Development of cryogenically cooled broadband polarization modualtor to probe the inflationary universe

• Project/Area Number: 15H05441
• Research Category: Grant-in-Aid for Young Scientists (A)
• Allocation Type: Single-year Grants
• Research Field: Astronomy
• Research Institution: The University of Tokyo (2016-2017); Japan Aerospace EXploration Agency (2015)
• Principal Investigator: Matsumura Tomotake 東京大学, カブリ数物連携宇宙研究機構, 特任准教授 (70625003)
• Research Collaborator: KATAYAMA Nobuhiko 東京大学, カブリ数物連携宇宙研究機構, 教授 (50290854) ; SAKURAI Yuki 東京大学, カブリ数物連携宇宙研究機構, 特任研究員 (50780847) ; OHSAKI Hiroyuki 東京大学, 大学院新領域創成科学研究科, 教授 (10203754)
• Project Period (FY): 2015-04-01 – 2018-03-31
• Project Status: Completed (Fiscal Year 2017)
• Budget Amount: ¥23,790,000 (Direct Cost: ¥18,300,000、Indirect Cost: ¥5,490,000); Fiscal Year 2017: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000); Fiscal Year 2016: ¥16,380,000 (Direct Cost: ¥12,600,000、Indirect Cost: ¥3,780,000); Fiscal Year 2015: ¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
• Keywords: インフレーション / 宇宙マイクロ波背景放射 / 偏光観測 / 応用超電導 / 超電導磁気軸受 / レーザー加工 / インフレーション仮説の検証 / 宇宙マイクロ波背景放射偏光観測 / 偏光変調器 / 広帯域反射防止機構 / 低温駆動機構 / 超電導軸受 / 半波長板 / 電波天文学 / 宇宙物理 / 偏光変調機 / 超伝導軸受け

Outline of Final Research Achievements

The theory of inflation is testable by using the measurement of the cosmic microwave background (CMB) polarization. The expected sensitivity for a next-generation CMB polarization experiment is to probe the nano-Kelvin fluctuation. The experimental challenge comes when one has to make a distinction between the signal and the instrumentally induced fluctuation. In order to overcome this challenge, we develop a polarization modulator using a cryogenically cooled continuously rotating broadband half-wave plate. We achieve a broadband anti-reflection by a moth-eye structure and also we build a rotational mechanism using a superconducting magnetic bearing. We characterize its thermal, optical, and kinematic performances experimentally, and demonstrate the applicability of such this system for a next-generation CMB polarization experiment.

Research Products

• [Int'l Joint Research] University of Minnesota, Twin Cities/UC Berkeley/Lawrence National Berkeley Lab(米国)
• [Int'l Joint Research] Universite Paris Diderot(フランス)
• [Int'l Joint Research] Cardiff University(英国)
• [Int'l Joint Research] Laser Zentrum Hannover(ドイツ)
• [Int'l Joint Research] University of Minnesota, Twin Cities/UC Berkeley/Lawrence National Berkeley Lab(米国)
• [Int'l Joint Research] Cardiff University(英国)
• [Int'l Joint Research] Laser Zentrum Hannover(ドイツ)
• [Int'l Joint Research] University of Minnesota, Twin Cities(米国)
• [Int'l Joint Research] Laser Zentrum Hannover(Germany)
• [Journal Article] Estimation of the Heat Dissipation and the Rotor Temperature of Superconducting Magnetic Bearing Below 10 K (2017)
  • Author(s): Y. Sakurai, T. Matsumura, H. Kataza, S. Utsunomiya, and R. Yamamoto
  • Journal Title: IEEE Transactions on Applied Superconductivity Volume: 27 Issue: 4 Pages: 012011-012011
  • DOI: 10.1109/tasc.2017.2672688
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Numerical analysis of fundamental characteristics of superconducting magnetic bearings for a polarization modulator (2017)
  • Author(s): Y. Terachi, Y. Terao, H. Ohsaki, Y. Sakurai, T. Matsumura, H. Sugai, S. Utsunomiya, H. Kataza, and R. Yamamoto.
