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NEW FREQUENCY STEP-TUNABLE ECRH SYSTEM FOR ASDEX UPGRADE |
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| Authors: | D Wagner F Leuterer A Manini F Monaco M Münich F Ryter H Schütz H Zohm T Franke R Heidinger M Thumm W Kasparek G Gantenbein A G Litvak L G Popov V O Nichiporenko V E Myasnikov G G Denisov E M Tai E A Solyanova and S A Malygin |
| Institution: | (1) Max-Plank-Institut für Plasmaphysik EURATOM-IPP, Boltzmannstr. 2, D-85748 Garching, Germany;(2) Forschungszentrum Karlsruhe, Institut für Hochleistungsimpuls-und Mikrowellentechnik, D-76021 Karlsruhe, Germany;(3) Forschungszentrum Karlsruhe, Institut für Materialforschung, D-76021 Karlsruhe, Germany;(4) Institut für Plasmaforschung, Universit?t Stuttgart, D-70569 Stuttgart, Germany;(5) Institute of Applied Physics, 46 Ulyanov St., Nizhny Novgorod, 603950, Russia;(6) GYCOM Ltd, 46 Ulyanov St., Nizhny Novgorod, 603155, Russia |
| Abstract: | A new broadband ECRH (Electron Cyclotron Resonance Heating) system is currently under construction at the ASDEX Upgrade tokamak. This system will employ multi-frequency gyrotrons step-tunable in the range 105–140 GHz. In its final stage the system will consist of 4 gyrotrons with a total power of 4 MW and a pulse length of 10 s. It employs a fast steerable launcher for feedback controlled deposition that allows for poloidal steering of 10° within 100 ms. Transmission line elements, such as corrugated waveguides, polarizer mirrors and vacuum windows, are designed to cope for this frequency band. |
| Keywords: | Electron cyclotron resonance heating step-tunable gyrotron fast steerable launcher |
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