Development of 170 GHz, 1 MW gyrotron with high-order TE31,11 mode oscillation for ITER EC system

被引：10

作者：

Ikeda, Ryosuke ^{[1
]}

Oda, Yasuhisa ^{[1
]}

Kobayashi, Takayuki ^{[1
]}

Terakado, Masayuki ^{[1
]}

Kajiwara, Ken ^{[1
]}

Takahashi, Koji ^{[1
]}

Moriyama, Shinichi ^{[1
]}

Sakamoto, Keishi ^{[1
]}

机构：

[1] Natl Inst Quantum & Radiol Sci & Technol QST, Naka, Ibaraki 3110193, Japan

来源：

FUSION ENGINEERING AND DESIGN | 2018年 / 128卷

关键词：

Gyrotron; ITER; High-order mode; Mode competition;

D O I：

10.1016/j.fusengdes.2017.12.042

中图分类号：

TL [原子能技术]; O571 [原子核物理学];

学科分类号：

0827 ; 082701 ;

摘要：

A TE31,11 mode gyrotron has being developed to improve the output power for the ITER electron cyclotron (EC) system. Strong mode competition having counter-rotating modes in both the high and/or low field sides is, in general, the typical issue for high order mode oscillations. Active anode voltage control and beam radius control were introduced to overcome this issue and obtain stable 1 MW oscillation. The TE31,11 mode was oscillated in a hard-self excitation region and the efficiency was improved up to 50%. Long pulse operation of output power of 1 MW with total efficiency of 46% for 230 s was also performed. Oscillations of over-1 MW power of 1.1 MW and 1.2 MW for 2 s pulse were achieved.

引用

页码：23 / 27

页数：5

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