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Transpector MPS Operating Manual
6.6 Calibration
6.6.1 Mass Alignment
Transpector MPS is tuned such that it generates a known RF/DC ratio that allows
one mass to exit the quadrupole at a time. When tuning the mass scale of
Transpector MPS, the RF/DC ratio is fine tuned to each tune mass.
6.6.1.1 Factory Tuning
In the factory, Transpector MPS is tuned to different masses depending on the
mass range of Transpector MPS. The factory tune masses and width standards are
displayed in
.
The gases that are used for factory tuning of these masses are:
Hydrogen (mass 1 and 2)
Helium (mass 4)
Nitrogen (mass 28)
Krypton (mass 86)
Xenon (mass 134)
Table 6-3 Factory tune settings
100 AMU
200 AMU
Mass
10% R
Mass
10% R
1
0.5 ±0.10
1
0.5 ±0.10
2
0.9 ±0.05
2
0.9 ±0.05
4
0.9 ±0.05
4
0.9 ±0.05
28
0.9 ±0.05
28
0.9 ±0.05
86
0.9 ±0.05
86
0.9 ±0.05
134
0.9 ±0.05
