Abstract
In order to explain the basic structure of cryostats, several types of cryostats are illustrated and the functions of their parts are also described. The principal paths of heat leak from ambient temperature to a cryostat are described together with a structure to intercept this heat flow. In recent times, cryogenic applications have progressed with the result that they are much demanding of conditions, which are not favorable for cryostat design. One must solve this problem by understanding the heat flow paths in cryostats and tranding off the requirements of applications.
