Abstract
In this paper, the influence of thermal performance of cathode-heater assembly of Traveling Wave Tube (TWT), which has different contact form between inner heat shield and supporting cylinder, is analyzed using the simulation software ANSYS. With both thermal radiation and heat conduction are considered, the temperature and heat flux distribution of structures with different contact form are calculated, and also starting time which is needed before temperature come into steady status. The result of analysis suggests that changing the contact form between inner heat shield and support cylinder can influence the thermal performance of cathode-heater assembly and improve assembly’s temperature distribution and promote heater’s heating efficiency. The result of this paper provides theoretical guidance in the design of cathode-heater assembly.
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