The Development of Diamond Out-Put Window for 170GHz Gyrotron

• Published in: 2023 Cross Strait Radio Science and Wireless Technology Conference (CSRSWTC) pp. 1 - 2
• Main Authors: Chen, Bo, Hu, Qiang, Liu, Ben Tian, Liu, Ji Xiang, Jia, Xue Jiao
• Format: Conference Proceeding
• Language: English
• Published: IEEE 10.11.2023
• Subjects: diamond; Diamonds; Dielectric losses; gyrotron; Gyrotrons; microwave out-put windows; Power generation; Scattering parameters; Temperature measurement; Titanium alloys
• ISSN: 2377-8512
• DOI: 10.1109/CSRSWTC60855.2023.10427336

The Out-put Window is an important component of the gyrotrons which are be applied to heat the reaction particles in magnetic confinement fusion system. A diamond Out-put Window was accomplished several weeks ago. The S Parameters and dielectric losses of the diamond disc which was made by DCVCDs were measured. The \mathbf{S}_{\mathbf{21}} is between-0.02 dB to -0.05dB and The relative dielectric constant loss tangent between \mathbf{9}\times \mathbf{10}^{-\mathbf{4}} to \mathbf{9}\times \mathbf{10}^{-\mathbf{5}} . The thermal simulation of the disc was complete by ANSYS. The temperature in the center area of the window is reaching to 180.19 °C and 238.65 °C respectively On the conditions of output power of 600KW and 800KW. A thin film titanium alloy was metallized along the edge of disc. The diamond Out-put Window was brazed by cooper-siler alloy at the temperature of 820 °C.