https://doi.org/10.1051/epjconf/201920304003
Studies towards an upgraded 1.5 MW gyrotron for W7-X
1
Karlsruhe Institute of Technology, 76131 Karlsruhe, Germany
2
Max Planck Institute for Plasma Physics, 85748 Garching, Germany
3
Max Planck Institute for Plasma Physics, 17491 Greifswald, Germany
4
Present affiliation: European Space Agency ESTEC, 2200 AG Noordwijk, The Netherlands
* Corresponding author: konstantinos.avramidis@kit.edu
Published online: 25 March 2019
Studies towards a 1.5 MW, 140 GHz CW gyrotron, with the capability of MW-class operation also at 175 GHz, are ongoing at Karlsruhe Institute of Technology in view of a possible future upgrade of the ECRH system of the stellarator W7-X. The upgrade of the existing 1.0 MW, 140 GHz European gyrotron for W7-X has been chosen as a development path. Detailed designs of the cavity, the non-linear uptaper, and the quasi-optical launcher for the upgraded gyrotron have been obtained and have been validated numerically. In parallel, a mode generator, intended for low-power tests of the quasi-optical mode converter system of the upgraded gyrotron, has been designed, manufactured, and successfully tested.
© The Authors, published by EDP Sciences, 2019
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