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一些量子器件的电学特性需要在极低温的环境中进行测试标定。一般测量需要在温度为4.2K的液氦环境中进行。为满足需求,设计了低温密封探测杆。可将需要测量的样品固定于样品杆底端,通过样品杆将样品置于充有液氦的液氦罐内。实验中测量到的信号将通过样品杆内的低导热率测量线从杆的底端传输至顶端密封盒,后传输出到外部测量设备。本文基于Auto CAD软件的描述,介绍样品杆的外部设计和内部构造。
The electrical properties of some quantum devices require test calibration in cryogenic environments. The general measurement needs to be carried out in a liquid helium at a temperature of 4.2K. To meet the needs of the design of the low-temperature sealed detection rod. The sample to be measured can be fixed to the bottom of the sample rod, and the sample is placed in the liquid helium tank filled with liquid helium through the sample rod. The signal measured in the experiment will be transmitted from the bottom of the rod to the top seal box through the low thermal conductivity measurement line in the sample rod and then transmitted to the external measuring device. This article describes the external design and internal structure of the sample stem based on the description of the Auto CAD software.