给出了用于HT-7超导托卡马克聚变实验装置的电子回旋共振加热(ECRH)系统大功率毫米波传输线的设计.该传输线将回旋管输出的频率为60GHz,峰值功率200KW,脉冲宽度不大于100ms的毫米波传输数十米.在传输过程中将最初的TE02波转换为TE01波,再进一步转换至准线性TE11波,最终通过准光学天线将该毫米波以一定的角度发射到托卡马克等离子体中.

The design of the high power millimeter wave transmission line for Electron Cyclotron Resonance Heating (ECRH) system on the HT 7 Tokamak was given. The waves output from the gyrotron with peak power of 200kW, frequency 60GHz and pulse length around 100ms was transmitted for several tens of meters through this line. In the transmission process, the wave's mode was converted from initial TE 02 mode to TE 01 and then to the semi linear TE 11 mode by two mode converters. In the end of the transmission line, the wave was coupled to the semi optical antenna and then was launched into plasmas along a special angle.