Getter chamber structure of front-end Dewar flask for superconducting receiver

Abstract

The invention relates to a getter chamber structure of a front-end Dewar flask for a superconducting receiver. The getter chamber structure comprises a getter chamber composed of a getter chamber wall. The upper wall of the getter chamber recesses inwards to the getter chamber to form a cavity, and the cavity with a head at the lower end and an open upper end is used for mounting a heating rod. A plurality of getters are arranged around the upper wall recessing inwards to the getter chamber. Insulation tubes are arranged between the getters and the upper wall which is not recessed to the getter chamber. Fixed tubes are welded around the head. Other insulation tubes are arranged between the fixed tubes and the getters. The getter chamber structure is simple in structure and low in manufacturing cost, the getters are directly activated by contact heating, installation of Kovar and glass-sintered lead poles is not required, system parts are less, system reliability and environmental suitability are higher, and the getter chamber structure is applicable to places with high mechanics requirements.

Description

technical field [0001] The invention relates to a getter chamber structure, in particular to a getter chamber structure of a Dewar for the front end of a superconducting receiver. Background technique [0002] The superconducting receiver front-end can greatly improve the receiver noise system and improve the receiving sensitivity. It has broad application prospects and huge market potential in the fields of microwave channels such as mobile communications, military communications, and satellite communications. Now, developed countries such as the United States have gradually applied the front-end of superconducting receivers using high-temperature superconducting materials to fields such as communication satellites, reconnaissance satellites, deep space exploration and high-speed space data transmission systems. For example, from the 21st century space strategy support technology project implemented by NASA in 2001, it can be seen that the "receiver front-end" with high-tem...

AI Technical Summary

Problems solved by technology

For the front-end Dewar of the superconducting receiver, as the number of channels increases, the volume gradually increases, which requires a corresponding increase in the number of getters, but at the same time it will cause an increase in the number of lead posts, making the series components in the system increased, reducing the reliability of the system

In addition, the welding point between the getter pin and the lead column is the mechanical support point of the getter. When the Dewar used for the front end of the superconducting receiver is used in harsh environments such as vibration and impact, it will cause the getter pin and the lead wire to be damaged. The welding point of the column fails or breaks, causing the getter to fail to activate, and in severe cases, affecting the safety of other components in the Dewar

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