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A new and unique low temperature solution to maximize convenience and minimise support staff costs.
50 mK without the need for liquid helium, gas handling system or pumps !
Additional benefits include :
- No needle valves or impedances, thus no noise from velocity gas flow and stability.
- Using patented and completely self-contained cryogenic gas cycle for leak-free reliable operation.
- Incorporating low vibration pulse tube refrigerator with single phase powered air or water cooled compressor.
- Self-diagnostic computer control with versatile LabVIEW user interface, reduces troubleshooting.
- New, modern look and feel suits modern lab set-up and easier to use.
- FemtoPower thermometry system for accurate temperature control.
- Compatible with Oxford Instruments Cryofree magnet options.
This product is protected by US patent no. 6782712 and several other patents pending including EP1387133, EP1785680, US20070121272 and JP2004163089.
Feedback from Prof. Leonid Kuzmin, Chalmers University of Technology, Göteborg :
“We chose the Triton™DR for our bolometer applications due to the simplicity of its operation. With a regular dilution refrigerator all the pumping, pre-cooling, transferring of liquid helium and nitrogen takes three days of hard work. Instead with the Triton™DR, after pumping of the vacuum space, we need to press just two ‘on’ buttons for the compressor and the control unit. The rest is done automatically and we can establish base temperature the following day. As a result postgraduate students can begin their measurements from the very beginning of their studies, without risk to equipment or themselves. In addition, we overcame the so-called ‘cryofobia’ associated with funding applications involving cryogen costs so now we can more easily compete with non-cryogenic research proposals.”
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Specifications
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System components/options
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Operation
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Applications
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Images
| Base temperature: |
50mK with no applied heat load. |
| Cooling power: |
200µW at 0.4K stage for additional experimental services power dissipation
10mW at 3K stage for additional experimental services power dissipation
Cool down time from room temperature to base temperature: less than 24 hours. |
| Temperature stability: |
+/- 1 mK below 100 mK |
| Sample space on mixing chamber: |
Vacuum environment
Access via standard demountable OVC and radiation shields |
| Sample space size: |
70 mm diameter x 50 mm vertical length volume |
System components:
- TritonDR unit with services - wires, coax and optical cables.
- PTR compressor and He3 dump volume.
- Electronic control unit- based on NI CompactRIO hardware.
- Human Interface - support for local and remote control via PC or laptop.
Options:
- Pump for evacuating OVC.
- Solenoid valves and cylinder to automatically control IVC exchange gas injection.
- Relays to switch ON/OFF PTR compressor.
- Solenoid valves and cylinder to automatically inject warm-up exchange gas.
- LabVIEW function library.
- Installation of equipment.
- OVC and radiation shield options available for optical access, neutron scattering, X ray scattering and independent magnet applications.
- Optional turbo pump for OVC pump out
- PC for monitoring and control
Using a 4 K Pulse tube refrigerator as the cooling platform, the TritonDR utilizes patented technology to cool to < 50 mK.
A reciprocating dual sorption pumped 3He stage cools from 4 K to < 400 mK. While one of the sorbs is cooled and pumps one of the 3He pots, the other is warmed and regenerates its 3He charge ready to switch and maintain continuous cooling.
The 3He stage operating continuously at 400 mK acts as a cryopump circulating the self contained 3He/4He mixture, cooling the mixing chamber < 50 mK.
Having additional cooling at 400 mK allows the interception of heat from experimental services more efficiently than in traditional dilution refrigerators, reducing the need for large footprint, high cooling power inserts. The TritonDR is particularly well suited for experimental regimes dissipating low amount of heat at base temperature but requiring moderate service access to the mixing chamber.
- Quantum Computing
- Detectors
- Neutron scattering