Breakdown in a continuous low resistivity vessel in TCV
The TCV vacuum vessel is continuously welded and has a low toroidal resistance for passive stabilization of the plasma vertical motion. Consequently large vessel currents, up to 200 kA, are induced by the loop voltage during breakdown. They create a vertical magnetic field of the order of 10 to 20 mT that must be carefully compensated to achieve discharge breakdown. This compensation as well as the creation of a poloidal field quadrupole rely on accurate magnetic measurements and a precise model of the electromagnetic properties of the vacuum vessel.
Bibliographic Reference: Article: Proceedings of the 23rd European Physical Society Conference on Controlled Fusion and Plasma Physics, Kiev (UA), June 24-28, 1996, pp. 123-126
Record Number: 199710345 / Last updated on: 1997-04-14
Original language: en
Available languages: en