Development of dual-frequency gyrotron with triode magnetron injection gun

Kajiwara, Ken; Oda, Yasuhisa; Kasugai, Atsushi; Takahashi, Koji; Sakamoto, Keishi

A dual frequency gyrotron is designed and tested in JAEA. The design is based on a 170 GHz single frequency gyrotron with a triode magnetron injection gun (MIG). The other frequency of 137 GHz is selected in order to use 1.853 mm thickness single disk output window. The cavity modes for 170 GHz and 137 GHz are TE $_{31,11}$ and TE $_{25,9}$ , respectively. They are selected for a high efficiency internal mode converter. In short pulse experiments, the maximum power of more than 1.3 MW with high efficiency for both frequencies are achieved. These results show the successful design of the dual frequency gyrotron with the triode MIG.

Language	:	English
Journal	:	Applied Physics Express
Volume	:	4
Number	:	12
Pages	:	p.126001_1 - 126001_3
Publication Year/Month	:	2011/12
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Paper URL	:	https://doi.org/10.1143/APEX.4.126001
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Keywords	:	no keyword
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Registration No. : AA20110397
JAEA Abstracts No. : 40000116
Paper Submission No. : 10046

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