Apparatus and method for electronically driving a quadrupole mass spectrometer to improve signal performance at fast scan rates
US7078686B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 16, 2004 |
| Grant date | Jul 18, 2006 |
| Priority date | — |
| Expiry date | Mar 16, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J49/022
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An apparatus for electronically controlling a quadrupole in a mass spectrometer, comprises radio frequency (RF) drive circuitry and direct current (DC) drive circuitry coupled to a quadrupole, an RF control loop associated with the RF drive circuitry, a DC control loop associated with the DC drive circuitry, and control loop circuitry associated with the DC control loop, the control loop circuitry configured to alter a response of the DC control loop during a settling time period of a step response such that ion transmission through the quadrupole is greater during the settling time than if the response of the DC control loop during the settling time is unaltered.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.