Installation of a 154 GHz mega-watt gyrotron and its contribution to the extension of plasma parameter regime in LHD

Author

Shimozuma, Takashi ; Takahashi, Hiroki ; Ito, Satoshi ; Kubo, Satoshi ; Yoshimura, Yuki ; Igami, H. ; Nishiura, Masaki ; Ogasawara, Satoshi ; Makino, R. ; Mizuno, Yosuke ; Okada, Kenichi ; Kobayashi, S. ; Mutoh, T. ; Minami, Ryutaro ; Kariya, Tsuyoshi ; I

Author_Institution

Nat. Inst. for Fusion Sci., Toki, Japan

fYear

2013

fDate

1-6 Sept. 2013

Firstpage

1

Lastpage

2

Abstract

A new 154GHz/ 1MW gyrotron was developed and installed in the Electron Cyclotron Resonance Heating system of LHD. The maximum output power of 1.16MW/ 1sec was achieved. Total injected power into a plasma reached 4.4MW with the existing three 77GHz gyrotrons´ power. The 154GHz gyrotron contributed to extend the plasma parameters to higher temperature and density region.

Keywords

gyrotrons; plasma instability; plasma radiofrequency heating; LHD; density region; electron cyclotron resonance heating system; frequency 154 GHz; frequency 77 GHz; gyrotron power; plasma parameter regime; power 1 MW; power 4.4 MW; total injected power; Educational institutions; Gyrotrons; Heating; Optical waveguides; Plasma temperature; Power generation;

fLanguage

English

Publisher

ieee

Conference_Titel

Infrared, Millimeter, and Terahertz Waves (IRMMW-THz), 2013 38th International Conference on

Conference_Location

Mainz

Type

conf

DOI

10.1109/IRMMW-THz.2013.6665481

Filename

6665481