Advanced Research Systems

Open Cycle Cryostat - Ultra High Vacuum ( UHV )

The ARS manufactured LT3B Helitran® is a True UHV cold head (10-11 Torr) where all of the rubber o-ring seals have been replaced with welded joints and metal seals.

The combination of True UHV and angstrom level vibrations makes the LT3B ideal for low temperature STM applications.

For UHV surface science where very long cold fingers are required we have the LT3M with customizable length up to 1200mm and rigid support tube to allow for cleaving and manipulation.


ARS Helitran Advanced Features
tn3.5.Helitran Features (4pg).pdf
Adobe Acrobat Document 299.2 KB



Helitran LT-3B UHV


  • UHV
  • STM
  • Surface Science


  • True UHV (10-11 Torr)
  • Bakeable
  • Open Sample Space
  • Optional Cold Tip Extensions
  • Liquid Helium Flow
  • Angstrom Level Vibrations
  • Precision Flow Control
  • Exhaust Heater
  • Operation in Any Orientation
  • Fully Customizable
  • Co-axial Shield Flow
  • Matrix Heat Exchanger for High Cooling Efficiency
  • 4 K Liquid Helium Operation (1.7 K With Pumping)
  • 0.7 LL/hr Liquid Helium Consumption at 4.2K
  • Liquid Nitrogen Compatible (77 K Operation)
ARS Helitran LT-3B UHV Flow Cryostat
lt-3b uhv.pdf
Adobe Acrobat Document 173.6 KB

Helitran LT-3M UHV Manipulator


  • UHV - XYZ Manipulation and Rotation
  • Surface Science
  • Photo Emission Spectroscopy (PES)
  • Photoemission Electron Microscope (PEEM)
  • 1200mm Customizable Length
  • 4.8" Rotational Footprint
  • True UHV (10-11 Torr)
  • Bakeable
  • Open Sample Space
  • 4 K Liquid Helium Operation (1.7 K With Pumping)
ARS LT-3M Helitran Manipulator Cryostat
Lt-3M UHV Manipulator.pdf
Adobe Acrobat Document 343.2 KB