Abstract: A refrigeration system comprising: a rod and a refrigeration unit that comprises a first thermal screen which at least partially defines a first thermal chamber and a second thermal screen which is located inside the first chamber and which is provided with means for thermally connecting the receiving space to the second thermal screen; wherein the first thermal screen comprises a first opening through which the rod passes, and the refrigeration unit comprises a first thermalization member that is arranged to selectively thermally connect a first portion of the rod to the first thermal screen. The invention also relates to a method for loading such a refrigeration system.

Abstract: Cryogenic refrigeration device comprising an enclosure delimiting a sealed space closed by a cover, the device comprising at least one cryogenic cooler mounted through the cover and having a first end located outside of the enclosure and a second end located inside the enclosure, the cryogenic cooler being configured to produce cold at the second end thereof, the device comprising a set of heat-conducting plates which are arranged inside the enclosure and form thermal stages cooled by the cryogenic cooler, the device comprising a set of passages formed through the cover and plates for the sealed passage of one or more cables and/or equipment into the enclosure, characterised in that at least one part of the cover comprises a flange forming a support for the cryogenic cooler, wherein said flange bearing the cryogenic cooler is attached in a sealed manner and is removable from the remainder of the cover.

Abstract: Dilution refrigeration device comprising a working circuit comprising a mixture of helium-3 isotope (3He) and helium-4 isotope (4He), the working circuit comprising a mixing chamber, a boiler and a transfer member, the circuit connecting an outlet from the mixing chamber to an inlet of the boiler and an outlet of the boiler to an inlet of the transfer member, and configured to connect an outlet from the transfer member to an inlet of the mixing chamber, the device further comprising at least one cooling member in heat exchange with the working circuit, the at least one cooling member comprising a cryogenerator, the device comprising a support member, a fluid-tight enclosure, an open end of the enclosure being mechanically connected to the support member via a flexible fluid-tight bellows, an upper end of the cryogenerator being secured to the support member, the device further comprising a fluid-tight sheath which is received in the enclosure, a lower end of the cryogenerator extending in the sheath inside th

Abstract: Disclosed is a dilution refrigeration device comprising a working circuit, a mixing chamber, a still and a transfer component, a circuit configured to connect an outlet of the mixing chamber to an inlet of the still and an outlet of the still to an inlet of the transfer component, the circuit also being configured to connect an outlet of the transfer component to an inlet of the mixing chamber, the device further comprising at least one cooling component in thermal exchange with the working circuit, the at least one cooling component comprising a cryogenerator, the device comprising a support, a sealed enclosure, with an open end of the enclosure being mechanically connected to the support via a sealed flexible bellows, an upper end of the cryogenerator being fixed on the support, the device further comprising a sealed sheath housed in the enclosure, a lower end of the cryogenerator extending into the sheath inside the bellows so that the enclosure and the sheath are at least partially mechanically isolated f