Fluid path insert for a cryogenic cooling system

A removable sample sleeve configured to be disposed within a cooling system of a dynamic nuclear polarization system, and collect ice that forms within the cooling system, wherein the removable sample sleeve comprises:

• an upper portion configured to be disposed within a portion of the cooling system outside of a sample pot of the cooling system;
• a lower portion configured to be disposed within the sample pot, wherein the lower portion comprises a thermal switch configured to warm the lower portion;
• and
• a body portion configured to be disposed both within and outside of the sample pot.

A controller-executable method of de-icing a removable insert sleeve of a cooling system, the method comprising:

• receiving a first set of sensor data from one or more sensors configured to collect data regarding the cooling system, wherein the cooling system is configured to cool a sample, wherein the cooling system comprises a removable sample sleeve configured to collect ice that forms within the cooling system, wherein the removable sample sleeve comprises a thermal insert configured to directly heat a bottom surface of the removable sample sleeve;
• determining whether the first set of sensor data is indicative of ice formation in the cooling system;
• sending a command to actuate a thermal switch when the first set of sensor data is indicative of ice formation in the cooling system;
• receiving a second set of sensor data from the one or more sensors;
• determining whether the second set of sensor data is indicative of de-icing conditions;
• and
• sending a command to deactivate the thermal switch when the second set of sensor data is indicative of de-icing conditions.