Standard Configuration

The Janis JDry series provides convenient and affordable cooling of samples and devices to temperatures ~10 mK, with cooling power greater than 400 µW at 100 mK. The system uses a pulse-tube mechanical cryocooler, eliminating the need for liquid cryogens. Based on the modular Janis JDR technology, the JDry series brings a new level of simplicity and reliability to research applications requiring mK temperatures.

Standard Features

• Standard pulse-tube pre-cooling to 3 K – no cryogens required
• Manually actuated mechanical heat-switch
• Mixture condensing with built-in JT stage at pressure <1 bar absolute – no compressor required
• Standard JDR CORE installed into standard vacuum enclosure
• Resistive temperature sensors installed on all stages with proper wiring and heat-anchoring, including Janis
• Resistive Sensor (JRS1000) calibrated down to 10 mK
• Automated gas handling system (GHS2) with oil-free pumps, electromagnetic valves, cRIO controller, color touch-panel and integrated LSCI 370S Resistance Bridge
• 32 shielded manganin wires in twisted pairs, installed and thermally anchored for experimental applications
• Optimized 3He-4He mixture included

Options

•  Various models of vapor-shielded helium dewars, including superefficient
• Top- or bottom-loading superconducting magnets, including vector and split-magnets
• Helium-cooled or cryogen-free superconducting magnets
• Automated heat-switch with step-motor driver
• Manual Gas Handling Systems GHS1
• 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
• Remote motor

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