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Home / Store / Journals / Electronic Articles / Fusion Science and Technology / Volume 51 / Number 2T / Pages 213-216

High Power and High Efficiency Operation of 170 GHz Gyrotron

A. Kasugai, R. Minami, K. Takahashi, N. Kobayashi, T. Kariya, Y. Mitsunaka, K. Sakamoto (21R05)

Fusion Science and Technology / Volume 51 / Number 2T / Pages 213-216

February 2007

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The 170 GHz gyrotron for ITER demonstrated the stable and steady state 1000s operation with the output power of 0.6 MW and the efficiency of 45% by depressed collector. The remarkable progress was obtained with optimization of a built-in launcher and mirrors for significant reduction of the stray radiation to ~2% of the output power, improvement of electron beam quality for high oscillation efficiency and control of constant beam current for stable oscillation. The result indicates a promising prospect for development of a 1 MW-CW-50%, 170 GHz ITER gyrotron.

 
 
 
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