Development of Laboratory Calibration System for CMB Polarization Detectors, and Search for CMB Polarization Components Originated from Primordial Gravitational Waves.

2011 Fiscal Year Final Research Report

• Project/Area Number: 21740205
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Single-year Grants
• Research Field: Particle/Nuclear/Cosmic ray/Astro physics
• Research Institution: High Energy Accelerator Research Organization
• Principal Investigator: HASEGAWA Masaya 大学共同利用機関法人高エネルギー加速器研究機構, 素粒子原子核研究所, 助教 (60435617)
• Project Period (FY): 2009 – 2011
• Keywords: 宇宙背景放射 / インフレーション / 原始重力波 / 偏光 / 検出器較正

Research Abstract

The main goals of this study are development of laboratory calibration system for Cosmic Microwave Background(CMB) polarization detectors, and search for the CMB polarization pattern originated from the primordial gravitational waves(B-modes) by QUIET experiment.
We successfully developed a novel calibration system with cryogenically-cooled loads, which provides in the laboratory a load condition similar to the actual observation, and we showed this system can generate polarized signals whose amplitude and angle are well controlled. We search for the B-modes with QUIET 43GHz data, and set an upper limit on the amplitude of r<2.2 at 95% C. L. This is one of the stringent limit to date.

Research Products

• [Journal Article] Ethernet-Based DAQ system for QUIET-II Detectors (2012)
  • Author(s): M. Nagai, K. Ichidoshiro, T. Higuchi, M. Ikeno, M. Hasegawa, M. Hazumi, O. Tajima, M. Tanaka, T. Uchida
  • Journal Title: Journal of Low Temperature Physics Volume: 169 Pages: 689-691
  • Peer Reviewed
• [Journal Article] Calibration System with Cryogenically-Cooled Loads for CMB Polarization Detectors (2011)
  • Author(s): M. Hasegawa, O. Tajima, Y. Chinone, M. Hazumi, K. Ishidoshiro, M. Nagai
  • Journal Title: Rev. Sci. Instrum Volume: 82 Pages: 054501
  • Peer Reviewed
• [Journal Article] First Season QUIET Observations : Measurements of CMB Polarization Power Spectra at 43 GHz in the Multipole Range 25<=ell<=475 (2011)
  • Author(s): QUIET Collaboration : C. Bischoff, A. Brizius, I. Buder, Y. Chinone, K. Cleary, R. N. Dumoulin, A. Kusaka, R. Monsalve, S. K. Nass, L. B. Newburgh, R. Reeves, K. M. Smith, I. K. Wehus, J. A. Zuntz, J. T. L. Zwart, L. Bronfman, R. Bustos, S. E. Church, C. Dickinson, H. K. Eriksen, P. G. Ferreira, T. Gaier, J. O. Gundersen, M. Hasegawa, M. Hazumi, K. M. Huffenberger, M. E. Jones, P. Kangaslahti, D. J. Kapner, C. R. Lawrence, M. Limon, J. May, J. J. McMahon, A. D. Miller, H. Nguyen, G. W. Nixon, T. J. Pearson, L. Piccirillo, S. J. E. Radford, A. C. S. Readhead, J. L. Richards, D. Samtleben, M. Seiffert, M. C. Shepherd, S. T. Staggs, O. Tajima, K. L. Thompson, K. Vanderlinde, R. Williamson, B. Windtein
  • Journal Title: The Astrophysics Journal Volume: 741 Pages: 111
  • Peer Reviewed
• [Presentation] Calibration System with Cryogenically-Cooled Loads for CMB Polarization detectors (2011)
  • Author(s): 長谷川雅也
  • Organizer: 14^<th> International Workshop on Low Temperature Detectors
  • Place of Presentation: ハイデルベルク(ドイツ)
  • Year and Date: 20110801-05
• [Presentation] Calibration System with Cryogenically-Cooled Loads for QUIET-II Detectors (2011)
  • Author(s): 長谷川雅也
  • Organizer: Technology and Instrumentation in Particle Physics in 2011
  • Place of Presentation: シカゴ(米国)
  • Year and Date: 20110609-14
• [Presentation] QUIET実験: Null復調データを用いたWバンドデータ解析の現状 (2011)
  • Author(s): 長谷川雅也
  • Organizer: 日本天文学会
  • Place of Presentation: 鹿児島大学
  • Year and Date: 2011-09-22
• [Presentation] QUIET Phase-IIに向けた偏光検出器開発の現状 (2011)
  • Author(s): 長谷川雅也
  • Organizer: 日本物理学会
  • Place of Presentation: 新潟大学(震災のため、講演予稿集を持って発表となす。)
  • Year and Date: 2011-03-25
• [Presentation] QUIET実験の初期観測結果(4)-データ解析:時系列データの処理とマップ作成- (2011)
  • Author(s): 長谷川雅也
  • Organizer: 日本天文学会
  • Place of Presentation: 筑波大学(震災のため、講演予稿集を持って発表となす。)
  • Year and Date: 2011-03-18
• [Presentation] QUIET-IIに向けた偏光検出器テストシステムの開発 (2010)
  • Author(s): 長谷川雅也
  • Organizer: 日本物理学会
  • Place of Presentation: 九州工業大学
  • Year and Date: 2010-09-13
• [Presentation] QUIET実験における2008年-2009年のCMB偏光観測 (2010)
  • Author(s): 長谷川雅也
  • Organizer: 日本物理学会
  • Place of Presentation: 岡山大学
  • Year and Date: 2010-03-20
• [Presentation] QUIET実験Wバンド観測の現状報告 (2009)
  • Author(s): 長谷川雅也
  • Organizer: 日本物理学会
  • Place of Presentation: 甲南大学
  • Year and Date: 2009-09-13
• [Remarks]
  • URL: http://cmb.kek.jp
• [Remarks]
  • URL: http://cbr.kek.jp