Design of a High Vacuum Chamber and Microwave Fabry-Perot Cavity Resonator Using Torispherical Cap Mirror

A Balle-Flygare type cavity Fourier transform microwave (FTMW) sprectrometer is built by a Fabry-Perot cavity resonator in a high vacuum chamber. A torispherical cap will be used as both a mirror of the Fabry-Perot resonator and the tank head to close the vacuum chamber. This design can cut the costs of a vacuum system significantly. The effective dish reflector diameter, volume, and focus length of various torispherical domes are evaluated and discussed, including, but not limited to, DIN 28011, ASME standard, ASME high crowns (80/10, 80/6, and 90/8), and the noncoded tank heads. Gold plating will be performed on the dish surfaces to upgrade the conductivity, enhance the microwave reflectivity, and improve the corrosion resistance