Standard Dilution Refrigerator Systems


Click on button below to enlarge view of JDR-100 dilution refrigerator system from Janis Research

Janis Research offers a complete line of standardized dilution refrigerator systems.




Standard Configuration

Click on image to enlarge view of JDR-500 dilution refrigerator from Janis ResearchWith a recognized reputation as a world wide leader in custom dilution refrigerator systems, Janis Research Company now offers the following family of standardized dilution refrigerator systems with competitive prices, fast delivery, optimized design, and proven techniques.  The systems can be equipped with either manual or automated gas handling systems, as well as a number of optional items. 

Click on the model name in the Specifications tab to download the mechanical drawing for that model. The downloaded file will be in PDF format which is viewable and printable with Acrobat Reader, a free plug-in utility from Adobe. To download the free acrobat plug-in software click here.

Standard Features

  • Standard Insert into liquid nitrogen-shielded liquid helium dewar
  • Indium-sealed vacuum can with provision for demountable tails
  • Mixture condensing with 1K Pot, equipped with hermetic needle valve
  • Standard DR Stage with demountable plates
  • Resistive temperature sensors installed on all stages with proper wiring and heat-anchoring, including Janis Resistive Sensor (JRS1000) calibrated down to 10 mK
  • LSCI 370S Resistance Bridge with executable Windows program for customer’s lab computer (Labview source included)
  • 32 shielded manganin wires in twisted pairs, installed and thermally anchored for experimental applications
  • Manual gas handling system GHS1 with hermetic Roots pumping stations
  • Optimized 3He-4He mixture included

Optional Features

  • Various models of vapor-shielded helium dewars, including superefficient
  • Top- or bottom-loading superconducting magnets, including vector and split-magnets
  • Automated needle valve with step-motor driver
  • Automated gas handling system (GHS2) with electromagnetic valves, cRIO controller, color touch-panel and integrated LSCI 370S Resistance Bridge
  • Oil-free pumps, including Roots and turbo models
  • Normal and superconducting RF wires in shielded twisted pairs down to mixing chamber
  • High frequency (up to 40 GHz) cables down to mixing chamber
  • Sample-into-vacuum delivery manipulators
  • Self-calibrating CMN and FPD thermometry down to 7 mK with read-out

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Model Name Guaranteed Base Temperature Guaranteed Cooling Power at 100 mK
Model JDR-100 17 mK 100 micro-watt
Model JDR-250 12 mK 200 micro-watt
Model JDR-500 10 mK 400 micro-watt
Model JDR-750 9 mK 500 micro-watt

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Other Configurations

Click image to enlarge view of JDR-100 insert with optional sliding seal installed, Janis Research, dilution refrigerators, cryogenic equipment

JDR-100 with optional sliding seal installed


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