Cryogenic cooling system

A low volume cryogen cooling system comprising:

• a cryo-vessel having sidewalls, a top plate, and a bottom plate to form a hermetically sealed vacuum chamber;
• one or more pressurized gas bottles positioned internal to the cryo-vessel, the gas bottle storing pressurized gaseous cryogen;
• at least one superconducting magnet capable of generating a magnetic field and operating at temperatures less than 4 Kelvin, wherein the superconducting magnet is suspended in the hermetically sealed vacuum chamber by way of a suspension rod, and further comprising a charging connection;
• a plurality of cooling tubes arranged vertically around the superconducting magnet, each cooling tube have a top portion interconnected with an uppermost tubular framework and a bottom portion terminating at a lower tubular framework, wherein the top portion and the bottom portion are adjoined by a tube link;
• a recondenser connected to a second stage of the cryocooler which provides a thermal connection, the recondenser comprising tubing that receives cryogen from the plurality of cooling tubes and directs liquid cryogen to the lower tubular framework by way of gravitational force;
• a first heat exchanger embedded in the uppermost tubular framework;
• a thermal shield encompassing the plurality of cooling tubes and in thermal contact with a first stage of a cryocooler, the thermal shield having an inner component and an outer component that connect at a top surface and a bottom surface to enclose the plurality of cooling tubes and form a vacuum space centralized at a core of the cryo-vessel;
• and
• a pathway accessing the core;
• wherein the plurality of cooling tubes is filled with liquid cryogen to form a thermosiphon system adapted to cool the superconducting magnet to temperatures at or below about 4 Kelvin.