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 journalConference articlepeer-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 languageEnglish
Article number012047
JournalIOP Conference Series: Materials Science and Engineering
Volume101
Issue number1
DOIs
Publication statusPublished - 2015 Dec 18
Event2015 Joint Cryogenic Engineering and International Cryogenic Materials Conferences, CEC/ICMC 2015 - Tucson, United States
Duration: 2015 Jun 282015 Jul 2

ASJC Scopus subject areas

  • Materials Science(all)
  • Engineering(all)

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