  • Journal Title: Journal of Physics Conference Series Volume: 871 Pages: 012094-012094
  • DOI: 10.1088/1742-6596/871/1/012094
  • Peer Reviewed / Open Access
• [Journal Article] Vibrational characteristics of a superconducting magnetic bearing employed for a prototype polarization modulator (2017)
  • Author(s): Y. Sakurai, T. Matsumura, H. Sugai, N. Katayama, H. Ohsaki, Y. Terao, Y. Terachi, H. Kataza, S. Utsunomiya, and R. Yamamoto
  • Journal Title: Journal of Physics Conference Series Volume: 871 Pages: 012091-012091
  • DOI: 10.1088/1742-6596/871/1/012091
  • Peer Reviewed / Open Access
• [Journal Article] Bandpass mismatch error for satellite CMB experiments I: estimating the spurious signal (2017)
  • Author(s): Hoang Duc Thuong、Patanchon Guillaume、Bucher Martin、Matsumura Tomotake、Banerji Ranajoy、Ishino Hirokazu、Hazumi Masashi、Delabrouille Jacques
  • Journal Title: Journal of Cosmology and Astroparticle Physics Volume: 2017 Issue: 12 Pages: 015-015
  • DOI: 10.1088/1475-7516/2017/12/015
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Magnetically coupled gear based drive mechanism for contactless continuous rotation using superconducting magnetic bearing below 10?K (2016)
  • Author(s): Matsumura T.、Sakurai Y.、Kataza H.、Utsunomiya S.、Yamamoto R.
  • Journal Title: Physica C: Superconductivity and its Applications Volume: 530 Pages: 138-141
  • DOI: 10.1016/j.physc.2016.07.003
  • Peer Reviewed / Open Access
• [Journal Article] Millimeter-Wave Broadband Anti-Reflection Coatings Using Laser Ablation of Sub-Wavelength Structures (2016)
  • Author(s): TOMOTAKE MATSUMURA, KARL YOUNG, QI WEN, SHAUL HANANY, HIROKAZU ISHINO, YUKI INOUE, MASASHI HAZUMI, JÜRGEN KOCH, OLIVER STUNTMAN, VIKTOR SCHÜTZ
  • Journal Title: Applied Optics Volume: 55 Issue: 13 Pages: 3502-3509
  • DOI: 10.1364/ao.55.003502
  • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] Design and performance of a prototype polarization modulator rotational system for use in space using a superconducting magnetic bearing (2016)
  • Author(s): Tomotake Matsumura, Hirokazu Kataza, Shin Utsunomiya, Ryo Yamamoto, Masashi Hazumi, Nobuhiko Katayama
  • Journal Title: IEEE Transactions on Applied Superconductivity Volume: 印刷中 Pages: 1-4
  • Peer Reviewed / Open Access / Acknowledgement Compliant
• [Journal Article] Laser Processing of Sub-Wavelength Structures on Sapphire and Alumina for Millimeter Wavelength Broadband Anti- Reflection Coatings (2016)
  • Author(s): V. Schultz, K. Young, T. Matsumura, S. Hanany, J. Koch, O. Suttmann, O., Ludger, Q. Wen
  • Journal Title: Journal of Laser Micro/Nanoengineerin Volume: 印刷中
  • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] LiteBIRD: Mission Overview and Focal Plane Layout (2016)
  • Author(s): T. Matsumura , Y. Akiba, K. Arnold, J. Borrill, R. Chendra, Y. Chinone, A. Cukierman, T. de Haan, M. Dobbs, A. Dominjon, T. Elleflot, J. Errard, T. Fujino, H. Fuke, N. Goeckner-wald, N. Halverson, P. Harvey, M. Hasegawa, et al.
