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:

• Programmable magnet power supply with computer interface and bi-polar operation
• Temperature controller with field independent thermometry
• Liquid helium transfer lines
• Cryogenic Hall probe and gaussmeter
• Automatic nitrogen filling mechanism
• Vacuum pumping stations