Development of a Propagating Millimeter-Wave Beam Position and Profile Monitor in the Oversize Corrugated Waveguide Used in an ECRH System

作者：Shimozuma Takashi^*; Kobayashi Sakuji; Ito Satoshi; Ito Yasuhiko; Kubo Shin; Yoshimura Yasuo; Nishiura Masaki; Igami Hiroe; Takahashi Hiromi; Mizuno Yoshinori; Okada Kohta; Mutoh Takashi

来源：Journal of Infrared Millimeter and Terahertz Waves, 2016, 37(1): 87-99.

DOI：10.1007/s10762-015-0196-y

• Electron cyclotron resonance heating
• Corrugated waveguides
• Mode analysis
• HE11 mode
• Peltier-device

In a high-power electron cyclotron resonance heating (ECRH) system for plasma heating, a long-distance and low-loss transmission system of the millimeter wave is required. A real-time monitor of the millimeter-wave beam position and its intensity profile, which can be used in a high-power, evacuated, and cooled transmission line, is proposed, designed, manufactured, and tested. The beam-position and profile monitor (BPM) consists of a reflector, Peltier-device array, and a heat-sink, which is installed in the reflector-plate of a miterbend. The BPM was tested using both simulated electric heater power and high-power gyrotron output power. The profile obtained from the monitor using the gyrotron output was well agreed with the burn patter on a thermal sensitive paper. Methods of data analysis and mode-content analysis of a propagating millimeter-wave in the corrugated waveguide are proposed.

• 出版日期2016-1