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4 K Closed Cycle Refrigerator Systems
Janis
Sample in Vacuum - SHI-4 SeriesJanis 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.
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
• Easily removable window block with o-ring seal located just above the windows (SHI-4-2 and SHI-4-5 systems only)
Available options
• Additional electrical feedthroughs (BNC, SMA, multipin, and others)• Rotatable vacuum shroud
• Rotation and positioning stages
• Matrix isolation configuration
• Fifth window port
• Radiation shield windows
• Specially modified window block with larger window as an option (SHI-4-x)
• 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)
Specifications
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SHI-4-2 |
SHI-4-5 |
SHI-4 |
SHI-4-15 |
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Temperature Range |
<4 K* to 300 K |
<4.5 K to 325 K |
<4 K to 325 K |
<4 K to 325 K |
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Initial Cooldown Time |
<120 Minutes |
~70 Minutes |
60 Minutes to 4 K |
60 Minutes to 4 K |
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Cold Head |
0.13 W @ 4.2 K |
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Cryostat Weight |
36 lbs. |
53 lbs. |
62 lbs. |
63 lbs. |
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Compressor Cooling |
Air or Water |
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* With four open radiation shield ports, f1 view angle. |
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NOTE: 500 K and 800 K versions available on most models.
