FIELD: heating.
SUBSTANCE: cryogenic system includes a liquid helium tank, superconducting magnet windings submerged into liquid helium, a condenser for repeated liquefaction of helium vapours, which has convergent smooth surface, on which helium vapours are condensed and which is periodically interrupted with an interrupting structure that causes discharge of liquid helium that is condensed on smooth surface from a repeated liquefaction condenser. The condenser includes a cooled object that has a converging smooth surface having the possibility of its being installed along vertical axis, many fins passing in a circumferential direction around smooth surface. Upper edge of each fin is located flush with a section of smooth surface, which is located immediately above, and perimetre of lower edge of each fin is larger than that of its upper edge. Between upper and lower edges of each fin there is a smooth inclined surface. A manufacturing method of a condenser for repeated liquefaction, at which machining of a metal element is performed to obtain circular smooth surface of the condenser for repeated liquefaction, which is interrupted by many fins passing in a circumferential direction or helically and projecting out of circular smooth surface, or grooves cut in circular smooth surface.
EFFECT: improving efficiency of a cryogenic cooling system.
15 cl, 4 dwg
