大平均功率耦合腔行波管慢波系统的散热设计

The Cooling Design of High Average Power CCTWT Slow Structure

慢波系统的功率容量是制约行波管平均功率提高的关键因素之一,特别是对于采用周期永磁(PPM)聚焦方式的耦合腔行波管更是如此。本文正是针对上述问题,研究了提高耦合腔行波管慢波系统散热能力的途径以及可采取的措施。提出了一种可提高耦合腔行波管慢波系统散热能力的结构方案,并对方案进行了热分析及磁分析。制管结果表明采用该散热结构方案的慢波系统能稳定承受1500W的电子截获功耗使整管实现2.4kW的平均功率输出。

The power capacity of coupled cavity slow wave line is a key factor to restrict the increase of average power,especially for coupled-cavity TWT（CCTWT）with PPM.In this paper,the methods to increase the average power of CCTWT are investigated.One structure which can improve the heat-sinking capability of coupled cavity slow wave line is brought forward.With this structure,2.4 kW average power of a certain CCTWT has been developed.