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
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