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VA: Fachverband Vakuumphysik und Vakuumtechnik

VA 1: Future Requirements on Vacuum Pumps and Vacuum Gauges

VA 1.2: Vortrag

Montag, 11. März 2013, 10:40–11:00, H6

A metal foil vacuum pump for the fuel cycle of fusion power plants — •Thomas Giegerich and Christian Day — Karlsruher Institut für Technologie (KIT), Institut für Technische Physik (ITEP), Eggenstein-Leopoldshafen, D-76344, GERMANY

At KIT Karlsruhe, a new vacuum pump based on the physical principle of superpermeation is under development. This metal foil pump shall be used in the fuel cycle of a fusion reactors and forms the central part of the Direct Internal Recycling concept (DIR), a shortcut between the machine exhaust pumping and the fuelling systems.

This vacuum pump simplifies the fusion fuel cycle dramatically and provides two major functions simultaneously: A separating and pumping function. It separates a hydrogen isotopes and impurities containing gas flow sharply into a pure H-isotopes flow that is also being compressed. The remaining impurity enriched gas flow passes the pump without being pumped.

For superpermeability, a source of molecular hydrogen is needed. This can be achieved by different methods inside of the pump. Most important are plasma based or hot rod (atomizer) based methods.

In this talk, the physical working principle and the modeling of this pump is presented and the development towards a technical separator pumping module is shown up.