Products

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.

Features

• Pulse-tube precooling to 4 K; no cryogens required.
• Standard DR stage with demountable plates.
• Convenient size - no need for a pit or high ceilings; large sample space.
• Resistive thermometers installed on all stages, with wiring to LCSI 370S resistance bridge (includes demo LabVIEW7 control program), optional CMN and FPD thermometry down to 8 mK.
• 32 manganin wires in twisted pairs, installed and thermally anchored for connection to experimental applications. (Shielded wires and semi-rigid cables are optional.)
• Choose between manual and automated gas handling system with analog pressure gauges, digital vacuum and flow meters (including RS-232C) (includes demo LabVIEW7 control program).
• Dry and conventional Roots and turbo pumping stations.
• Optimized ³He-⁴He mixture included.

Options

• Cryogen-free superconducting mangets.
• Helium-cooled superconducting magnets.
• Automated gas handling system: PLC/PAC controlled with miniature solenoid valves, all digital gauges and pump motor starter. Provides full system control from integrated 12" touch-screen panel, or via RS-232C/Ethernet computer interface in LabVIEW environment.
• Larger 1 W @ 4.2 K pulse tube refrigerator, air-cooled compressor, longer flexible gas lines for locating the compressor remotely.
• Alternative mixture circulation systems.
• Low frequency, high frequency wiring (fully wired with twisted pairs, micro-coax or semi-rigid).
• Self-calibrating thermometry system with CMN paramagnetic thermometer (5 - 1000 mK), superconducting fixed point device (FPD), and LCR meter for readout.
• Additional thermometers including RuO2, Matsushita or Speer resistive devices.
• Integrated superconducting solenoid, conductively cooled.
• Optical access.
• External LN₂ cooled trap.
• Still isolation gate valve, longer interconnecting lines.

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