4 Kelvin
Closed Cycle Refrigerator Systems
from Janis and SHI

Sample in Vacuum

SHI-4 Series

Janis SHI-4 series cryostats are among the most versatile systems available for laboratory sample cooling.  They are equipped with interchangeable optics, and include provisions for a wide variety of electrical connectors.  Tapped holes on the vacuum shroud and a sturdy mounting flange provide for convenient mounting in any orientation.

These cryostats are designed for measurements to 325 K, and optional configurations permit operation to 500 K or 800 K (with special thermometry).

Optimized for experiments requiring optical access to the sample, these systems include the following components:

• Optical vacuum shroud and radiation shield
• Four o-ring sealed quartz windows
• Gold-plated OFHC copper sample holder
• 10-pin electrical feedthrough, with three spare electrical access ports
• Evacuation valve and safety pressure relief valve
• Silicon diode thermometer and control heater

Available options:

• Additional electrical feedthroughs (BNC, SMA, multipin, and others)
• Rotatable vacuum shroud
• Matrix isolation configuration
• Fifth window port
• Radiation shield windows
• IR and other window materials
• Custom designed vacuum shroud
• 500 K & 800 K high temperature systems available on most models (800 K with special thermometry)
• Non-optical configurations
• Compact vacuum shroud (for use with electromagnets)
• Large sample volume configurations

Standard models include:
("x" indicates the cooling power of the refrigerator)

• SHI-4-x  (Optical)
• SHI-4T-x (Non-optical)
• SHI-4S-x (Sub-compact)
• SHI-4XG-x (Low vibration interface)
• CCR4-MMP (Cryogen-free probe station)

Please click here to view specifications and the mechanical drawing for Sample in Vacuum, Cold Finger Cryostats in the SHI-4 series.