Cryostats

Special Features and Benefits:

• No vacuum pump required for temperatures over 4.2 K
• No heating of exhaust gas required
• Monitoring of flow rate not required
• Easily adaptable to a He recovery system
• Highly flexible transfer line with a minimum 12 in bend radius

Standard configuration includes

• Optical vacuum shroud
• Optical radiation shield
• Four (4) quartz window sets
• Optical sample holder
• Temperature sensor
• Pressure relief valve
• Sample positioner with one (1) 10-pin and one (1) 8-pin electrical feedthrough
• 6 ft superinsulated cryogen transfer line
• Control heater
• System test 

VT-200 INCLUDES:

• Detachable tail Dewar
• Electrical feedthrough port(s)
• Exchange gas manifold
• Safety pressure relief valve
• Temperature sensor
• System test

All SVT Models Include:

• Janis Research SuperVariTemp system
• Top-loading sample positioner
• One (1) 10-pin and two (2) 8-pin electrical feedthroughs
• Safety pressure relief valve
• System test

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 Janis 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

Standard Features:

• Pulse tube or GM cooler
• Cryocoolers with 1 W, 1.2 W, 1.5 W or 2 W cooling at 4.2 K available
• Compact tabletop size
• Adjustable working distance
• Multipin electrical feedthrough
• Control heater and thermometer
• Integrated gas handling system
• Dry scroll pump for gas circulation