LHe and LN₂ cryostats

SuperTran cryostat features

  • <2 K to 500 K (700 K option) operating range (model dependent)
  • Easily adaptable to an  RGC4 recirculating gas cooler for cryogen-free operation
  • Can use either LHe or LN2
  • Sample-in-vacuum configuration
  • Variable temperature sample mount and holder, with temperature regulated with a calibrated sensor and external temperature controller for precise sample temperature control
  • Can be fitted with optical or non-optical tails
  • The optical version has 4 window sets for measurement from UV to IR
  • Optional cabling for electrical measurements
  • Choice of cryocooler to match performance and budget requirements
  • FTIR, ESR, NMR, microscopy, compact, and ultra-high vacuum models are available
  • Highly flexible transfer line (12 in bend radius)
  • Easy sample access

SuperTran-VP cryostat features

  • <2 K to 325 K (500 K option) operating range (model dependent)
  • Easily adaptable to an RGC4 recirculating gas cooler for cryogen-free operation
  • Can use either LHe or LN2
  • Sample-in-flowing-vapor configuration
  • Precise dual-loop temperature control (at vaporizer and sample mount) using calibrated silicon diode sensors and external temperature controller
  • Can be fitted with optical or non-optical tails
  • The optical version has 4 window sets for measurement from UV to IR
  • Optional cabling for electrical measurements
  • Choice of cryocooler to match performance and budget requirements
  • FTIR model is available
  • Optional isothermal sample zone provides enhanced operation with LN2
  • Highly flexible transfer line (12 in bend radius)
  • Easy sample access

VPF Series features

  • 32 mm (1.25 in) diameter copper sample mount
  • Control heater and sensor
  • 400 mL LN2 reservoir and fill funnel
  • Thermal impedance displacer with integrated LN2 refill port
  • Temperature range from 77 K (65 K with optional pumping manifold) to 500 K with optional 800 K high temperature
  • Optical vacuum shroud with four 41 mm (1.63 in) diameter clear aperture o-ring sealed fused silica windows
  • Optical sample holder
  • Instrumentation adapter with 10-pin electrical feedthrough, three spare o-ring sealed ports, evacuation valve, and safety pressure relief valve

VNF Series features

  • Top-loading sample-in-flowing-vapor configuration
  • Internal LN2 reservoir with integrated cryopump enables all-day unattended operation
  • Optimized for two-loop temperature control, LN2 is vaporized and temperature controlled with a calibrated silicon diode as it enters the sample chamber; a second heater and sensor on the sample mount are used for rapid temperature sweeps and precise sample temperature control
  • Sample is accessed by opening a single clamp and removing the top-loading sample positioner
  • Continuous temperature range from 65 K to 300 K (500 K optional with VNF-100T)
  • O-ring sealed ports accept DC and RF electrical feedthroughs
  • Optional DC and RF wires and cables for electrical measurements
  • Four optical window ports (f = 1.0) can be used for optical measurements from UV to IR

SuperVariTemp cryostat features

  • <2 K to 300 K operating range (model dependent)
  • Can use either LHe or LN2
  • Sample-in-flowing-vapor configuration
  • Precise dual-loop temperature control (at vaporizer and sample mount) using calibrated silicon diode sensors and external temperature controller
  • Can be fitted with optical or non-optical tails
  • The optical version has 4 window sets for measurement from UV to IR
  • Optional cabling for electrical measurements
  • Choice of cryocooler to match performance and budget requirements
  • NMR model is available
  • Optional isothermal sample zone provides enhanced operation with LN2
  • Highly flexible transfer line (12 in bend radius)
  • Easy sample access

RGC4 Series features

  • All the flexibility and convenience of a continuous-flow cryostat without liquid helium
  • Fast sample change without warming up the RGC4 cooler
  • Excellent thermal performance
  • Low vibration — vibration data available upon request
  • Compatible with most existing SuperTran cryostats
  • Order a new cryostat with a transfer line and choose to operate using LN₂, LHe, or cryogen-free

Standard system features:

  • Top sample loading and exchange at all temperatures
  • Effortless sample rotation and translation about the vertical axis at all temperatures, with options for rotation about a horizontal axis
  • Field-independent thermometry
  • The SuperVariTemp system, with provision for a temperature control thermometer at the heat exchanger
  • Vapor cooled/superconducting high current magnet leads
  • Superconducting magnets with persistent mode operation providing field stabilities of 20 ppm/h
  • Carefully designed magnet support inside the helium reservoir, with optical access through the Dewar vacuum space (OptiMag and SuperOptiMag systems)
  • Built-in superconducting liquid helium level sensors, providing continuous or timed level monitoring
  • Readily accessible and interchangeable sample chambers

Complete systems include:

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