2014年9月11日 · Goddard began work on the first space-based Adiabatic Demagnetization Refrigerator (ADR) in 1979. The ADR developed by Goddard is a heat pump that operates between liquid helium temperature and very low temperatures. Goddard developed an ADR for the X-Ray Spectrometer (XRS) to cool detectors to …

2023年11月2日 · This refrigerator is the first Chinese multi-stage ADR that can reach a temperature under 50 mK, which lays an important foundation for subsequent research on continuous adiabatic demagnetization refrigeration.

2015年5月7日 · An Adiabatic Demagnetization Refrigerator (ADR) works by using the properties of heat and the magnetic properties of certain molecules. Some molecules have large internal magnetic fields, or "moments". Just like a tiny bar magnet, these molecules will align themselves with an external magnetic field.

2024年6月1日 · Adiabatic demagnetization refrigerator based on the magneto-thermal effect plays an important role in many sub-Kelvin applications such as space exploration and ground-based research. The typical ADR consists of a salt pill located in the bore of a superconducting magnet, a heat switch and suspensions [1].

1 天前 · It stores the heat that it absorbs, both heat from cooling warm objects and heat that leaks in. The part of the ADR that stores the heat is called the "salt pill". This name sounds like something you'd take to avoid heat exhaustion, but in fact it doesn't necessarily look like a pill and is not made of table salt.

- Widely used in cryogenics laboratory until being replaced by dilution refrigerator (continuous cooling, high cooling power…) - Other technique : nuclear demagnetization refrigerator : provides µK cooling, not

2014年9月11日 · The Adiabatic Demagnetization Refrigerator (ADR) is a cyclic cooling system. It alternates between two states. In the operating state, it cools down and absorbs heat. In the diagram below, it's cooling some detectors. (The ADRs we build, such as the one for the X-Ray Spectrometer (XRS) mission, are used cool sensors used for astronomy.)

2016年3月3日 · Adiabatic demagnetization refrigerators (ADRs) are an alternative to DR and often available in ‘one shot’ versions. We present here the design and testing of an ADR system providing two levels of continuous temperature at 1–1.2 K and 50–200 mK.

2022年5月1日 · Adiabatic demagnetization refrigerator (ADR) is a good candidate for milli-Kelvin cooling system. Here we introduce our recent work on ADR design and construction. Most of the key components for building an ADR have been designed and fabricated.

The design of a multi-stage adiabatic demagnetization refrigerator (ADR) that can provide continuous cooling at very low temperatures is presented. The ADR is being developed for use in x-ray, IR and sub-millimeter space astronomy missions which will employ large format detector arrays operating at 50 mK and lower and which may dissipate up to ...