CRYOGENIC COOLING SYSTEM

原文（中文）

A cryogenic cooling system (), having a working region (), a first cryocooler () having a first cooling stage (), a first conduit () for passing a stream of fluid cooling medium towards the working region (), at least one thermal coupling () of the first conduit () and the first cooling stage () for cooling the fluid cooling medium, a second cryocooler () having a second cooling stage (), a first cold stage (), at least one thermal coupling () of the second cooling stage () and the first cold stage () for cooling the first cold stage (), and a first thermal coupling () of the first cooling stage () and the first cold stage (), provided by a coupling element (), for cooling the first cold stage (), wherein the coupling element () has a controlled thermal coupling for reducing the first thermal coupling when a relevant temperature of the cryogenic cooling system () is below a threshold temperature.