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.
|ジャーナル||IOP Conference Series: Materials Science and Engineering|
|出版ステータス||Published - 2015 12月 18|
|イベント||2015 Joint Cryogenic Engineering and International Cryogenic Materials Conferences, CEC/ICMC 2015 - Tucson, United States|
継続期間: 2015 6月 28 → 2015 7月 2
ASJC Scopus subject areas