高功率速调管双管功率合成可行性与技术方案研究

Study on the feasibility and technical scheme of power synthesis of two high power klystrons

对由两支500kW高功率速调管功率合成得到1MW长脉冲低混杂波(LHCD)微波源的可行性进行了分析,并设计了双管功率合成的方案。在HL-2A装置低杂波实验平台上,利用兆瓦级功率合成器,结合相位反馈技术,对两支高功率速调管、四路250kW进行相干微波功率合成,从而得到1MWLHCD微波。经过可行性分析得到,双管相位偏离15°时合成效率下降约1.8%,幅度偏差10%时合成效率下降约0.1%。由此可得到双管功率合成技术的具体实施方案。

The feasibility of a 1 MW low hybrid current drive(LHCD) microwave synthesized by two 500 kW high power klystrons is analyzed, and the scheme is designed. Through the MW level power synthesizer combining with the phase feedback technique to synthesize four channels 250 kW microwave of two tubes, the MW level LHCD source is obtained on the HL-2A LHCD experimental platform. The feasibility analysis shows that the synthesis efficiency decreases by about 1.8% due to the phase deviation of 15° and 0.1% when the amplitude deviation is 10%. Therefore, the specific implementation scheme of two-klystron power synthesis technology is obtained.