Thermo Scientific TSQ Series Hardware Manual page 43

Figure 18. Skimmer of the TSQ Quantum Access and TSQ Quantum Ultra
Front
Figure 19. Exit lens of the TSQ Vantage
Front
The Q00 RF lens is a square array of thin metal elements that act as an ion focusing device.
See Figure
focuses the ions along the axis of the lens. A dc voltage offset from ground applied to Q00
(called the Q00 offset voltage) increases the translational kinetic energy of ions emerging from the
skimmer. During ion focusing, the offset voltage is negative for positive ions and positive for
negative ions. Increasing the offset voltage increases the translational kinetic energy of the ions.
Typical values of the Q00 offset voltage are 0 and ±4 V (negative for positive ions and positive for
negative ions).
Figure 20. Q00 RF lens
Front
Source CID can also be accomplished by increasing the DC voltage offset between the skimmer,
which is at ground potential, and the rest of the mass spectrometer beginning with Q00. You use
the Source CID parameter in the Tune Master software to adjust this potential.
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20. An RF voltage that is applied to the elements gives rise to an electric field that
2
Functional Description
Mass Spectrometer
TSQ Series Hardware Manual 25