LTQ Orbitrap XL Hardware Manual
LTQ Orbitrap XL Hardware Manual
LTQ Orbitrap XL Hardware Manual
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Linear Trap Turbopump<br />
Forevacuum Pumps<br />
Functional Description<br />
Vacuum System<br />
The <strong>Orbitrap</strong> itself is separated from the UHV chamber by differential<br />
apertures and is evacuated down to 10 -10 mbar by a 210 L/s turbopump<br />
(TMP 3, see Figure 1-17 on page 1-20). All turbopumps are equipped<br />
with TC 100 control units (manufacturer: Pfeiffer).<br />
A separate turbopump provides the high vacuum for the linear ion trap.<br />
It it is mounted to the bottom of the vacuum manifold of the linear ion<br />
trap. For more information, refer to the <strong>LTQ</strong> <strong>XL</strong> <strong>Hardware</strong> <strong>Manual</strong>.<br />
The rotary vane pumps from the linear trap serve as forepumps for the<br />
two smaller turbopumps (TMP 1 and TMP 2). The exhaust hose from<br />
the forepumps is led to the back of the instrument and connects them to<br />
the exhaust system in the laboratory. The forepumps are located on a<br />
small cart in the forepumps cabinet below the linear trap. See<br />
Figure 1-18.<br />
Oil mist filters<br />
Figure 1-18. Forepumps cabinet<br />
Forepumps<br />
To minimize the ingress of pump oil into the exhaust system, the outlets<br />
of the forepumps are fitted to oil mist filters. See page 3-6 on<br />
instructions about returning the collected oil to the forepumps.<br />
The forevacuum pumps (forepumps) of the linear trap are powered by<br />
the power panel of the linear ion trap.<br />
Thermo Fisher Scientific <strong>LTQ</strong> <strong>Orbitrap</strong> <strong>XL</strong> <strong>Hardware</strong> <strong>Manual</strong> 1-21
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