Cooling apparatus for a superconductor and superconducting synchronous machine

Cooling means (1, 23) for a superconductor, especially a high-temperature superconductor of a synchronous machine (2) comprising a cooling circuit for a cooling medium (30, 15), wherein in a cold head (6) with a condenser (7) liquefied cooling medium ( 15 is guided) to the to be cooled superconductor, particularly in the rotor (4) of the synchronous machine (2), directed and gaseous back to the condenser (7), where (for the promotion of the cooling medium 30, 15) (from the condenser 7) a vaporized by means of a heat source (14, 24) portion (30) of the cooling medium (30, 15) is generated pressure to the superconductor.