To effectively prevent a crossover hang-up of a cryopump.

A bottomed cylindrical radiation shield 60 which is coupled to a first heat station 52 so as to surround a second heat station 53 is coated at its outer periphery 60A with a coating of a silicone, epoxy or other system containing any of silicon carbide, silicon dioxide, titanium dioxide, zirconium dioxide and boron nitride as a radiation-absorbing layer 20 which absorbs infrared radiation and far infrared radiation. The infrared radiation that the radiation-absorbing layer 20 absorbs raises the temperature of the radiation shield 60 and holds it at a higher temperature.