  • Journal Title: Journal of Low Temperature Physics Volume: 185 Issue: 3-4 Pages: 1-8
  • DOI: 10.1007/s10909-016-1542-8
  • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
• [Presentation] 宇宙マイクロ波背景放射偏光観測実験のための偏光変調器用超電導軸受の発熱特性 (2017)
  • Author(s): 桜井雄基，松村知岳，飯田光人，片山伸彦，菅井肇，大崎博之，寺尾悠，寺地祐介， 下村俊貴)，今田大皓，山本亮，宇都宮真， 片坐宏一
  • Organizer: 第29回「電磁力関連のダイナミクス」シンポジウム
• [Presentation] CMB 偏光観測衛星に用いる超電導磁気軸受の電磁的特性解析 (2017)
  • Author(s): 下村俊貴，寺地祐介，寺尾悠，大崎博之，桜井雄基，松村知岳，片山伸彦，菅井肇，今田大皓，山本亮，宇都宮真，片坐宏一
  • Organizer: 第29回「電磁力関連のダイナミクス」シンポジウム
• [Presentation] インフレーション探索を目的とした宇宙マイクロ波背景放射偏光観測のための超電導磁気軸受開発の概要 (2017)
  • Author(s): 松村知岳，桜井雄基，片山伸彦，菅井肇、下村俊貴，寺地祐介，寺尾悠，大崎博之、今田大皓，山本亮，宇都宮真，片坐宏一
  • Organizer: 低温工学・超電導学会
• [Presentation] The LiteBIRD CMB polarization mission (2017)
  • Author(s): Tomotake Matsumura, Takuro Fugino, Masaya Hasegawa, Masashi Hazumi et al.
  • Organizer: 13th Rencontres du Vietnam, Cosmology
  • Int'l Joint Research / Invited
• [Presentation] Development of a half-wave plate based polarization modulator unit for LiteBIRD (2017)
  • Author(s): Tomotake Matsumura et al.
  • Organizer: Low temperature detector 17th
  • Int'l Joint Research
• [Presentation] インフレーション仮説の検証を目的としたLiteBIRDの偏光変調器の開発概要 (2017)
  • Author(s): 松村知岳, 桜井雄基, 片山伸彦, 菅井肇, 飯田輝人, 大崎博之, 寺尾悠, 下村俊貴, 小林洋平, 今田大皓, 山本亮, 宇都宮真, 片坐宏一, 羽澄昌史, 石野宏和, 小松国幹, 中村正吾, 高久諒太, 金井啓晃, 他 LiteBIRD Phase-A1 team
  • Organizer: 日本物理学会
• [Presentation] RCWAを用いたCMB偏光観測のためのモスアイ式広帯域反射防止の設計とその評価 (2017)
  • Author(s): 高久諒太, 今田大皓, 松村知岳, 桜井雄基, 片山伸彦, 中村正吾, 金井啓晃
  • Organizer: 日本物理学会
• [Presentation] LiteBIRDで使用する光学部材の陽子線による影響(5) (2017)
  • Author(s): 片岡雄一郎, 小松国幹, 石野宏和, 樹林敦子, 魚住聖, 山田要介, 喜田洋介, 秀平直人, 松村知岳, 片山伸彦, 羽澄昌史, 南雄人, 中村正吾, 山下徹, 藤野琢郎, 金井啓晃, 鈴木有春, Ben Westbrook, Oliver Jeong, Ian Shirley, Johannes Hubmayr, 他LiteBIRDPhase-A1 team
  • Organizer: 日本物理学会
• [Presentation] LiteBIRDの偏光変調器に用いる広帯域多層半波長板の開発 (2017)
  • Author(s): 小松国幹, 松村知岳, 桜井雄基, 片山伸彦, 菅井肇, 今田大皓, 石野宏和, 羽澄昌史, 他 LiteBIRD Phase-A1 team
  • Organizer: 日本物理学会
• [Presentation] Thermal characteristics of a 400mm diameter levitating rotor in a superconducting magnetic bearing operating below at 10K for a CMB polarization experiment (2017)
  • Author(s): Y. Sakurai, T. Matsumura, T. Iida, H. Kanai, N. Katayama, H. Imada, H. Ohsaki, Y. Terao, T. Shimomura, H. Sugai, H. Kataza, R. Yamamoto, S. Utsunomiya
  • Organizer: 13th European Conference of Applied Superconductivity
  • Int'l Joint Research
• [Presentation] インフレーション探索を目的とした宇宙マイ クロ波背景放射偏光観測のための超電導軸受を用いた偏光変調器実証器の開発現状 (2017)
  • Author(s): 松村知岳，桜井雄基，片山伸彦，菅井肇、下村俊貴，廣田幸真，寺尾悠，大崎博之、今田大皓，山本亮，宇都宮真，片坐宏一、金井啓晃、中村正吾、鈴木純一、牧宗慶、飯田輝人
  • Organizer: 低温工学・超電導学会
• [Presentation] Broadband polarization modulation efficiency of the achromatic half-wave plate for LiteBIRD (2017)
  • Author(s): K. Komatsu et al.
