The Model 107 adiabatic demagnetization refrigerator (ADR) cryostat includes a He-3 sorption cooler to provide more power than other models. It aims to support ultra-low temperature research by providing quick and affordable access to mK temperatures. Many customizable options make it easy to reconfigure to fit your needs.
This system uses a single stage ADR to reach temperatures as low as 25 mK. An ADR operates by submitting a salt crystal to strong magnetic fields. In these different states, the salt crystal will either absorb or dump thermal energy. This is used to shuttle heat away from the sample stage achieving mK temperatures. Because of the nature of this process, only a certain amount of heat can be absorbed before the crystal must be warmed up and regenerated.
With a He-3 sorption cooler backing the ADR the Model 107 can maintain a temperature of 100 mK for 75 hours under a 1 µW load. The sorption cooler also maintains a high power 300 mK intercept stage for experiments that don’t need to be as cold. It is a robust “turn-key” mK alternative to dilution refrigerators.
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