| Issue |
EPJ Web Conf.
Volume 313, 2024
22nd Joint Workshop on Electron Cyclotron Emission and Electron Cyclotron Resonance Heating (EC22)
|
|
|---|---|---|
| Article Number | 04008 | |
| Number of page(s) | 6 | |
| Section | Technology | |
| DOI | https://doi.org/10.1051/epjconf/202431304008 | |
| Published online | 15 November 2024 | |
https://doi.org/10.1051/epjconf/202431304008
Experimental characterization of the TCV dual-frequency gyrotron and validation of numerical codes including the effect of After Cavity Interaction
1 Ecole Polytechnique Fédérale de Lausanne (EPFL), Swiss Plasma Center (SPC), Lausanne, CH-1015 Switzerland.
2 Department of Physics, NKUA, Athens, Greece
3 Istituto per la Scienza e la Tecnologia dei Plasmi (ISTP), Consiglio nazionale delle Riccerche, Milan, Italy
4 IHM, Karlsruhe Institute of Technology, 76131 Karlsruhe, Germany.
5 Microwave Imaging Solution, THALES, Vélizy-Villacoublay, F-78141, France.
6 Department of Chemistry and Applied Biosciences, Eidgenössisch Technische Hochschule Zürich, Switzerland
* e-mail: jeremy.genoud@epfl.ch
Published online: 15 November 2024
A dual-frequency gyrotron has been developed within the context of the recent Tokamak à Configuration Variable (TCV) upgrade. The gyrotron is designed to generate a 1 MW, 2 seconds RF wave at 84 or 126 GHz. Before integrating the gyrotrons in the TCV tokamak ECRH system, an extensive characterization of their behaviour has been performed. This paper focuses on presenting the results of these experiments at the two operating frequencies. The power measurements are systematically compared with numerical simulations. This comparison highlights the validation of numerical codes and the effect of After Cavity Interaction (ACI), a crucial factor that must be considered for achieving a good agreement between theoretical predictions and experimental results.
© The Authors, published by EDP Sciences, 2024
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