  • Organizer: 2nd B-mode from space
  • Int'l Joint Research
• [Presentation] Anti-reflection coating using moth eye structure (2017)
  • Author(s): R. Takaku et al.
  • Organizer: 2nd B-mode from space
  • Int'l Joint Research
• [Presentation] Prototype polarization modulator development for LiteBIRD (2017)
  • Author(s): H. Kanai et al.
  • Organizer: 2nd B-mode from space
  • Int'l Joint Research
• [Presentation] Current status and future prospect of studying the physics of early universe using the measurement of the cosmic microwave background polarization (2017)
  • Author(s): T. Matsumura
  • Organizer: CosPA2017
  • Int'l Joint Research / Invited
• [Presentation] Effect of Proton Irradiation to a Trapped Field Bulk YBCO for Use in Space (2017)
  • Author(s): T. Matsumura et al.
  • Organizer: The 10th International Workshop on Processing and Applications of Superconducting (RE)BCO Large Grain Materials (PASREG 2017)
  • Int'l Joint Research
• [Presentation] Design of the prototype SMB system for the space-borne polarimeter (2017)
  • Author(s): Y. Sakurai et al.
  • Organizer: The 10th International Workshop on Processing and Applications of Superconducting (RE)BCO Large Grain Materials (PASREG 2017)
  • Int'l Joint Research
• [Presentation] Numerical analysis of spring characteristics and rotational loss of superconducting magnetic bearings for a polarization modulator (2017)
  • Author(s): T. Shimomura et al.
  • Organizer: The 10th International Workshop on Processing and Applications of Superconducting (RE)BCO Large Grain Materials (PASREG 2017)
  • Int'l Joint Research
• [Presentation] Development of the broadband anti-reflection coating on sapphire using a sub-wavelength structure for a CMB polarization experiment (2017)
  • Author(s): T. Matsumura, S. Hanany, H. Imada, H. Ishino, N. Katayama, Y. Kobayashi, K. Komatsu, K. Konishi, M. Kuwata-Gonokami, S. Nakamura, H. Sakurai, Y. Sakurai, R. Takaku , S. Utsunomiya, Q. Wen, K. Young, J. Yumoto
  • Organizer: 29th IEEE International Symposium on Space Terahertz Technology (ISSTT2018)
  • Int'l Joint Research
• [Presentation] Instrumentally induced spurious polarization of a multi-layer half wave plate for a CMB polarization observation (2017)
  • Author(s): H. Imada 1, T. Matsumura, R. Takaku, G. Patanchon, H. Ishino, Y. Sakurai, K. Komatsu, N. Katayama
