1St Detect Corporation

David Lorenz Gardner

David Rafferty

James Wylde

Michael Spencer

Warren Mino

A mass spectrometer comprising a controller configured to generate an RF signal to be applied to an electrode during the mass scan, wherein the electrode generates, based on the RF signal, an electric field to be applied to sample ions during a mass scan; an ion detector configured to detect sample ions passing through the electric field and generate a corresponding ion detection signal; and a sampling circuit configured to sample the ion detection signal; wherein the controller is configured to adjust a phase of the at least one RF signal relative to a sample timing of the sampling circuit and average successive mass scans to cancel a portion of the RF signal present in the ion detection signal.

Mass spectrum noise cancellation by alternating inverted synchronous RF

A method and apparatus for performing mass spectrometry using an electron source, an ion trap, and a voltage-controlled lens located between the electron source and the ion trap. A controller applies a voltage to the lens. Features of the resulting output spectrum can be analyzed to determine whether to adjust the lens voltage.

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League City, TX, United States of America

David Lorenz Gardner