Cryogenic target low temperature adsorption inhibition opening mechanism

Abstract

The invention discloses a low-temperature adsorption suppression opening mechanism for a cryogenic target, which is used to directly expose the cryogenic target before laser injection into the target, comprising: a motor drive unit installed on the cantilever base, including a drive motor; The screw transmission mechanism installed on the cantilever base includes a moving frame, which is used to convert the rotation of the driving motor into a front-to-back linear motion of the moving frame; The low-temperature movable screen and the normal-temperature movable screen with the front opening provided, and the low-temperature fixed screen and the normal-temperature fixed screen with cooling and guiding functions. The low-temperature adsorption suppression opening mechanism of the cryogenic target, the low-temperature movable screen and the normal-temperature movable screen have a telescopic function, that is, to effectively protect the cryogenic target, reduce impurity gases and organic substances to be frozen and adsorbed to the target surface, and quickly when needed Expose the cryogenic target directly to the vacuum chamber environment.

Description

technical field [0001] The invention belongs to the technical field of inertial confinement fusion, and in particular relates to an adsorption suppression mechanism for a cryogenic target. Background technique [0002] Inertial confinement fusion is an effective way to achieve controllable thermonuclear fusion, an effective way to explore new energy sources, and also the commanding heights of science and technology strategies that developed countries are competing to occupy, which has great practical and strategic significance. Compared with conventional targets, the number of neutrons produced by cryogenic target fusion has increased significantly, and it is the most promising target type to achieve fusion first. However, the realization of its goal requires specific extreme physical conditions: the cryogenic target needs to be kept at an ultra-low temperature below 18K to keep the target in a frozen state, and its temperature needs to be stable. [0003] It should be note...

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Problems solved by technology

[0011] In order to solve the problem that the thermal radiation shield needs to be opened and closed quickly in a limited space and keep the low temperature stably during the shooting process of the cryogenic target, the present invention provides a shield that can open the normal temperature shield and the low temperature shield at the same time to realize deep cooling. Local rapid exposure of cold target target for laser targeting cryogenic target low temperature adsorption inhibition opening mechanism

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