Development of a kW Level-200 GHz Gyrotron FU CW GI with an Internal Quasi-optical Mode Convertor
Development of a kW Level-200 GHz Gyrotron FU CW GI with an Internal Quasi-optical Mode Convertor
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DOI：
10.1007/s10762-012-9881-2
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发表时间：
2012-02
期刊：
影响因子：
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通讯作者：
Y. Tatematsu;Y. Yamaguchi;T. Idehara;Takanori Ozeki;R. Ikeda;T. Kanemaki;I. Ogawa;T. Saito
中科院分区：
文献类型：
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作者：
Y. Tatematsu;Y. Yamaguchi;T. Idehara;Takanori Ozeki;R. Ikeda;T. Kanemaki;I. Ogawa;T. Saito
福井大学远红外区域开发研究中心（FIR FU）已开始开发带有内部模式转换器的回旋管。作为此类陀螺仪中的第一个，我们设计并制造了 Gyrotron FU CW GI。它在基本回旋加速器共振下工作在 203 GHz。我们在一些限制下设计了腔体和模式转换器，例如电子枪的重复使用和磁体孔的小直径。设计输出功率约为1kW。我们成功地观察到了圆形辐射图。当设置阴极电压为20 kV、束流为0.5 A时，观测到的最大输出功率为0.5 kW。这一成功使得远红外FU中回旋管的发展进入了一个新的阶段。
Development of gyrotrons with an internal mode convertor has started in Research Center for Development of Far-Infrared Region, University of Fukui (FIR FU). As the first gyrotron of such a kind, we have designed and manufactured Gyrotron FU CW GI. It operates at 203 GHz at fundamental cyclotron resonance. We have designed a cavity and a mode convertor under some constraints such as reuse of an electron gun and small diameter of a magnet bore. Designed output power is about 1 kW. We have succeeded in observation of a circular radiation pattern. The maximum observed output power is 0.5 kW for the setting cathode voltage of 20 kV and the beam current of 0.5 A. This success makes gyrotron development in FIR FU to proceed to a new stage.