Cryo1, also known as Black Jack, is an Oxford 200 dilution refrigerator linked via a superconducting heat switch to a high purity copper demagnezitaion stage. Attached to the copper demag stage is a high purity silver cell. Inside the silver cell are ultrasonic acousic transducers for experiments on superfluid 3He. Previous experiments include the discovery of the Acoustic Faraday Effect and the mapping of the superfluid 3He in 98% aerogel phase diagram. Current experiments include a continuation of the Acoustic Faraday Effect and collective mode spectroscopy.

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