LiteBIRD deep-freezes telescopes to probe the genesis of our universe
Categorie(s) : Innovation & Society, News, Research
Published : 1 December 2020
Researchers from Irig are working on the international LiteBIRD space observation satellite project. They have been tasked with developing a cold machine that can deliver 2 microwatts at 100 mK—a level of performance never before achieved in space. The cold machine will be used on the two telescopes in the payload.
The researchers have opted for a four-stage magnetic refrigeration machine that is well-suited to the demands of space. Variations in a magnetic field are applied to a magnetocaloric material to produce cold. The researchers developed and patented a new magnetocaloric material, ytterbium gallium garnet, which offers unparalleled energy density. The design phase should be completed by the end of 2021.