Method and apparatus of cooling a toroidal ring magnet

摘要

The torodial ring magnet is cooled by a gaseous cooling medium which is conducted through a first cooling circuit through the channels of the magnet coils of the magnet. The gaseous cooling medium exiting the magnet is cooled by a second liquid cooling medium in a second cooling circuit within an auxiliary cooler. Temperature sensors are provided to sense the temperature of the exiting gaseous cooling medium from the magnet sections to permit the opening or closing of a valve in the auxiliary cooler to cause the gaseous coolant to be cooled or not by the liquid cooling medium.