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DOE OSTI · 21612521

Electron Cyclotron / Bernstein Wave Heating and Current Drive Experiments using Phased-array Antenna in QUEST

Idei, H·Zushi, H·Hanada, K·Nakamura, K·Fujisawa, A·Hasegawa, M·Yoshida, N·Watanebe, H·Tokunaga, K·Nagashima, Y·Kawasaki, S·Nakashima, H·Higashijima, A·Sakamoto, M·Ejiri, A·Takase, Y·Sakaguchi, M·Kalinnikova, E·Ishiguro, M·Tashima, S
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Abstract

The phased-array antenna system for Electron Cyclotron/Bernstein Wave Heating and Current Drive experiments has been developed in the QUEST. The antenna was designed to excite a pure O-mode wave in the oblique injection for the O-X-B mode conversion experiments, and its good performances were confirmed at a low power level. The plasma current (<{approx}15 kA) with an aspect ratio of 1.5 was started up and sustained by only RF injection in the low-density operations. The long pulse discharge of 10 kA was also attained for 37 s. The new density window to sustain the plasma current was observed in the high-density plasmas. The single-null divertor configuration with the high plasma current (<{approx}25 kA) was attained in the 17 s plasma sustainment.

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70 PLASMA PHYSICS AND FUSION TECHNOLOGYANTENNASASPECT RATIOBERNSTEIN MODECLOSED PLASMA DEVICESCURRENT-DRIVE HEATINGCURRENTSDIMENSIONLESS NUMBERSDIVERTORSECR HEATINGELECTRIC CURRENTSELECTRIC HEATINGELECTRICAL EQUIPMENTELECTRONSELEMENTARY PARTICLESEQUIPMENTFERMIONSHEATINGHIGH-FREQUENCY HEATINGJOULE HEATINGLEPTONSMODE CONVERSIONOSCILLATION MODESPERFORMANCEPLASMAPLASMA DENSITYPLASMA HEATINGPLASMA WAVESSTART-UPSTEADY-STATE CONDITIONSTHERMONUCLEAR DEVICESTOKAMAK DEVICESWAVE PROPAGATION

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Idei, H, Zushi, H, Hanada, K, Nakamura, K, Fujisawa, A, Hasegawa, M, Yoshida, N, Watanebe, H, Tokunaga, K, Nagashima, Y, Kawasaki, S, Nakashima, H, Higashijima, A, Sakamoto, M, Ejiri, A, Takase, Y, Sakaguchi, M, Kalinnikova, E, Ishiguro, M, Tashima, S. 2011-12-23. Electron Cyclotron / Bernstein Wave Heating and Current Drive Experiments using Phased-array Antenna in QUEST. https://doi.org/10.1063/1.3665017

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