Influence of the Electrical Parameters on Multistage Depressed Collector Characteristics in a Coupled Cavity TWT
Zhang Ying-hui①② Luo Ji-run① Guo Wei① Zhu Min①
①Key Laboratory of High Power Microwave Sources and Technologies, Institute of Electronics, Chinese Academy of Sciences, Beijing 100190, China ②Graduate University of Chinese Academy of Sciences, Beijing 100039, China
Abstract：In this article, based on a coupled cavity TWT design software, Orprogr code, the simulation design of a X band coupled cavity TWT is performed for realizing the expected electric characteristics. Under the condition of the above-mentioned design results, a depressed collector is designed with the minimum collector efficiency of 71.5% and the electron beam may relatively evenly spreads on the surface of each sub-area of the depressed collector. Then the influence of laminar flow, electrode shape, voltage drop and electrical field on the distribution of the beam is discussed by analyzing the spreading of electron beam on the surface of each sub-area of the depressed collector.
2011, Vol. 33 
