CEC/ICMC 2025 Abstracts & Technical Program

Session

C4Or1A - Adiabatic Demagnetization Refrigerators

May 22, 2025, 9:30 AM

Conveners

C4Or1A - Adiabatic Demagnetization Refrigerators

• John Weisend (European Spallation Source ERIC (ESS))
• Srini Vanapalli (University of Twente)

393. C4Or1A-01: The first continuous sub-millikelvin refrigerator

Prof. Hiroshi Fukuyama (Cryogenic Research Center, The University of Tokyo)

5/22/25, 9:30 AM

Contributed Oral

Sub-millikelvin (sub-mK) temperatures, or even lower, were first achieved in 1956 by adiabatic demagnetization cooling of nuclear spins in copper [1]. Since then, the use of such extremely low temperatures has long been limited to researchers in fundamental science such as superfluid 3He and nuclear magnetism [2]. In general, lowering temperature have their own advantages, e.g., improved...

264. C4Or1A-02: Space-oriented adiabatic demagnetization refrigerator adapted for quantum applications

Mrs Adele Leon (Univ. Grenoble Alpes, CEA, IRIG-DSBT, 38000 Grenoble, France)

5/22/25, 9:45 AM

Contributed Oral

Adiabatic demagnetization refrigeration (ADR) is an efficient and reliable cooling technology well used for temperatures below 1 K. It is particularly well suited for space applications, thanks to the absence of fluid refrigerant and of moving parts and to a competitive Carnot efficiency. A multi-ADR cooler, that is the last stage of a cryogenic chain, is proposed for the LiteBIRD and Athena...

352. C4Or1A-03: Research on temperature control of Adiabatic Demagnetization Refrigerators

Mr Peng Zhao (Technical Institute of Physics and Chemistry, Chinese Academy of Sciences; University of Chinese Academy of Sciences)

5/22/25, 10:00 AM

Contributed Oral

In astronomical observations, detectors operating in the sub-Kelvin temperature range require extremely stable working temperatures. Adiabatic demagnetization refrigerators (ADR), as the sub-Kelvin refrigerator that is independent of gravity and offers high temperature control precision, have become the preferred choice for astronomical observation missions. The high temperature control...

223. C4Or1A-04: Design and performance testing of the 3-stage ADR

Ms Yanan Li (Technical Institute of Physics and Chemistry,Chinese Academy of Sciences)

5/22/25, 10:15 AM

Contributed Oral

As an important sub-Kelvin refrigeration technology, the adiabatic demagnetization refrigeration (ADR) is used for space detector cooling and ground-based experiments because of its wide temperature coverage, high efficiency and gravity-independence. We design a 3-stage adiabatic demagnetization refrigerator pre-cooled by a GM-type pulse tube cooler and operating from 4 K to 50 mK. Gadolinium...