Cryostats

1.5 K cryocooler features

  • Top-loading static helium thermal exchange gas configuration
  • Pulse tube closed-cycle cryocooler design allows nearly unlimited unattended operation
  • Independent recirculating helium gas loop cools the sample chamber to 1.5 K without the use of liquid helium
  • Choice of cryocooler to match performance and budget requirements
  • Optimized for two-loop temperature control. Helium thermal exchange gas is heated and controlled by one heater and calibrated silicon diode, while a second heater and sensor on the sample mount enable rapid temperature sweeps and precise sample temperature control.
  • Sample is accessed by removing the top-loading sample positioner
  • Four orthogonal sets of windows can be used in either transmission or reflection geometry (PTSHI-950-LT)
  • Non-optical tails (PTSHI-950T-LT)
  • O-ring sealed ports accept DC and RF electrical feedthroughs
  • Optional DC and RF wires and cables for electrical measurements

4 K cryocooler features

  • Top-loading static helium thermal exchange gas configuration
  • Closed-cycle cryocooler design allows nearly unlimited unattended operation
  • Choice of cryocooler to match performance and budget requirements
  • Optimized for two-loop temperature control—helium thermal exchange gas is heated and controlled by one heater and calibrated silicon diode, while a second heater and sensor on the sample mount enable rapid temperature sweeps and precise sample temperature control
  • Sample is accessed by removing the top‑loading sample positioner
  • Four orthogonal sets of windows can be used in either transmission or reflection geometry (SHI-950-XX)
  • Non-optical tail can be inserted into the pole gap of an electromagnet or into a room temperature bore superconducting magnet (SHI-950T-XX)
  • Non-optical tail fabricated from either thin-walled aluminum or vanadium for use in neutron applications (SHI-950T-NEUTRON-XX)
  • O-ring sealed ports accept DC and RF electrical feedthroughs
  • Optional DC and RF wires and cables for electrical measurements

10 K cryocooler features

  • Top-loading static helium thermal exchange gas configuration
  • Closed-cycle cryocooler design allows nearly unlimited unattended operation
  • Choice of cryocooler to match performance and budget requirements
  • Optimized for two-loop temperature control; helium thermal exchange gas is heated and controlled by one heater and calibrated silicon diode, while a second heater and sensor on the sample mount enable rapid temperature sweeps and precise sample temperature control
  • Sample is accessed by removing the top‑loading sample positioner
  • Integrated pneumatically isolated support stand minimizes line broadening due to sample vibrations
  • O-ring sealed ports accept DC and RF electrical feedthroughs
  • Optional DC and RF wires and cables for electrical measurements

SuperTran features

  • No vacuum pump is required for temperatures over 4.2 K
  • No heating of exhaust gas required
  • Monitoring of flow rate is 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 quartz window sets
  • Optical sample holder
  • Calibrated temperature sensor
  • Pressure relief valve
  • Sample positioner with one 10-pin and one 8-pin electrical feedthrough
  • 6 ft superinsulated cryogen transfer line
  • Control heater
  • System test

All SVT cryostats Include:

  • SuperVariTemp system
  • Top-loading sample positioner
  • One 10-pin and two 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 SuperVariTemp system, with an optional calibrated temperature control sensor 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 are available
  • Compact tabletop size
  • Adjustable working distance
  • Multipin electrical feedthrough
  • Control heater and thermometer
  • Integrated gas handling system
  • Dry scroll pump for gas circulation

VNF Series features:

  • Quick refill capability with included funnel assembly 
  • High-quality bellows-sealed evacuation valve and a built-in cryopump for maintaining high vacuum
  • Safety pressure relief valves protecting all independent spaces
  • 1.25 in diameter sample tube with customer-specified optical access (standard system offers four quartz window pairs with f = 1.0 optical access to the sample space)
  • Top-loading sample chamber for rapid sample exchange
  • Variable cooling system that places the sample in flowing N2 vapor (ideal for low thermal conduction samples), providing excellent cooling power and temperature control
  • Lightweight sample positioner/mount assembly, with multi-pin electrical feedthrough access to the window region, offering rotation and translation around the cryostat axis
  • Two silicon diodes installed on the vaporizer (heat exchanger) and sample mount for controlling and monitoring the system temperature

VPF Series features:

  • Fused quartz windows
  • 4-way optical access (f = 1.0)
  • Silicon diode sensor and heater (thermocouple for VPF-800)
  • Electrical feedthrough for thermometry
  • Optical sample holder
  • Refill assembly for continuous operation
  • Complete system test
We appreciate your patience while we rebuild our online shopping portal. Please contact us directly to place an order.