Wall conditioning for Wendelstein 7-X by glow discharge

Spring, A.; Brakel, R.; Niedermeyer, H.

doi:10.1016/S0920-3796(03)00245-X

Item

ITEM ACTIONSEXPORT

Add to Basket

Local TagsRelease HistoryDetailsSummary

Released

Journal Article

Wall conditioning for Wendelstein 7-X by glow discharge

MPS-Authors

/persons/resource/persons110549

Spring, A.
W7-X: Construction, Max Planck Institute for Plasma Physics, Max Planck Society;

/persons/resource/persons108767

Brakel, R.
Experimental Plasma Physics 3 (E3), Max Planck Institute for Plasma Physics, Max Planck Society;

/persons/resource/persons110054

Niedermeyer, H.
W7-X: Construction, Max Planck Institute for Plasma Physics, Max Planck Society;

External Resource

No external resources are shared

Fulltext (restricted access)

There are currently no full texts shared for your IP range.

Fulltext (public)

There are no public fulltexts stored in PuRe

Supplementary Material (public)

There is no public supplementary material available

Citation

Spring, A., Brakel, R., & Niedermeyer, H. (2003). Wall conditioning for Wendelstein 7-X by glow discharge. Fusion Engineering and Design, 66-68, 371-375. doi:10.1016/S0920-3796(03)00245-X.

Cite as: https://hdl.handle.net/11858/00-001M-0000-0027-3F14-B

Abstract

The basic design of a reliable and robust glow discharge cleaning (GDC) system for Wendelstein 7-X is presented. Preliminary experiments at the DEMO cryostat, a full size prototype sector of W7-X, result in conclusions about the operating range, power consumption and discharge stability of a GDC in W7-X dimensions. Ten electrodes are planned to be integrated into the first wall of W7-X, thus avoiding complex manipulators. A spherical calotte anode made of graphite mounted in a shielding trough was found as the optimum electrode design assuring stable discharge operation without active cooling, even when exposed to steady state stellarator discharges.