Low-vibration low-temperature testing device

Abstract

The invention discloses a low-vibration low-temperature testing device. The low-vibration low-temperature testing device comprises a vacuum chamber provided with an opening, an optical vibration isolation platform used for fixing the vacuum chamber and isolating the vacuum chamber from external vibration, a G-M refrigerating machine, a corrugated pipe, a sample to be cooled, and a flexible cold guide belt; the G-M refrigerating machine is composed of a refrigerating machine main machine and a refrigerating head assembly, and the refrigerating head assembly is composed of a refrigerating head and a refrigerating head pedestal; the end parts of the corrugated pipe are connected with the opening of the vacuum chamber and the refrigerating head pedestal respectively in a sealing manner; a sealed vacuum space is formed by encircling of the corrugated pipe, the vacuum chamber, and the refrigerating head assembly; the refrigerating head is arranged in the sealed vacuum space; the sample to becooled is arranged in the sealed vacuum space, and is arranged in the vacuum chamber using a sample support; the flexible cold guide belt is arranged in the vacuum space, and the end parts of the flexible cold guide belt are connected with the sample to be cooled and the refrigerating head through hot connection. The low-vibration low-temperature testing device is capable of avoiding direct contact of the refrigerating head and the sample to be cooled, and reducing influences of vibration on samples effectively.

Description

technical field [0001] The invention belongs to the technical field of low-temperature refrigeration, and in particular relates to a low-vibration low-temperature testing device. Background technique [0002] The low temperature test device is a convenient and practical laboratory low temperature system, which can provide a temperature environment from 4K to 373K (-269°C to +100°C), and can be used for new materials, superconductivity, electronic devices, condensed matter physics, surface Research, testing and experimentation in physics and more. In some application fields, such as inertial confinement nuclear fusion systems that use X-rays to perform phase contrast characterization of frozen target spheres, the positional stability of frozen target spheres is required to be 1um or less. In cryogenic optical research, the amplitude control of cooled samples sometimes needs to reach the nanometer level. Considering the convenience of cold source utilization, it is often nec...

AI Technical Summary

Problems solved by technology

In the traditional low-temperature test device using the G-M low-temperature refrigerator as the cold source, the cooled sample is directly connected to the cold head of the refrigerator, and the vibration of the refrigerator is directly transmitted to the cooled sample, resulting in the vibration index of the cooled sample failing to meet the test requirements. needs

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