Nonmagnetic Broadband Microwave Ultra High Vacuum Joint

Abstract

The invention provides a non-magnetic broadband microwave ultra-high vacuum joint, which includes a joint seat, a microwave welding part, a ceramic part, a conductor core, a first coaxial medium, a first inner conductor clip, a joint matching adjustment part, and a first SMA Connector, first SMA male connector, SMA coaxial cable, inner conductor of coaxial cable, second SMA connector, second SMA male connector, connector fixing piece, second coaxial medium, second inner conductor clip; ultra-high vacuum connector All materials are non-magnetic; the present invention uses microwave vacuum sealing welding to weld the weldment and the ceramic medium, simplifies the process flow of the vacuum microwave coaxial joint, and significantly improves the application range in the ultra-high vacuum environment , and improve the vacuum sealing performance, so that the vacuum degree of the vacuum parts after welding is less than or equal to 10 ‑6 Pa, can reach 10 ‑9 ~10 ‑8 The pressure value in Pa is especially suitable for microwave vacuum experiments that require a non-magnetic environment.

Description

technical field [0001] The invention belongs to the field of microwave coaxial joints, and more specifically relates to a non-magnetic broadband microwave ultra-high vacuum joint. Background technique [0002] At present, scientific experiments need to be carried out in a non-magnetic interference and ultra-high vacuum environment, so ultra-high vacuum microwave joints made of non-magnetic materials are particularly important. Since most of the metal materials welded with ceramics are magnetic materials, good sealing performance can be achieved, and the manufacture of non-magnetic microwave ultra-high vacuum joints is a major difficulty. [0003] Since the non-magnetic dielectric material has the characteristics of low magnetic permeability, it is necessary to use this dielectric material in some non-magnetic experiments. Therefore, broadband microwave ultra-high vacuum joints with non-magnetic dielectric materials can play an important role in these occasions. [0004] Th...

AI Technical Summary

Problems solved by technology

[0004] The existing microwave coaxial joints mainly have the following defects or deficiencies: First, most of the sealed joints are used in environments that do not require high magnetic properties, and very few can make the joints non-magnetic; secondly, the welding of non-magnetic dielectric materials in the sealed joints Difficult, the high temperature generated during welding will cause the welded metal and dielectric material to be damaged due to deformation, and the sealing performance of the direct welding of the dielectric material and the metal is poor; again, the microwave coaxial joints currently on the market are mostly used for non-vacuum The environment generally only works in one atmospheric pressure environment, but not in 10 -9 to 10 -8 Pa pressure in ultra-high vacuum environment

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