ST-500-UC Ultra-Compact Optical Cryostat

The Janis ST-500-UC continuous flow cryostat has a very low profile (1.163 in) and has been specifically designed for use in microscopy and imaging applications. The combination of the low thermal-expansion support structure and internal vibration isolation results in low vibration and drift levels. The cryostat geometry offers a short working distance (for use with high magnification optics) between the top window and the sample.

Standard configuration

ST-500-UC Ultra Compact Optical Cryostat Mechanical Drawing

The ST-500-UC system includes a flexible high-efficiency variable flow cryogen transfer line. This line delivers liquid helium or liquid nitrogen to the heat exchanger and sample mount. The ST-500-UC is portable, easily mounted in a variety of configurations, and can be used both in transmission and reflection geometries.

Options include:

  • A variety of window materials and sizes
  • Interchangeable sample mounts for different sample thicknesses
  • Electrical feedthroughs
  • A complete system solution including temperature controllers, pumping systems and storage Dewars
  • Looking for a cryogen-free option for your existing ST-500-UC? Optional recirculating gas cooler eliminates the use of liquid helium for "wet" systems.
Janis — a Lake Shore Company
ST-500UC Ultra-Compact Microscopy Cryostat

ST-500-UC Specifications

Temperature range<6 K (LHe) to 475 K (standard)
Initial cooldown time5 K (LHe): ~30 min
Temperature stability
(with temperature controller)
<50 mK
Minimum distance from objective to sample2.0 mm
Overall height1.163 in (29.54 mm)
(not including transfer line)
5 lb (2.3 kg)
Nominal cryogen useLHe at 6 K: ~2.5 L/h
LHe at 10 K: <0.8 L/h
LHe at 20 K: <0.4 L/h

NOTE: Specifications do not include optical or experimental heat loads and assume horizontal orientation. Specifications may change depending on the length of the transfer line flexible section.