VACUUM BRAZING OF A HIGH-FREQUENCY WAVEGUIDE OF A RECTANGULAR SECTION AND MINIMAL REFLECTION WITH A FLANGE

Abstract

The technology of vacuum brazing of a long high-frequency waveguide with variable cross-section and minimal reflection with a flange made of a composite material based on copper is presented. When developing the technology, experiments were carried out under different temperature conditions, and materials with different properties were also used. Oxygen-free copper was chosen as the material for the waveguides. Due to its properties, oxygen-free copper is easily processed on metal-cutting machines and is widely used in accelerator technology. The BVAg-8 alloy was selected as the filler, which satisfies the conditions corresponding to the vacuum brazing process with its composition. Filler is an alloy of silver and copper. Brazing of a rectangular waveguide and a flange was performed under high vacuum conditions, in a vacuum brazing unit, which was restored and modernized at the CANDLE Synchrotron Research Institute.