is particularly suitable for use in mass spectrometry and in helium leak detection.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.