Part of the Oxford Instruments Group


A 3He sample-in-vacuum insert system compatible with 4He variable temperature inserts. 

  • High performance

  • Easy to use

  • Quick sample change

Request Pricing Add to quote list

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

  • Semiconductor Quantum Hall effect
  • Quantum dots
  • Single electron tunnelling
  • Quantum computing Magneto-resistance
  • Hall effect
  • RF transport high frequency conductivity
  • Solid state physics heavy fermion systems
  • Metal insulator transition
  • Spin glass
  • Mesoscopic systems
  • Giant magnetic resistance Specific heat
  • De Haas-van alphen oscillations
  • Solid state NMR
  • Electrical resistivity
  • Magneto-resistance
  • Neutron scattering
  • Superconductivity low Tc superconductors
  • Quantum computing
  • Josephson junctions
  • Flux vortices
  • Quantum initial phenomena electrical resistivity
  • Scanning spectroscopy (STM/AFM)
  • SQUID characterisation 
  • AC susceptibility
  • Astrophysics & cosmology Low temperature detectors
  • Superconducting tunnel junctions
  • GE bolometers Electrothermal measurements
  • Voltage biased measurements
  • Low energy photon detection
  • Metrology Quantum hall effect
  • Voltage standards
  • Current standards Magneto-resistance
  • DC & AC low frequency transport and magnetic measurements
  • Single electron tunnelling


Spare IVC tail, to suit magnet if required


High temperature thermometry (provided as standard)


MercuryiTC (supplied as standard with HelioxVT) 

You may also be interested in...

Related Applications

Nanomaterial Growth and CharacterisationBattery TechnologyQuantum Information ProcessingQuantum Transport MeasurementCharacterisation of Low Dimensional Structures

Latest news