SKM 2023 – wissenschaftliches Programm

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MA: Fachverband Magnetismus

MA 13: Focus Session: New Perspectives for Adiabatic Demagnetization Refrigeration in the Kelvin and sub-Kelvin Range (joint session TT/MA)

MA 13.4: Hauptvortrag

Dienstag, 28. März 2023, 11:15–11:45, HSZ 03

ADR cryostats in low temperature physics and their applications — •Doreen Wernicke — Entropy GmbH, Gmunder Str. 37a, 81379 München

Entropy GmbH is a company founded in 2010 in Munich, Germany, specializing in the development and manufacture of low temperature cryostats. All Entropy cryostats are based on closed-cycle pre-cooling to temperatures below 3K. Further cooling stages such as ADR units, Joule-Thomson stages, and dilution refrigerators including electronics and software are proprietary developments. The modular design of all cryostats offers the possibility of adaptation to many different experiments and applications. One of Entropy's most common products are the ADR cryostats. The presentation will explain the principle of ADR cooling and features such as base temperature and holding time at operating temperature. Applications for low temperature device operation such as various types of superconducting detectors (TES, MKIDs, SQUIDs, SNSPDs) and Qubit characterization will be presented to demonstrate the performance and limitations of adiabatic demagnetization refrigeration.