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To control different types of magnetohydrodynamic (MHD) instabilities in ITER, various amplitude modulation scenarios for the gyrotrons of the Electron Cyclotron (EC) system are required. This work focuses on the impact of different modulation scenarios on the power loading on the collector wall of a 2 MW gyrotron, which has been originally proposed as the EU gyrotron for ITER. In addition, first...
In ITER it is foreseen to control different types of MHD instabilities by means of modulated Electron Cyclotron Current Drive (ECCD) with modulation frequencies up to 5 kHz. This has direct consequences for the EC system of ITER, since both the gyrotons and power supplies have to be capable of modulated operation. Since the electron gun of the 2 MW EU gyrotron is a diode type gun and the gyrotron...
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