Regenerator for a cryo-cooler with helium as a working gas and as a heat-storing material

A regenerator, comprising:

• a cell that includes a cell wall that encloses a cavity, wherein the cavity includes a first sub-cavity and a second sub-cavity, wherein the first sub-cavity is connected to the second sub-cavity via a connecting passage, wherein a first cell partition is disposed between the first sub-cavity and the second sub-cavity, and wherein the cavity is filled with helium that functions as a heat-storing material during operation of the regenerator;
• a flow passage disposed between the first sub-cavity and the second sub-cavity, wherein helium that functions as a working gas flows through the flow passage during operation of the regenerator;
• a capillary that forms a pressure-equalizing opening in the cell wall and that connects the helium that functions as the heat-storing material inside the cavity to the helium that functions as the working gas outside the cavity;
• and
• a plurality of supporting elements disposed inside the first sub-cavity, wherein the first cell partition is separated from a second cell partition by the supporting elements, wherein the supporting elements brace the first cell partition against the second cell partition, and wherein the first cell partition and the second cell partition enclose the first sub-cavity.