Patent ID: 11887831
Assignee: DH TECHNOLOGIES DEVELOPMENT PTE. LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 9:
10. A mass spectrometer, comprising:
at least one ion source for generating ions,
an ion guide for collisionally cooling said ions,
at least one mass analyzer positioned downstream of said ion guide for performing mass analysis on said collisionally cooled ions,
at least one lens element located between the ion guide and the mass analyzer,
at least one DC voltage source for applying a DC voltage to said lens element,
a controller in communication with said voltage source for ramping a DC voltage applied to said lens element,
a detector positioned downstream of said mass analyzer for detecting ions passing through said mass analyzer and generating mass detection signals as the DC voltage is ramped,
an analyzer in communication with said detector for receiving said mass detection signals from said detector and generating a mass ion signal, said analyzer being configured to extract one or more characteristics of any of said mass ion signal and said voltage ramp,
said analyzer being in communication with said controller to provide control signals thereto for adjusting a DC voltage applied to said lens element based on said one or more characteristics of the ion signal and the voltage ramp.