End cap voltage control of ion traps
An ion trap and end cap electrode technology is applied in the field of ion trap and ion trap mass spectrometer, which can solve the problems of increasing the size, weight, and power consumption of the mass spectrometer system.
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[0024] Embodiments herein provide electrical actuation for the end caps of an ion trap to improve ion trap operation. Embodiments provide simple circuitry that derives the electrical excitation signal from the signal present on the central electrode of the ion trap.
[0025] In one embodiment, passive electrical components are used to apply a signal to the second end cap of the ion trap to enhance performance. An added component is used to apply a portion of the central electrode excitation signal to the second end cap. This results in axial excitation within the ion trap, which improves performance with negligible power loss, minimal complexity, and with minimal impact on system size. In some embodiments, the added components may result in an increase in the impedance seen at the central electrode due to the circuit configuration of the added components, which results in a substantial reduction in overall system power consumption.
[0026] In an embodiment, the frequency of...
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