TY - JOUR
T1 - Properties of a two stage adiabatic demagnetization refrigerator
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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U2 - 10.1088/1757-899X/101/1/012047
DO - 10.1088/1757-899X/101/1/012047
M3 - Conference article
AN - SCOPUS:84959912183
VL - 101
JO - IOP Conference Series: Materials Science and Engineering
JF - IOP Conference Series: Materials Science and Engineering
SN - 1757-8981
IS - 1
M1 - 012047
T2 - 2015 Joint Cryogenic Engineering and International Cryogenic Materials Conferences, CEC/ICMC 2015
Y2 - 28 June 2015 through 2 July 2015
ER -