Superconductor Measurement Techniques and Cryostat Design
John (Jack) W. Ekin
This introduction to measurement cryostat design includes illustrations of several practical cryostats for testing low-current thin-films and high-current bulk superconductors. Heat transfer is the heart of most cryostat designs and illustrative calculations are given. Other topics that will be discussed include optimal heat sinking of instrumentaion leads, wire materials selection, practical vacuum-tight electrical fixtures, vapor-cooled current leads, high temperature-super current leads, and variable temperature apparatus. A few properties of technical materials for constructing cryostats will be summarized.