ABSTRACT
This chapter includes topics about superconducting magnets that are cooled without liquid helium. Beginning with the general history of the discovery of superconductivity, the discussion leads into basic design principles for all superconducting magnets—both those cooled in liquid helium and by 4 K cryocoolers.
Historical development, motivation, and enabling technologies that have allowed for cryogen free superconducting magnets is covered. Special design considerations are required for cryogen free magnets and these topics are discussed as well. High temperature superconducting magnets’ present status is also included.
Finally, current status, examples, and future expectations for cryogen-free superconducting magnets is discussed.
