Experimental Energy Loss Analysis of the SMB-Based Rotation Mechanism Below 10 K
We present the experimental characterization of energy loss in a rotation mechanism using a superconducting magnetic bearing (SMB), designed for the polarimeter of a cosmic microwave background polarization experiment. The design specification aims to achieve mW-level heat dissipation at 5 K with a rotation speed of 46 rpm. We estimated the heat dissipation from the SMB-based rotation mechanism, constructed a loss-mechanism model, and narrowed down the causes of the loss. The results indicate that the loss is predominantly caused by eddy currents in the drive mechanism.
Authors
- Y. Sakurai (ORCID: https://orcid.org/0000-0001-6389-0117)
- C. Leloup (ORCID: https://orcid.org/0000-0003-1428-0114)
- Hiroyuki Ohsaki (ORCID: https://orcid.org/0000-0003-0539-112X)
- Ryota Takaku (ORCID: https://orcid.org/0000-0001-8754-8594)
- Teruhito Iida
- T. Matsumura
- Satsuki Okumura
- D. Hoang (ORCID: https://orcid.org/0000-0002-3437-5228)
- Ryosuke Akizawa
- Asuka Maeda
- Jun Nakagawa (ORCID: https://orcid.org/0000-0002-9121-6995)
- Yutaka Terao (ORCID: https://orcid.org/0000-0002-5760-0010)
- Mitsuharu Kusama
- Kosuke Aizawa
- Ryota Uematsu
Institutions
- Nagano University (JP)
- University of Minnesota (US)
- High Energy Accelerator Research Organization (JP)
- Minami Kyushu University (JP)
- Okayama University (JP)
- Twin Cities Orthopedics (US)
- Kavli Institute for the Physics and Mathematics of the Universe (JP)
- Advanced Engineering Services (Japan) (JP)
- Suwa Red Cross Hospital (JP)
- The University of Tokyo (JP)
Publication Details
- Journal
- IEEE Transactions on Applied Superconductivity
- Published
- 2024-12-20
- DOI
- https://doi.org/10.1109/tasc.2024.3520543
- Citations
- 1
- Primary Topic
- Engineering Applied Research
- Type
- article
- Field-Weighted Citation Impact
- 0.26