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Proceedings Paper

LiteBIRD: a small satellite for the study of B-mode polarization and inflation from cosmic background radiation detection
Author(s): M. Hazumi; J. Borrill; Y. Chinone; M. A. Dobbs; H. Fuke; A. Ghribi; M. Hasegawa; K. Hattori; M. Hattori; W. L. Holzapfel; Y. Inoue; K. Ishidoshiro; H. Ishino; K. Karatsu; N. Katayama; I. Kawano; A. Kibayashi; Y. Kibe; N. Kimura; K. Koga; E. Komatsu; A. T. Lee; H. Matsuhara; T. Matsumura; S. Mima; K. Mitsuda; H. Morii; S. Murayama; M. Nagai; R. Nagata; S. Nakamura; K. Natsume; H. Nishino; A. Noda; T. Noguchi; I. Ohta; C. Otani; P. L. Richards; S. Sakai; N. Sato; Y. Sato; Y. Sekimoto; A. Shimizu; K. Shinozaki; H. Sugita; A. Suzuki; T. Suzuki; O. Tajima; S. Takada; Y. Takagi; Y. Takei; T. Tomaru; Y. Uzawa; H. Watanabe; N. Yamasaki; M. Yoshida; T. Yoshida; K. Yotsumoto
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Paper Abstract

LiteBIRD [Lite (Light) satellite for the studies of B-mode polarization and Inflation from cosmic background Radiation Detection] is a small satellite to map the polarization of the cosmic microwave background (CMB) radiation over the full sky at large angular scales with unprecedented precision. Cosmological inflation, which is the leading hypothesis to resolve the problems in the Big Bang theory, predicts that primordial gravitational waves were created during the inflationary era. Measurements of polarization of the CMB radiation are known as the best probe to detect the primordial gravitational waves. The LiteBIRD working group is authorized by the Japanese Steering Committee for Space Science (SCSS) and is supported by JAXA. It has more than 50 members from Japan, USA and Canada. The scientific objective of LiteBIRD is to test all the representative inflation models that satisfy single-field slow-roll conditions and lie in the large-field regime. To this end, the requirement on the precision of the tensor-to-scalar ratio, r, at LiteBIRD is equal to or less than 0.001. Our baseline design adopts an array of multi-chroic superconducting polarimeters that are read out with high multiplexing factors in the frequency domain for a compact focal plane. The required sensitivity of 1.8μKarcmin is achieved with 2000 TES bolometers at 100mK. The cryogenic system is based on the Stirling/JT technology developed for SPICA, and the continuous ADR system shares the design with future X-ray satellites.

Paper Details

Date Published: 21 September 2012
PDF: 9 pages
Proc. SPIE 8442, Space Telescopes and Instrumentation 2012: Optical, Infrared, and Millimeter Wave, 844219 (21 September 2012); doi: 10.1117/12.926743
Show Author Affiliations
M. Hazumi, High Energy Accelerator Research Organization (Japan)
The Graduate Univ. for Advanced Studies (Japan)
J. Borrill, Lawrence Berkeley National Lab. (United States)
Y. Chinone, High Energy Accelerator Research Organization (Japan)
M. A. Dobbs, McGill Univ. (Canada)
H. Fuke, Institute of Space and Aeronautical Science, Japan Aerospace Exploration Agency (Japan)
A. Ghribi, Univ. of California, Berkeley (United States)
M. Hasegawa, High Energy Accelerator Research Organization (Japan)
K. Hattori, High Energy Accelerator Research Organization (Japan)
M. Hattori, Tohoku Univ. (Japan)
W. L. Holzapfel, Univ. of California, Berkeley (United States)
Y. Inoue, The Graduate Univ. for Advanced Studies (Japan)
K. Ishidoshiro, High Energy Accelerator Research Organization (Japan)
H. Ishino, Okayama Univ. (Japan)
K. Karatsu, National Astronomical Observatory of Japan (Japan)
N. Katayama, IPMU, The Univ. of Tokyo (Japan)
I. Kawano, Aerospace Research and Development Directorate, Japan Aerospace Exploration Agency (Japan)
A. Kibayashi, Okayama Univ. (Japan)
Y. Kibe, Okayama Univ. (Japan)
N. Kimura, High Energy Accelerator Research Organization (Japan)
K. Koga, RIKEN (Japan)
E. Komatsu, The Univ. of Texas at Austin (United States)
A. T. Lee, Univ. of California, Berkeley (United States)
H. Matsuhara, Institute of Space and Aeronautical Science, Japan Aerospace Exploration Agency (Japan)
T. Matsumura, High Energy Accelerator Research Organization (Japan)
S. Mima, Okayama Univ. (Japan)
K. Mitsuda, Institute of Space and Aeronautical Science, Japan Aerospace Exploration Agency (Japan)
H. Morii, High Energy Accelerator Research Organization (Japan)
S. Murayama, Yokohama National Univ. (Japan)
M. Nagai, High Energy Accelerator Research Organization (Japan)
R. Nagata, High Energy Accelerator Research Organization (Japan)
S. Nakamura, Yokohama National Univ. (Japan)
K. Natsume, Yokohama National Univ. (Japan)
H. Nishino, Univ. of California, Berkeley (United States)
A. Noda, Aerospace Research and Development Directorate, Japan Aerospace Exploration Agency (Japan)
T. Noguchi, National Astronomical Observatory of Japan (Japan)
I. Ohta, Kinki Univ. (Japan)
C. Otani, RIKEN (Japan)
P. L. Richards, Univ. of California, Berkeley (United States)
S. Sakai, Institute of Space and Aeronautical Science, Japan Aerospace Exploration Agency (Japan)
N. Sato, High Energy Accelerator Research Organization (Japan)
Y. Sato, Aerospace Research and Development Directorate, Japan Aerospace Exploration Agency (Japan)
Y. Sekimoto, National Astronomical Observatory of Japan (Japan)
A. Shimizu, The Graduate Univ. for Advanced Studies (Japan)
K. Shinozaki, Institute of Space and Aeronautical Science, Japan Aerospace Exploration Agency (Japan)
H. Sugita, Institute of Space and Aeronautical Science, Japan Aerospace Exploration Agency (Japan)
A. Suzuki, Univ. of California, Berkeley (United States)
T. Suzuki, High Energy Accelerator Research Organization (Japan)
O. Tajima, High Energy Accelerator Research Organization (Japan)
S. Takada, Univ. of Tsukuba (Japan)
Y. Takagi, Yokohama National Univ. (Japan)
Y. Takei, Institute of Space and Aeronautical Science, Japan Aerospace Exploration Agency (Japan)
T. Tomaru, High Energy Accelerator Research Organization (Japan)
Y. Uzawa, National Astronomical Observatory of Japan (Japan)
H. Watanabe, The Graduate Univ. for Advanced Studies (Japan)
N. Yamasaki, Institute of Space and Aeronautical Science, Japan Aerospace Exploration Agency (Japan)
M. Yoshida, High Energy Accelerator Research Organization (Japan)
T. Yoshida, ISAS, Institute of Space and Aeronautical Science, Japan Aerospace Exploration Agency (Japan)
K. Yotsumoto, ARD, Institute of Space and Aeronautical Science, Japan Aerospace Exploration Agency (Japan)


Published in SPIE Proceedings Vol. 8442:
Space Telescopes and Instrumentation 2012: Optical, Infrared, and Millimeter Wave
Mark C. Clampin; Giovanni G. Fazio; Howard A. MacEwen; Jacobus M. Oschmann, Editor(s)

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