| 摘要 |
PURPOSE:To make it possible to flow a large current preventing entry of heat from a normal temperature region while maintaining a good flow of the coolant by providing a cooling plate having holes for coolant flow in a current lead provided in a crylostat. CONSTITUTION:A pluraity of cooling plates 10 having holes 9 are provided within a current lead 4 for the flow of coolant gas which cools the current lead 4. The cooled current lead that brings helium gas from normal temperature region is mounted on the surface of the inside wall 11 of a cryostat which interferres the flow of gas coolant because of the installed equipments such as a measuring apparatus of critical current. The current lead allows the flow of a large current, preventing the entry of head of the normal temperature while maintaining a good flow of helium gas and effective heat exchange. |