  • Organizer: 29th IEEE International Symposium on Space Terahertz Technology (ISSTT2018)
  • Int'l Joint Research
• [Presentation] Development of a cryogenic remote sensing thermometer for CMB polarization experiments (2017)
  • Author(s): Y. Sakurai, T. Matsumura, N. Katayama, H. Kanai, T. Iida
  • Organizer: 29th IEEE International Symposium on Space Terahertz Technology (ISSTT2018)
  • Int'l Joint Research
• [Presentation] LiteBIRD の偏光変調器に用いる広帯域多層半波長板の開発(2) (2017)
  • Author(s): 小松国幹, 松村知岳, 桜井雄基, 片山伸彦, 菅井肇, 今田大皓, 石野宏和, 羽澄昌史, 他 LiteBIRD Phase-A1 team
  • Organizer: 日本物理学会
• [Presentation] LiteBIRD偏光変調器に用いるサファイアの低温熱物性測定 (2017)
  • Author(s): 渡邊尚貴, 川崎健夫, 松村知岳, 桜井雄基, 他LiteBIRD Phase-A1 team
  • Organizer: 日本物理学会
• [Presentation] LiteBIRDで使用する光学部材の陽子線による影響(6) (2017)
  • Author(s): 片岡雄一郎, 小松国幹, 石野宏和, 樹林敦子, 魚住聖, 喜田洋介, 秀平直人, 松村知岳, 片山伸彦, 桜井雄基, 羽澄昌史
  • Organizer: 日本物理学会
• [Presentation] 宇宙マイクロ波背景放射Bモード偏光観測衛星LiteBIRDの偏光変調器の開発概要 (2017)
  • Author(s): 片山伸彦, 松村知岳, 桜井雄基, 菅井肇, 飯田輝人, 大崎博之, 寺尾悠, 下村俊貴, 今田大皓, 山本亮, 宇都宮真, 片坐宏一, 羽澄昌史, 石野宏和, 小松国幹, 中村正吾, 高久諒太, 金井啓晃, 他, LiteBIRD phase A1チーム
  • Organizer: 日本物理学会
• [Presentation] 宇宙マイクロ波背景放射偏光観測を用いたインフレーション仮説の検証と超伝導軸 受けを用いた半波長板偏光変調器の開発 (2016)
  • Author(s): 松村知岳
  • Organizer: 第２８回電磁力関連のダイナミクスシンポジウムSEAD28（機械力学・計測制御部門企画）
  • Place of Presentation: 慶應義塾大学日吉キャンパス
  • Year and Date: 2016-05-18
  • Invited
• [Presentation] インフレーション仮説探索のための半波長板を用いた連続回転偏光変調器の熱特性について (2016)
  • Author(s): 松村知岳, 片坐宏一, 宇都宮真, 山本亮、桜井雄基
  • Organizer: 日本物理学会
  • Place of Presentation: 東北学院大学
  • Year and Date: 2016-03-19
• [Presentation] LiteBIRDにおける偏光変調器のための連続回転機構の開発 (2016)
  • Author(s): 桜井雄基, 松村知岳, 片山伸彦, 菅井肇, 羽澄昌史, 山本亮, 宇都宮真, 片坐宏一, 他 LiteBIRD WG
  • Organizer: 日本物理学会
• [Presentation] LiteBIRDで使用する光学部材の陽子線による影響（3） (2016)
  • Author(s): 小松国幹, 石野宏和, 樹林敦子, 魚住聖, 山田要介, 喜田洋介, 舟木巧, 秀平直人, 松村知岳, 羽澄昌史, 片山伸彦, 服部香里, 唐津謙一, 中村正吾, 入江郁也, 藤野琢郎, 山下徹, 堀泰斗, 鈴木有春, Ben Westbrook, Oliver Jeong, Ian Shirley, Johannes Hubmayr, 他 LiteBIRDワーキンググループ
  • Organizer: 日本物理学会
• [Presentation] CMB偏光観測のための広帯域半波長板の光学特性評価に関する現状について (2016)
  • Author(s): 松村知岳, 石野宏和, 今田大皓, 羽澄昌史, 片山伸彦, 桜井雄基, 菅井肇
  • Organizer: 日本物理学会
• [Presentation] Polarization modulator for LiteBIRD (2016)
  • Author(s): Tomotake Matsumura, Takuro Fugino, Masaya Hasegawa, Masashi Hazumi et al.
