LTR Helium Flow Cryostat


The LTR is specifically designed for X-band EPR, and ESR measurements. The sample is cooled by a jet of liquid helium inside a quartz cuvette. We offer glassware designed to fit into the Bruker cavity, as well as Varian and JEOL glassware sets.

LTR benefits from some of the features that set the ARS manufactured LT3 cryostats apart from all other flow cryostats, including the coaxial shield flow transfer line and impedance valve.




Typical Configuration






Options & Upgrades

  • Glassware to fit into Bruker cavity
  • Bruker cavity adapter
  • Mounting arrangement for Bruker magnet
  • Liquid helium flow
  • Co-axial shield flow transfer line
  • 4.2 K liquid helium operation
  • 0.75 LL/hr liquid helium consumption at 4.2 K
  • Precision flow control
  • Fully customizable


  • Cold head (LTR)
  • Co-axial shield flow liquid helium transfer line
  • Stainless steel instrumentation skirt
  • Dewar adapter
  • Flow meter panel for helium flow control and optimization
  • Bruker cavity sdapter
  • Glassware to fit into Bruker cavity
  • Instrumentation for temperature measurement and control:
    • 10 pin feedthrough
    • 36 ohm thermofoil heater
    • Gold Chromel thermocouple for temperature control
    • Gold Chromel thermocouple for accurate measurement
  • Temperature controller