Design and Performance of a Prototype Polarization Modulator Rotational System for Use in Space Using a Superconducting Magnetic Bearing

被引：26

作者：

Matsumura, T. ^{[1
]}

Kataza, H. ^{[1
,2
]}

Utsunomiya, S. ^{[1
]}

Yamamoto, R. ^{[1
,3
]}

Hazumi, M. ^{[4
,5
]}

Katayama, N. ^{[5
]}

机构：

[1] Japan Aerosp Explorat Agcy JAXA, Sagamihara, Kanagawa 2525210, Japan

[2] Univ Tokyo, Dept Astron, Tokyo 1130033, Japan

[3] Univ Tokyo, Dept Phys, Tokyo 1130033, Japan

[4] High Energy Accelerator Res Org KEK, Tsukuba, Ibaraki 3050801, Japan

[5] Univ Tokyo, Kavli Inst Phys & Math Universe, Kashiwa, Chiba 2778583, Japan

来源：

IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY | 2016年 / 26卷 / 03期

关键词：

Polarization modulator; space application; superconducting magnetic bearing;

D O I：

10.1109/TASC.2016.2533584

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

We present the design and the mechanical and thermal performances of a prototype rotational mechanism using a superconducting magnetic bearing (SMB) for a space compatible polarization modulator. The rotational mechanism consists of an SMB with an optical encoder and a three-grip mechanism that holds a levitating rotor until a high-temperature superconducting array (YBCO) cools down below its critical temperature. After the successful operation of a grip mechanism, the rotor magnet levitates at 10-16 K, and we conduct spin-down measurements. We estimate the heat dissipation from the rotor rotation and an optical encoder. From the mechanical and thermal performances of the prototype rotation mechanism, we did not find the potential no-go results from this SMB technology for use in a future space mission. The development of this rotational mechanism is targeting for use of a polarization modulator for a space mission to probe the comic inflation by measuring the cosmic microwave background polarization.

引用

页数：4

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