Proof of principle of a high power terahertz pulse gyrotron for collective Thomson scattering diagnostics

需要发展用于测量聚变等离子体离子温度的集体汤姆逊散射(CTS)诊断方法。对适用于CTS的高功率亚太赫兹回旋管进行了研制。为避免超导磁体的工艺局限性，采用了二次谐波振荡，并采用了先进的设计方法。结果表明，最高功率为83kW。演示了389太赫兹。此外，还设计并制作了一种实用的内模转换器。

Development of collective Thomson scattering(CTS) diagnostics for measurement of ion temperature of fusion plasmas is needed. A development study of high power sub terahertz gyrotron applicable to CTS has been carried out. Second harmonic oscillation was adopted to avoid technological limitation of a superconducting magnet and the design method of state of the art was applied. As a result, highest power of 83 kW at 0. 389 THz was demonstrated. Moreover, a practicable internal mode convertor was designed and fabricated.