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Residual Gas Analysis

The world's largest nuclear fusion research facility of the stellerator type is located in Greifswald. Here, very strong magnetic fields and extreme temperatures are used to research the modeling of solar conditions for possible energy generation through nuclear fusion. Also using vacuum components from VACOM. VACOM has supplied the Max Planck Institute for Plasma Physics (IPP) with 13 neutral gas manometers that measure the neutral gas in the vicinity of the fusion plasma at a vacuum lower than 108 mbar (81.01Torr). This is important for the behavior of the plasma. The temporal evolution of the neutral hydrogen at selected locations in the plasma vessel of the Wendelstein 7-X project is recorded.

With a component length of 2.20 m (86.61 in), the challenges were great to perform a residual gas analysis and to maintain all tolerances. Extensive quality documentation was prepared for each component. The component built by VACOM supports the guidance of the relatively small sensor to the plasma and the retrieval of the measurement data. The very complex assembly consists of well over 100 components with different materials. Very sophisticated welds with complex welding procedure testing were required. The production was associated with special requirements in turning, milling and welding, as well as in technology, development, assembly and quality assurance.

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