Ice Oxford

DRY ICE 300mK He-3 Cryostat

The ^DRY ICE ^300mK He3 Continuous cryostat is a closed cycle system with the highest cooling powers at 300mK currently on the market. This compact cryostat is customisable to suit your requirements, particularly for large heat load experiments.

The cooler is isolated using flexible bellows to minimise vibration which extends into the cryostat where thermal contact to the rest of the system is obtained by the introduction of exchange gas. There is no mechanical contact to any other part of the system from the cooler.

Using the ICECUBE automatic gas handling system, the flow of gas during cool-down and operation can be controlled.

The system is designed to run continuously at ³He temperatures (below 500mK).

FEATURES

• 300mK - 325K continuous operation
• 500µW cooling power at 400mK
• Less than 12 hour cool down time to <500mK
• ³He pot protected by radiation shield
• Closed cycle operation
• Compact cryostat design

SPECIFICATION

Temperature range	300mK to 325K
Cooling power	58µW at 315mK, 100µW at 320mK, 500µW at 400mK, 2mW at 450mK
Temperature Stability	±5mK below 1K, ±10mK below 10K,  ±20mK between 10-50, ±50mK between 50-100K, ±100mK for temperatures ≥100K
Sample environment	Vacuum
Sample space	D. 300mm as standard (custom sizes available)
Vibration at sample	±20 nm with anti-vibration options (pictured)
Cool down time to <500mK	<24 hours
Compressor	Air or water cooled options available
Wiring	Multiple coax lines - DC, RF and fiber optic options available
Optical access	Multiple windows available (see window materials)
Base temperature	300mK
Hold time	N/A
Temperature controller	Lakeshore 336 as standard (Other controllers available on request)
Magnetic Field	Solenoid, Split pair and Vector magnets available

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