HelioxVT – Sample-in-vacuum 3He Cryofree Refrigerator

Brand: oxford Nano Science

Product Code: HelioxVT – Sample-in-vacuum 3He Cryofree Refrigerator

Availability: On Request

This sample-in-vacuum ³He refrigerator achieves less than 300 mK for more than 40 hrs and achieves 50 µW of cooling power at 350 mK for over 6 hrs.

The HelioxVT uses a cold gas environment with a 50 mm access, therefore no need for a 1 K pot on the insert. This provides two key benefits:

  1. The sample temperature range of a new or existing VTI can be extended below 280 mK
  2. There is no liquid helium in the horizontal sample plane making the HelioxVT ideal for neutron or X-ray scattering experiments

A complete system consists of:

  • HelioxVT insert
  • Temperature controller to operate the refrigerator
  • A variable temperature insert (VTI) with pump

Flexibility: Heliox insert systems suit experiments at temperatures around 300 mK, particularly ideal for neutron or X-ray scattering applications

Ease of use: The sample is accessed by removing the insert, warming to room temperature and removing the inner vacuum chamber (IVC) tail

High performance: 300 mK for more than 40 hours (with no applied heat load)

Base Temperature: 300 mK for 40 hrs with no applied heat load

Cooling Power: < 350 mK for 6 hrs with 50 μW applied.

Temperature range: 300 mK to 300 K

Temperature stability: ± 3 mK below 1.2 K; ± 0.1 K above 1.2 K

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