We developed a cryogenic system on a rotating table that achieves sub-Kelvin conditions. The cryogenic system consists of a helium sorption cooler and a pulse tube cooler in a cryostat mounted on a rotating table. Two rotary-joint connectors for electricity and helium gas circulation enable the coolers to be operated and maintained with ease. We performed cool-down tests under a condition of continuous rotation at 20 rpm. We obtained a temperature of 0.23 K with a holding time of more than 24 h, thus complying with catalog specifications. We monitored the system's performance for four weeks; two weeks with and without rotation. A few-percent difference in conditions was observed between these two states. Most applications can tolerate such a slight difference. The technology developed is useful for various scientific applications requiring sub-Kelvin conditions on rotating platforms.
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August 2014
Brief Report|
August 01 2014
Note: Sub-Kelvin refrigeration with dry-coolers on a rotating system
S. Oguri;
S. Oguri
a)
1
Institute of Particle and Nuclear Studies
, High Energy Accelerator Research Organization (KEK), Oho, Tsukuba, Ibaraki 305-0801, Japan
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H. Ishitsuka;
H. Ishitsuka
2Department of Particle and Nuclear Physics, School of High Energy Accelerator Science,
The Graduate University for Advanced Studies (SOKENDAI)
, Shonan Village, Hayama, Kanagawa 240-0193, Japan
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J. Choi;
J. Choi
3Department of Physics,
Korea University
, Anam-dong Seongbuk-gu, Seoul 136-713, South Korea
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M. Kawai;
M. Kawai
1
Institute of Particle and Nuclear Studies
, High Energy Accelerator Research Organization (KEK), Oho, Tsukuba, Ibaraki 305-0801, Japan
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O. Tajima
O. Tajima
1
Institute of Particle and Nuclear Studies
, High Energy Accelerator Research Organization (KEK), Oho, Tsukuba, Ibaraki 305-0801, Japan
2Department of Particle and Nuclear Physics, School of High Energy Accelerator Science,
The Graduate University for Advanced Studies (SOKENDAI)
, Shonan Village, Hayama, Kanagawa 240-0193, Japan
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a)
Author to whom correspondence should be addressed. Electronic mail: shugo@post.kek.jp
Rev. Sci. Instrum. 85, 086101 (2014)
Article history
Received:
May 29 2014
Accepted:
July 17 2014
Citation
S. Oguri, H. Ishitsuka, J. Choi, M. Kawai, O. Tajima; Note: Sub-Kelvin refrigeration with dry-coolers on a rotating system. Rev. Sci. Instrum. 1 August 2014; 85 (8): 086101. https://doi.org/10.1063/1.4891618
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