An All Metal UHV Flange Seal for Dissimilar Materials

An inexpensive all metal flange seal has been developed for the all aluminum Aladdin RF accelerating cavity that couples up to stainless steel beam transport lines without using aluminum-stainless steel bonded materials. The seal is capable of at least 10-9 Torr without detectable leakage and can be baked out at temperatures of at least 300°C. It utilizes commercially available sealing rings and slightly modfied Varian CFF flange components.