Cooling system for a cryochamber

A cryochamber, comprising:

• a cooling system, comprising:
• a working fluid including at least two different refrigerants with different boiling points;
• a compressor having an inlet configured to receive the working fluid and fluidically connected to an outlet of an inner heat exchanger and an outlet fluidically connected to an inlet of a heat exchanger;
• the heat exchanger including an outlet fluidically connected to a first inlet of a recuperative heat exchanger;
• the recuperative heat exchanger including a first outlet fluidically connected to an inlet of a flow constrictor and a second inlet fluidically connected to an outlet of the inner heat exchanger and a second outlet fluidically connected to the inlet of the compressor;
• the flow restrictor including an outlet fluidically connected to an inlet of the inner heat exchanger;
• and
• the interior heat exchanger including a surface configured to receive with surrounding air.

A method, comprising:

• receiving a working fluid, wherein the working fluid includes at least two different refrigerants with different boiling points;
• compressing the received working fluid;
• releasing heat from the received working fluid to generate a first cooled working fluid;
• releasing additional heat from the first cooled working fluid to a cooled portion of the working fluid to generated a second cooled working fluid;
• constricting flow of the second cooled working fluid to generated a constricted working fluid;
• decreasing pressure of the constricted working fluid to generated a third cooled working fluid;
• and
• releasing heat from a cryochamber using the third cooled working fluid to generated the cooled portion of the working fluid.