Convection (CvH).

The CvH is a convection type, LHe + GHe-cooled pair of current leads. It has, similarly to the CdH, the cold terminal immerged in a bath of liquid helium. In addition, the helium gas generated from the boil-off is funnelled into one or several channels inside the current leads and the gas is used to cool the current leads from the inside. This is a very efficient design compared to the CdH, as it takes advantage of the helium boil-off. This design is used for operating currents ranging from 100-30 kA.

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