  • Organizer: SPIE Astronomical Telescopes + Instrumentation
  • Int'l Joint Research
• [Presentation] Thermal performance of a prototype polarization modulator using a superconducting magnetic bearing operating below 10 K (2016)
  • Author(s): Yuki Sakurai, Tomotake Matsumura, Hirokazu Kataza, Shin Utsunomiya, Ryo Yamamoto
  • Organizer: Applied Superconductivity Conference
  • Int'l Joint Research
• [Presentation] LiteBIRDにおける偏光変調器のための連続回転機構の開発 (2016)
  • Author(s): 桜井雄基, 松村知岳, 今田大皓, 菅井肇, 片山伸彦, 羽澄昌史, 山本亮, 宇都宮真, 片坐宏一, 他 LiteBIRD WG
  • Organizer: 日本物理学会
• [Presentation] LiteBIRDで使用する光学部材の陽子線による影響(4) (2016)
  • Author(s): 小松国幹, 石野宏和, 樹林敦子, 魚住聖, 山田要介, 喜田洋介, 舟木巧, 秀平直人, 松村知岳, 片山伸彦, 服部香里, 羽澄昌史, 南雄人, 唐津謙一, 中村正吾, 入江郁也, 藤野琢郎, 山下徹, 金井啓晃, 堀泰斗, 鈴木有春, Ben Westbrook, Oliver Jeong, Ian Shirley, Johannes Hubmayr, 他LiteBIRDワーキンググループ
  • Organizer: 日本物理学会
• [Presentation] Numerical Analysis of Fundamental Characteristics of Superconducting Magnetic Bearings for a Polarization Modulator (2016)
  • Author(s): Yusuke Terachi, Hiroyuki Ohsaki, Yutaka Terao, Yuki Sakurai, Tomotake Matsumura, Hajime Sugai, Shin Utsunomiya, Hirokazu Kataza, Ryo Yamamoto
  • Organizer: 29th International Symposium on Superconductivity - ISS2016
  • Int'l Joint Research
• [Presentation] Vibrational characteristics of a superconducting magnetic bearing employed for a prototype polarization modulator (2016)
  • Author(s): Yuki Sakurai, Tomotake Matsumura, Hajime Sugai, Nobuhiko Katayama, Hiroyuki Ohsaki, Yutaka Terao, Yusuke Terachi, Hirokazu Kataza, Shin Utsunomiya, Ryo Yamamoto
  • Organizer: 29th International Symposium on Superconductivity - ISS2016
  • Int'l Joint Research
• [Presentation] Polarization modulator for LiteBIRD (2015)
  • Author(s): Tomotake Matsumura
  • Organizer: B-mode from Space
  • Place of Presentation: Kavli-IPMU, Japan
  • Year and Date: 2015-12-10
  • Int'l Joint Research / Invited
• [Presentation] Magnetic Gear Drive Mechanism for Non-Contact Continuous Rotation using the Superconducting Magnetic Bearing (2015)
  • Author(s): Tomotake Matsumura, Shin Utsunomiya, Hirokazu Kataza, Ryo Yamamoto
  • Organizer: 28th International Symposium on Superconductivity
  • Place of Presentation: TOWER HALL FUNABORI, Tokyo, Japan
  • Year and Date: 2015-11-16
  • Int'l Joint Research
• [Presentation] 宇宙マイクロ波背景放射偏光観測衛星LiteBIRDに向けた半波長板偏光変調器開発 (2015)
  • Author(s): 松村知岳, 石野宏和, 宇都宮真, 片山伸彦, 片坐宏一, 菅井肇, 関本裕太郎, 永田竜, 羽澄昌史, 舟木巧, 山本亮
  • Organizer: 日本物理学会
  • Place of Presentation: 大阪市立大学
  • Year and Date: 2015-09-25
• [Presentation] Prototype design and performance of superconducting magnetic bearing system for a space compatible polarization modulator operating at 4 K (2015)
  • Author(s): MATSUMURA Tomotake, KATAZA Hirokazu, UTSUNOMIYA Shin, YAMAMOTO Ryo
  • Organizer: 12th European Conference on Applied Superconductivity
  • Place of Presentation: Lyon, France
  • Year and Date: 2015-09-06
  • Int'l Joint Research