An extended-interaction klystron: Efficiency and bandwidth
An extended-interaction klystron: Efficiency and bandwidth
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DOI：
10.1109/t-ed.1966.15708
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发表时间：
1966-04
影响因子：
3.1
通讯作者：
M. Chodorow;B. Kulke
中科院分区：
文献类型：
--
作者：
M. Chodorow;B. Kulke
在近25KV、1100Mc/S的脉冲工作条件下，对由环形棒结构的谐振腔组成的三腔扩展互作速调管进行了测试，输出腔的有效长度在1~5个谐振半波长之间变化。通过连续调谐输入腔和中间腔来模拟宽带交错调谐聚束段。研究了效率和饱和带宽与输出腔长度和负载条件以及束流速度的关系。结果表明：随着腔长的增加，峰值效率上升到一个点，然后保持不变，而带宽与腔长成正比增加。随着负载的减少，对于给定的腔长，效率通常单调上升，直到负载的进一步减少导致再生腔在设计谐振频率处开始振荡。随着腔长的增加，对相邻谐振中再生振荡的必要抑制变得更加困难，而耦合器的质量给出了对腔长度的基本限制，它必须能够在较宽的频率范围内提供均匀和重载。
A three-cavity extended-interaction klystron, with cavities consisting of resonated sections of ring-bar structure, was tested in pulsed operation near 25 kV at 1100 Mc/s. The active length of the output resonator was variable between one and five resonant half wavelengths. The input and the intermediate cavities were tuned continuously to simulate a wide-band stagger-tuned bunching section. The dependence was investigated of the efficiency and the saturated bandwidth on the length and the loading conditions of the output resonator, and on the beam velocity. Data are presented which lead to the following conclusions: As the cavity length is increased, the peak efficiency rises up to a point and then remains constant, while the bandwidth increases proportional to cavity length. As the loading is reduced, for a given cavity length, the efficiency generally rises monotonically until further reduction in loading results in the onset of regenerative cavity oscillations at the frequency of the design resonance. The necessary suppression of regenerative oscillation in adjacent resonances becomes more difficult as the cavity length is increased, and a basic limitation on cavity length is given by the quality of the coupler, which must be capable of providing uniform and heavy loading over a broad frequency range.