Kelvinox400HA

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For applications requiring highcooling power and enhanced service access Components Experimental inserts

Inserts are provided with a range of access ports:- Line-of-sight to mixing chamber –3 off 38 mm line of sight access from room temperature to the mixing chamber through cutouts in the 1 K and still flanges inside the IVC. These are ideal for drive rods, for mechanisms such as Swedish rotators or installation of waveguide or semi- rigid co-axial cable. Spare ports–4 off 12.7 mm diameterfrom the 4 K helium bath to the IVC. These have de-mountable soldered caps. Matching ports are located on the insert top plate for future expansion. These ports are ideal for a 4 K thermal anchoring of low temperature electronics. The Kelvinox400HA is a high performancedilution refrigerator with low base temperature and high cooling power for more demanding experiments. With this increased cooling power comes additional line-of-sight access ports enabling a range of services to the IVC and sample space, particularly suited to quantum computing applications.
Condenser manufacturers 1.2 K Dilution Unit Sample Still 0.7 K Heat ExchangersMixing Chamber

Operation

KelvinoxK400 Gaining access to the sample is made by removing the insert from the cryostat, warming it to room temperature and removing the inner suction chamber (IVC) tail to gain access to the mixing chamber base (Figure 1). Samples are typically mounted on the mixing chamber or on a sample holder fixed to the mixing chamber. To shorten the turnaround time a sliding seal may be fitted to allow rapid pre-cooling of the refrigerator insert and minimising the loss of
Figure 1: Kelvinox400HA principle of operation 4 He.

Creating environments for physical sciencesProduct Guide