| 摘要 |
PURPOSE:To simplify a cryogenic device in support structure by a method wherein the thermal shrinkage of a multilayer radiation heat shield is absorbed through the deformation of the radiation heat shield itself and the sliding of the radiation heat shields on each other. CONSTITUTION:A cryogenic device is formed of a two-layered shield composed of a low temperature radiation heat shield 5 which is fully fixed by a horizontal support means 7 and fixed only in a vertical direction through a vertical support means 8 and a high temperature radiation heat shield 6 which is not fixed by the vertical support means 8, where the thermal shrinkage difference between the shields 5 and 6 is absorbed by the deformation of the high temperature radiation heat shield 6 and the sliding of the shields 5 and 6 on each other. |
