Part of the Oxford Instruments Group

IntegraAC - recondensing helium magnet system

The IntegraAC range of recondensing helium systems has been developed to significantly reduce the consumption of liquid helium by recondensing helium gas evaporated within the system, this minimises running costs and conserves this limited resource. It is also compatible with a wide range of superconducting magnets.

  • Zero helium consumption (depending on operating mode) 

  • Temperature range from 1.5 to 300 K using variable temperature insert (VTI)

  • Compatible with existing ultra-low temperature inserts

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Our range of helium recondensing dewars combined with our range of wet superconducting magnets is an alternative to using cryogen free magnets (or dry magnets). Not only do they minimise running costs and maximise experimental time but they also enable the most demanding magnet designs.

  • Wide range of temperatures from 1.5 to 300 K, depending on the variable temperature insert
  • Significantly reduces helium consumption and frequency of refills
  • Compatible with all the standard range of dilution refrigerators, 3He inserts, VTI and superconducting magnets. This means you won't have to disrupt your experiments when you are upgrading your existing dewar
  • Optimised, low loss, high temperature superconductor current leads as standard
  • The cryostat can be kept cold continuously which minimises the costs associated with cooling a sample

Oxford Instruments has unrivalled experience in the design of high field helium recondensing magnet systems. Recent installations in China, Japan and Australia have further strengthened the market acquired by us, working closely with key institutes in Europe and the United States. Oxford Instruments has been selected to supply a new neutron scattering magnet to the China Advanced Research Reactor (CARR). We have also supplied a state-of the-art high field magnet recondensing dewars to Diamond Light Source. 

Click here to read a case study from ISIS highlighting the delivery of OI magnets.


  • Semiconductors 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


Variable Temperature Inserts, Sample Holders

Lamdba point refrigerators available for 2.2K magnet operation 

Gas recirculation kit for recovery and recondensation of insert helium pump exhaust 

Further dewar options are available through custom designed magnet systems -  please contact us for details 

Related Applications

Nanomaterial Growth and CharacterisationCharacterisation of Low Dimensional Structures