KelvinoxTLM

Dilution refrigerator insert system providing top-loading of the sample directly into mixture. 

• Top-loading of the sample directly into the ³He/⁴He mixing chamber ensures good sample thermalisation, high stability of the thermal environment and optimum operation in high magnetic fields
• Multi-service, multi-user access: unique design which can be used with a range of sample probes such as a Swedish rotator or high frequency co-axial lines
• Quick and easy sample change: no need to remove the mixture during sample change, giving quicker experiment turnaround times and reducing the risk of leaks
• Non metallic sample environment: ideal for experiments such as solid state NMR, where removing metallic material surrounding the pickup coil resonant circuit, is key to accurate measurements. Typically, field sweeps of up to 2 T/min leave the temperature of the mixture unaffected
• Delivered with a gas handling system, which enables automatic operation of a dilution refrigerator using sophisticated software and virtual instrument drivers for LabVIEW

Every KelvinoxTLM consists of a dilution unit proividing more than 400 µW at 100 mK measured at the helium mixture phase boundary. This is part of the insert, which features a still pumping line, 1 K pot, diagnostic wiring and inner vacuum can. 

The Kelvinox400HA is made up of a primary insert and a dilution unit. It is compatible with IntegraAC, the recondensing liquid helium cryostat. IntegraAC has been developed to significantly reduce the consumption of liquid helium by recondensing helium gas evaporated within the system, which would otherwise be vented from the cryostat. This decreases the frequency of helium refills. Cryogenic systems can be kept cold continuously, even when in stand-by mode, leading to greater freedom to schedule experimental time.