Our partner Lake Shore Cryotronics environment by Janis

1.5 K Continuous Closed Cycle Refrigerator Cryostat

from Lake Shore Cryotronics

This low vibration pulse tube cryocooler achieves liquid helium performance utilizing cryogen-free technology and a closed-loop system.

  • Temperature range: ~1.5 K to 300 K (500 K optional)
  • Initial system cooldown time: ~9 h to 1.5 K
  • Sample change time: ~80 min
  • Cold head: Pulse tube cryocooler
  • Sample environment: Vacuum or static exchange gas

Further information

Standard Configuration

The Janis Model PTSHI-950-LT 1.5 K continuous closed cycle refrigerator cryostat operates continuously from 1.5 K to 300 K (450 K optional) and is a cryogen-free, turnkey alternative to liquid helium. Featuring pushbutton operation including sample temperature adjustment, this top-loading refrigerator can locate samples in either static exchange gas or vacuum, and users can easily change it while the system is operating.

The system offers rapid sample exchange while the refrigerator is operating. The sample is inserted, via a long rod, into a nearly isothermal region of the gas column for cooling. Sample exchange by simply removing the sample rod, switching samples on the rod, and reinserting the rod into the cryostat. The entire sequence takes ~80 min and is performed while the refrigerator is operating.

Capable of achieving 1.5 K in ~9 h, the Janis Model PTSHI-950-LT 1.5 K continuous closed-cycle refrigerator cryostat has a 50.8 mm I.D. sample chamber (optional to 100 mm) and can be designed to customer specifications. The system allows you to cool samples, devices, and/or equipment without the inconvenience and expense of liquid helium.

Neutron scattering configuration

The Model PTSHI-950-LT can be configured for neutron scattering. Modular tails can easily be exchanged for different experimental requirements.


  • materials research
  • magnetic measurements
  • neutron scattering (see the neutron scattering configuration)
  • electrical transport measurements
  • optical spectroscopy
  • spintronics


The Beginner’s Guide to Cryostats and Cryocoolers


Matthias Müller
Matthias Müller


Quantum Design GmbH

Im Tiefen See 58
64293 Darmstadt

Phone:+49 6151 8806-0
Fax:+49 6151 8806920
Matthias MüllerProduct Manager - Cryogenics & Materials science
+49 6151 8806-554
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