Properties of a two stage adiabatic demagnetization refrigerator

H. Fukuda; S. Ueda; R. Arai; J. Li; A. T. Saito; H. Nakagome; T. Numazawa

doi:10.1088/1757-899X/101/1/012047

Properties of a two stage adiabatic demagnetization refrigerator

H. Fukuda, S. Ueda, R. Arai, J. Li, A. T. Saito, H. Nakagome, T. Numazawa

Research output: Contribution to journal › Conference article › peer-review

Abstract

Currently, many space missions using cryogenic temperatures are being planned. In particular, high resolution sensors such as Transition Edge Sensors need very low temperatures, below 100 mK. It is well known that the adiabatic demagnetization refrigerator (ADR) is one of most useful tools for producing ultra-low temperatures in space because it is gravity independent. We studied a continuous ADR system consisting of 4 stages and demonstrated it could provide continuous temperatures around 100 mK. However, there was some heat leakage from the power leads which resulted in reduced cooling power. Our efforts to upgrade our ADR system are presented. We show the effect of using the HTS power leads and discuss a cascaded Carnot cycle consisting of 2 ADR units.

Original language	English
Article number	012047
Journal	IOP Conference Series: Materials Science and Engineering
Volume	101
Issue number	1
DOIs	https://doi.org/10.1088/1757-899X/101/1/012047
Publication status	Published - 2015 Dec 18
Externally published	Yes
Event	2015 Joint Cryogenic Engineering and International Cryogenic Materials Conferences, CEC/ICMC 2015 - Tucson, United States Duration: 2015 Jun 28 → 2015 Jul 2

ASJC Scopus subject areas

Materials Science(all)
Engineering(all)

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10.1088/1757-899X/101/1/012047

Cite this

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title = "Properties of a two stage adiabatic demagnetization refrigerator",

abstract = "Currently, many space missions using cryogenic temperatures are being planned. In particular, high resolution sensors such as Transition Edge Sensors need very low temperatures, below 100 mK. It is well known that the adiabatic demagnetization refrigerator (ADR) is one of most useful tools for producing ultra-low temperatures in space because it is gravity independent. We studied a continuous ADR system consisting of 4 stages and demonstrated it could provide continuous temperatures around 100 mK. However, there was some heat leakage from the power leads which resulted in reduced cooling power. Our efforts to upgrade our ADR system are presented. We show the effect of using the HTS power leads and discuss a cascaded Carnot cycle consisting of 2 ADR units.",

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AU - Fukuda, H.

AU - Ueda, S.

AU - Arai, R.

AU - Li, J.

AU - Saito, A. T.

AU - Nakagome, H.

AU - Numazawa, T.

PY - 2015/12/18

Y1 - 2015/12/18

N2 - Currently, many space missions using cryogenic temperatures are being planned. In particular, high resolution sensors such as Transition Edge Sensors need very low temperatures, below 100 mK. It is well known that the adiabatic demagnetization refrigerator (ADR) is one of most useful tools for producing ultra-low temperatures in space because it is gravity independent. We studied a continuous ADR system consisting of 4 stages and demonstrated it could provide continuous temperatures around 100 mK. However, there was some heat leakage from the power leads which resulted in reduced cooling power. Our efforts to upgrade our ADR system are presented. We show the effect of using the HTS power leads and discuss a cascaded Carnot cycle consisting of 2 ADR units.

AB - Currently, many space missions using cryogenic temperatures are being planned. In particular, high resolution sensors such as Transition Edge Sensors need very low temperatures, below 100 mK. It is well known that the adiabatic demagnetization refrigerator (ADR) is one of most useful tools for producing ultra-low temperatures in space because it is gravity independent. We studied a continuous ADR system consisting of 4 stages and demonstrated it could provide continuous temperatures around 100 mK. However, there was some heat leakage from the power leads which resulted in reduced cooling power. Our efforts to upgrade our ADR system are presented. We show the effect of using the HTS power leads and discuss a cascaded Carnot cycle consisting of 2 ADR units.

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JF - IOP Conference Series: Materials Science and Engineering

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ER -

Properties of a two stage adiabatic demagnetization refrigerator

Abstract

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