DRY ICE 1.5K HIGH COOLING POWER VTI
The ICEoxford DRYICE1.5K High Cooling Power VTI enables users to perform experiments in temperature ranges below 1.5K and up to 800K. Additional 3He and Dilution fridge inserts available to achieve lower temperatures of 280mK and 10mK respectively.
The cryostat is a closed-loop system and offers excellent temperature stability, fast cool downtimes, low vibration at sample space and a choice of magnets to suit the experimenter’s field of research.
The system utilises either a GM or PTR cryo-cooler technology. For reduced vibrations, the cryo-cooler sits supported within a sock which separates the system's two cold-head from the cryostat. ICEoxford has also developed other methods to further reduce vibration levels.
Our patented Dual-Cool technology is included which allows the system to switch between static and dynamic exchange gas mode for sample cooling. This gives the benefit of faster sample cooldown, whilst minimising blockages during long-term operation.
High field superconducting magnets are designed to be an integral part of these systems and we offer a wide range of solenoid, split-pair and vector rotate magnets up 18 Tesla.
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Temperature range |
1.4K-325K (420K and 800K options) |
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Cooling power |
50mW @ 1.5K, 150mW @ 2K |
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Temperature Stability |
±10mK below 10K, ±20mK between 10-50, ±50mK between 50-100K, ±100mK for temperatures ≥100K |
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Sample environment |
Vacuum or Exchange Gas (Dynamic/Static available) |
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Sample space |
D. 100mm L. 100mm |
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Vibration at sample |
options for ±1000nm, ±500nm or ±100nm with anti-vibration options |
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Cool down time to 1.4K |
60 minutes |
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Compressor |
Air or water cooled options available |
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Wiring |
DC, RF and fiber optic options available |
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Optical access |
Multiple windows available (see window materials) |
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Base temperature |
From 1.4K |
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Hold time |
N/A |
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Temperature controller |
Lakeshore 336 as standard (Other controllers available on request) |
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Magnetic Field |
John Durrell - Cambridge University
You have asked if I could set down my assessment of this system now that it has been in service for six months. I should add that this is my personal professional opinion as a researcher and does not in any way constitute a formal endorsement of ICEoxford or its products by the University.
Im very pleased to be able to say that I am very satisfied with this system. In particular, the dual cooler configuration provides plenty of cooling power, which was my primary concern going to a conduction cooled system for such a large volume. As an example of this, we have found that a very high heat leak probe with copper 100A leads will cool to below 20K overnight just in static mode.
The magnet appears to be very well behaved and, after a couple of quenches, reliably achieves within 0.003T of the rated field. We have not conducted extensive checks of homogeneity, but it would appear that the system easily meets the tender specification.
I have also been impressed with the supplied ancillaries, which are from high quality manufacturers and it is clear that corners have not been cut in fitting this system out.
The inevitable minor snags in such a custom system were promptly and professionally cleared up by your excellent team, and the system is now being heavily used by users both within and outside the university.
Many thanks again for all your assistance with this project.
