Products

Standard Configuration

SHI-4-1 0.1 Watt 4 K Optical Cryocooler	SHI-4-5 0.5 Watt 4 K Optical Cryocooler	SHI-4 1 Watt Optical 4 K Cryocooler	SHI-4-15 1.5 Watt Optical 4 K Cryocooler
SHI-4T-1 Non-Optical 4 K Cryocooler with Optional Mounting Stand	SHI-4T with Optional 800 K High Temperature Stage	SHI-4ST-1 Sub-compact, Non-optical 4 K Cryocooler	SHI-4XG-5 Low Vibration Interface 4 K Cryocooler
SHI-4T-4 Non-optical 4 K Cryocooler

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.

UPDATE!Janis Research recently redesigned the Model SHI-4-1 0.1 Watt @ 4.2 K closed cycle refrigerator. In the previous design for the SHI-4-1, the customer had to remove the entire vacuum shroud and entire radiation shield to gain access to the sample. This required turning the entire SHI-4-1 on its side or upside-down to change the sample. After listening to customer feedback, Janis Research designed the SHI-4-1 window block to be removable and the radiation shield is demountable in the sample area. This is a significant improvement because the cryostat does not need to be turned on its side or upside down. The mounting stand can remain bolted to the table while the window block and radiation shield bottom are removed for sample change. The customer will not have to realign any optics or beam paths since the cryostat does not have to be moved for the sample change.

Standard Optical (SHI-4-x) Configuration Mechanical Drawing
(Models SHI-4, SHI-4-15, SHI-4-5)

Model SHI-4-1 Standard Optical Cryocooler Mechanical Drawing

Low Vibration Interface (SHI-4XG-x) Configuration Mechanical Drawing
Drawing shows dimensions for the 0.5 W model. Other models are also available.

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
• Rotation and positioning stages
• 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)

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