论文信息 - Commissioning of inline ECE system within waveguide based ECRH transmission systems on ASDEX upgrade

Commissioning of inline ECE system within waveguide based ECRH transmission systems on ASDEX upgrade

A CW capable inline electron cyclotron emission (ECE) separation system for feedback control, featuring oversized corrugated waveguides, is commissioned on ASDEX upgrade (AUG). The system is based on a combination of a polarization independent, non-resonant, Mach-Zehnder diplexer equipped with dielectric plate beam splitters [2, 3] employed as corrugated oversized waveguide filter, and a resonant Fast Directional Switch, FADIS [4, 5, 6, 7] as ECE/ECCD separation system. This paper presents an overview of the system, the low power characterisation tests and first high power commissioning on AUG. © Owned by the authors, published by EDP Sciences, 2012.

[1] E. Westerhof,et al. Strong scattering of high power millimeter waves in tokamak plasmas with tearing modes. , 2009, Physical review letters.

[2] M R de Baar,et al. A line-of-sight electron cyclotron emission receiver for electron cyclotron resonance heating feedback control of tearing modes. , 2008, The Review of scientific instruments.

[3] J. W. Oosterbeek,et al. Magnetic Island Localization for NTM Control by ECE Viewed Along the Same Optical Path of the ECCD Beam , 2009 .

[4] J. W. Oosterbeek,et al. Utilization of collinear ECE detection/ECRH heating for active stabilization of plasma instabilities , 2010, 35th International Conference on Infrared, Millimeter, and Terahertz Waves.

[5] W. Kasparek,et al. High-Power Performance of a Resonant Diplexer for Advanced ECRH , 2011 .

[6] M. Münich,et al. Bragg Reflection Band Stop Filter for ECE on Wega , 2011, 2011 International Conference on Infrared, Millimeter, and Terahertz Waves.

[7] G. Gantenbein,et al. Progress and First Results With the New Multifrequency ECRH System for ASDEX Upgrade , 2009, IEEE Transactions on Plasma Science.