Data acquisition system for Peltier current leads used in the Ishikari project
IVANOV Yury, 筑本 知子, 渡邉 裕文, 高野 廣久, 井上 徳之, 山口 作太郎 （中部大）
Abstract:The important way of optimization of superconducting devices is the redaction of incoming heat load. In order to decrease heat leakage through the current leads, they can be equipped with Peltier elements. The mentioned technology is being actively developed in Chubu University. Commercial samples of the Peltier current leads (PCLs) are installed at the terminals of 500-meter DC HTS cable facility in Ishikari (Hokkaido). This cable is designed for 5 kA. Each end of the cable’s HTS tape is connected to individual PCL. In order to examine behavior of 144 pieces of PCLs in details, each piece is supplied with thermocouples and voltage taps. In addition, current through PCL can be measured by means of individual current transformer. The hardware part of the data acquisition system includes four Keithley 3706A multimeters equipped with 60-channel model 3724 FET multiplexer cards. The program part was written using LabVIEW software solution. Information about system, PCL structure, and preliminary experimental results will be presented at the Conference.