Localized heat flux due to lower hybrid wave coupling in th ergodic divertor configuration on Tore Supra
Lower hybrid current drive experiments were carried out in the ergodic divertor configuration. In this configuration at low density, up to 4.5MW of LH power was coupled and 65% of the plasma current was driven by the LH waves. With an optimized position of the grills, it was possible to obtain a reasonable steady state temperature of the neutralizers and 3.9MW were coupled fro 20s leading to a record total injected enrgy of 93MJ in this configuration. The power deposition can be derived from the surface temperature of the boron carbide coating of the neutralizers by infrared thermography. A well localized heat flux is observed on the divertor neutralizers magnetically connected to the grills. Such heat flux is known, from previous work, to be due to LH power dissipation near the grills. This heat flux is here studied in detail.
Bibliographic Reference: Article: Journal of Nuclear Materials, 266-269 (1999), 280-284
Record Number: 199910754 / Last updated on: 1999-05-21
Original language: en
Available languages: en