Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
271883 | Fusion Engineering and Design | 2011 | 4 Pages |
Abstract
The electrodes for the Wendelstein 7-X glow discharge system have been designed, tested and manufactured. The compact design relies on a cooled housing, integrated into the first wall cooling system, and a calotte-shaped graphite anode. The new mounting concept avoids the need of active cooling of the anode due to an improved thermal conduction. Comprehensive tests of a prototype electrode had been carried out in laboratory and in the ASDEX Upgrade Tokamak during two operation campaigns. The electrode showed excellent and reliable long-time discharge behavior and fulfilled all the requirements regarding temperature limits and maintainability resulting from the steady-state operation of W7-X.
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Authors
A. Spring, A. Cardella, B. Brucker, B. Mendelevitch, H. Niedermeyer, O. Sellmeier, S. Schweizer, B. Streibl,