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      Development of a sub-mK Continuous Nuclear Demagnetization Refrigerator

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          Abstract

          We present the development of a two-stage PrNi\(_5\) continuous demagnetization refrigerator at the Institut N\'{e}el/CNRS and numerical simulations of its performance. The thermal model used in the simulations is discussed in detail including the likely sources of heating. We demonstrate the effects of the critical thermal links including superconducting heat switches as well as the heat conductivity of the PrNi\(_5\), accounting for the dependence of cooling power on the PrNi\(_5\) rod diameter. Our simulations show that if extreme care is taken to minimize the thermal resistance between the nuclear stages, a sample temperature of 1~mK can be maintained under a 20~nW heat load.

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          Development of a cryogen-free continuous ADR for the constellation-X mission

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            Electrical Conductance of Bolted Copper Joints for Cryogenic Applications

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              Author and article information

              Journal
              20 September 2018
              Article
              1809.07670

              http://arxiv.org/licenses/nonexclusive-distrib/1.0/

              Custom metadata
              physics.ins-det cond-mat.other

              Condensed matter, Technical & Applied physics

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