Abstract
The detailed analyses of heat transfer and its effect on the cold cavity, effective conductivity, and beam-wave interaction for a 0.24-THz megawatt-class gyrotron is presented in this paper. In the heat transfer analysis, the commercial finite-element method software ANSYS was used, in which Fluent was selected to simulate the thermal analysis, and Static Structural was selected to simulate cavity mechanics. For the cavity cooling system, 50 uniform axial wedge grooves in the outside surface of the cavity were considered, in which the total external loaded coolant flow rate is 40 L/min. The thermal analysis result shows that the maximum temperature is about 260 °C in the center section of the cavity. The deformed cavity was obtained by the structural analysis. After ANSYS simulation, the cold and the hot cavities with deformation were simulated by the in-house developed time-dependent, self-consistent multimode interaction code, in which the distributed conductivity caused by the distributed temperature was used. For the cold cavity, the electric field profile is not changed significantly, but the diffraction quality factor and resonant frequency are reduced by 60 and 0.191 GHz, respectively. The output power is not changed seriously, but the oscillation frequency is decreased by 0.18 GHz.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.