在小型加压超流氦实验装置中实现超导体的传热测量

Heat Transfer Measurement on Superconductor in Small HeⅡp Cryostat

论述了小型实验装置中的低温超导体传热实验所具有的特点、存在的问题以及解决方法．通过对实验装置、测量元件以及测量线路几方面的分析和计算，并根据室温下预试验所取得的结论，合理地设计了测量系统，从而确保了低温超导体传热实验的可靠性和高效率．低温下（ＨｅⅠ。

The characteristics and troubles of heat transfer experiments on superconducting wire in small HeⅡp cryostat are discussed. After the analysis of the experimental setup, sample and measuring circuit, a prediction and design for power supply circuit are done. A pre test of superconducting wire at room temperature is performed to get the maximum value of resistance and voltage of sample avoiding being burnt out at low temperatures. The prediction and the pre test provide useful data and make the experiment more efficient and more reliable in helium bath. The necessity of the work is confirmed afterwards by the experiments of NbTi/Cu (S1 1 5/0 07) wire at HeⅠ , HeⅡs and HeⅡp .