Josephson Junction (front) Test System

With the development of science and technology, traditional physical measurement of metrology has gradually reflected its limitations in this area:difficult to preserve.easily damaged and other features brought restrictions on the basis of measurement in the field has been hampered theory in the field of exploration and practice,it is imminent to create a new high stability of the measurement junction.This article focus on the research of Josephson junction (array) test system, including elaborate superconducting phenomena and Josephson effect a, the main focus on the test system, including machinery, hardware and software testing procedures, the final analysis of the experiment As a result, out of the well test results. Mechanical design is mainly based on three-dimensional design SolidWorks software designed to fit under a very low temperature condition of multi-core probe in a vacuum seal, and according to the test system software design Protel needed in the circuit board PCB; need to design software to control instruments, experimental measurements to achieve program code, the system selects the graphical programming language LabVIEW. The test system is designed according to their needs, and the test was successful, but inevitably in defects and functional needs improvement.