Janis 1.5 K continuous closed cycle refrigerator cryostat

Continuous Closed Cycle Refrigerator Cryostat

A turnkey alternative to liquid helium

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

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 push button 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.

For more information please visit Lake Shore Cryotronics

Standard configuration

PTSHI-950-LT 1.5 K Continuous CCR Cryostat Mechanical Drawing

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. It can be applied to a broad range of applications in both academic research and industrial R&D, including materials research, magnetic measurements, neutron scattering (see the neutron scattering configuration), electrical transport measurements, optical spectroscopy, and spintronics.


  • 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

Shayz Ikram

Product Specialist
tel:+44 (0)1372 378822


Supplier Info

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