Development of tuning diaphragm for high power continuous wave klystron

In order to meet the requirement of 150MHz frequency tuning range for continuous wave klystron, a copperl Mn copper-nickel alloy/copper (Cu/ (Cu-Ni) ICu) diffusion welding tuning diaphragm with a thickness of 0.3mm and the corresponding tuning mechanism were developed. During the research, the vacuum hot pressing diffusion welding of composite material, the stamping and forming of tuning diaphragm, the microstructure analysis of copper / Mn copper-nickel alloy /copper diffusion interface, and the test of turning range of tuning structure at X band are carried out. The results show that the tunable range of the composite diaphragm and the tuning structure can reach 280MHz, which is far beyond the design requirement.