Changes in the edge plasma due to ELMs : A study using coupling measurements in the ICRF range
The sudden expulsion of energy and particles during an ELM provides an increased transient load in the divertor which complicates the power handling capabilities of future devices. From fast measurements of the resulting variation of the ICRF antenna resistance, conclusions can be drawn on the time evolution of those changes. This allows a refinement of the ELM models in fluid codes and indicates that, for ASDEX Upgrade and power of 1.6 MW through the separatrix, the time interval during which the ELM increases the transport at the separatrix is of the order of 1 ms.
Bibliographic Reference: Article: 21st EPS Conference on Controlled Fusion and Plasma Physics, Montpellier, 27 June - 1 July, 1994, Vol. 18B (1994) Part II, pp. 842-845
Record Number: 199510170 / Last updated on: 1995-02-07
Original language: en
Available languages: en