Updated Design of the CMB Polarization Experiment Satellite LiteBIRD
- Univ. of Tokyo, Kashiwa (Japan)
- Cardiff Univ. (United Kingdom)
- High Energy Accelerator Research Organization (KEK), Tsukuba (Japan); SOKENDAI, Hayama (Japan)
- Univ. of Oxford (United Kingdom)
- Univ. of California, San Diego, CA (United States)
- Univ. of Toulouse (France)
- National Inst. of Standards and Technology (NIST), Boulder, CO (United States)
- Inst. for Fundamental Physics of the Universe (IFPU), Grignano (Italy); National Inst. for Nuclear Physics (INFN), Trieste (Italy); International School for Advanced Studies (SISSA), Trieste (Italy)
- Univ. of Oslo (Norway)
- Univ. of Cantabria, Santander (Spain)
- Indian Inst. of Science Education and Research, Thiruvananthapuram (India); International School for Advanced Studies (SISSA), Trieste (Italy)
- Univ. of California, Berkeley, CA (United States)
- National Inst. for Nuclear Physics (INFN), Milan (Italy); Univ. of Milano (Italy)
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Univ. of California, Berkeley, CA (United States)
- Univ. Paris-Saclay, Orsay (France)
- Univ. of Manchester (United Kingdom)
- Univ. Paris Diderot (France)
- Univ. of Roma Tor Vergata, Rome (Italy)
- Kavli Inst. for Cosmology (KICC), Cambridge (United Kingdom); Univ. of Cambridge (United Kingdom)
- Univ. of Toronto (Canada)
- Univ. of Tokyo, Kashiwa (Japan); Univ. of California, Berkeley, CA (United States)
- McGill Univ., Montreal (Canada)
- National Inst. for Nuclear Physics (INFN), Rome (Italy); Sapienza Univ., Rome (Italy)
- Centre National D'Etudes Spatiales (CNES), Paris (France)
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- Inst. of Space and Astronautical Science (ISAS), Sagamihara (Japan)
- Univ. Grenoble Alps (France)
- Stockholm Univ. (Sweden)
- NASA Goddard Space Flight Center (GSFC), Greenbelt, MD (United States)
- Italian National Inst. for Astrophysics (INAF), Bologna (Italy)
- Netherlands Inst. for Space Research (SRON), Utrecht (Netherlands)
- Inst. of Astrophysics of the Canary Islands (IAC), Santa Cruz de Tenerife (Spain); Univ. of La Laguna, Santa Cruz de Tenerife (Spain)
- Univ. of Tokyo, Kashiwa (Japan); Univ. of Oxford (United Kingdom)
- Univ. of Ireland, Maynooth (Ireland)
- Max Planck Inst. for Extraterrestrial Physics, Garching (Germany); Ludwig-Maximimilians Univ., Munich (Germany)
- Univ. of Colorado, Boulder, CO (United States)
- Tokyo Univ., Sendai (Japan)
- Inst. of Space and Astronautical Science (ISAS), Sagamihara (Japan); Univ. of Tokyo, Kashiwa (Japan); High Energy Accelerator Research Organization (KEK), Tsukuba (Japan); SOKENDAI, Hayama (Japan)
- Sorbonne Univ., Paris (France)
- Cornell Univ., Ithaca, NY (United States); Univ. of Science and Technology of Hanoi (USTH) (Vietnam)
- Nagoya Univ. (Japan)
- Waseda Univ., Tokyo (Japan)
- High Energy Accelerator Research Organization (KEK), Tsukuba (Japan); Okayama Univ. (Japan)
- National Astronomical Observatory of Japan (NAOJ), Mitaka (Japan)
- Okayama Univ. (Japan)
- Kitasato Univ., Sagamihara (Japan)
- National Inst. of Advanced Industrial Science and Technology (AIST), Tsukuba (Japan)
- Osaka Prefecture Univ., Sakai (Japan)
- High Energy Accelerator Research Organization (KEK), Tsukuba (Japan)
- Max Planck Inst. for Astrophysics, Garching (Germany)
- Univ. of Tokyo (Japan)
- Kavli Inst. for Particle Astrophysics and Cosmology, Menlo Park, CA (United States); Stanford Univ., CA (United States)
- Kurume Univ. (Japan)
- National Inst. for Nuclear Physics (INFN), Ferrara (Italy)
- National Inst. for Nuclear Physics (INFN), Rome (Italy); Univ. of Roma Tor Vergata, Rome (Italy)
- Univ. of Ferrara (Italy)
- Yokohama National Univ. (Japan)
- Univ. of Cambridge (United Kingdom)
- National Inst. for Nuclear Physics (INFN), Ferrara (Italy); Univ. of Ferrara (Italy)
- Japan Aerospace Exploration Agency (JAXA), Tsukuba (Japan)
- Saitama Univ. (Japan)
- Konan Univ., Kobe (Japan)
- Italian Space Agency (ASI), Rome (Italy)
- Stanford Univ., CA (United States)
- Univ. College London (United Kingdom)
- Univ. of British Columbia, Vancouver (Canada)
- Inst. of Space and Astronautical Science (ISAS), Sagamihara (Japan); High Energy Accelerator Research Organization (KEK), Tsukuba (Japan); SOKENDAI, Hayama (Japan)
- Kagawa College, Takamatsu (Japan)
- National Inst. for Nuclear Physics (INFN), Pisca (Italy)
- Three-Speed Logic, Inc., Victoria (Canada)
- Isnt. Neel, Grenoble (France)
- National Inst. for Nuclear Physics (INFN), Milan (Italy); Univ. of Milano Bicocca (Italy)
Recent developments of transition-edge sensors (TESs), based on extensive experience in ground-based experiments, have been making the sensor techniques mature enough for their application on future satellite CMB polarization experiments. LiteBIRD is in the most advanced phase among such future satellites, targeting its launch in Japanese Fiscal Year 2027 (2027FY) with JAXA's H3 rocket. It will accommodate more than 4000 TESs in focal planes of reflective low-frequency and refractive medium-and-high-frequency telescopes in order to detect a signature imprinted on the cosmic microwave background (CMB) by the primordial gravitational waves predicted in cosmic inflation. The total wide frequency coverage between 34GHz and 448GHz enables us to extract such weak spiral polarization patterns through the precise subtraction of our Galaxy's foreground emission by using spectral differences among CMB and foreground signals. Telescopes are cooled down to 5Kelvin for suppressing thermal noise and contain polarization modulators with transmissive half-wave plates at individual apertures for separating sky polarization signals from artificial polarization and for mitigating from instrumental 1/f noise. Passive cooling by using V-grooves supports active cooling with mechanical coolers as well as adiabatic demagnetization refrigerators. Sky observations from the second Sun-Earth Lagrangian point, L2, are planned for three years. An international collaboration between Japan, USA, Canada, and Europe is sharing various roles. In May 2019, the Institute of Space and Astronautical Science (ISAS), JAXA selected LiteBIRD as the strategic large mission No. 2.
- Research Organization:
- Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States); SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States); Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)
- Sponsoring Organization:
- Japanese Society for the Promotion of Science; Italian Space Agency; National Institute for Nuclear Physics (INFN); National Aeronautics and Space Administration (NASA); USDOE Office of Science (SC), High Energy Physics (HEP)
- Grant/Contract Number:
- AC02-05CH11231; JP15H05891; JP17H01115; JP17H01125; 80NSSC18K0132; 2016-24-H.1-2018; AC02-07CH11359
- OSTI ID:
- 1603607
- Alternate ID(s):
- OSTI ID: 1596055
- Report Number(s):
- FERMILAB-PUB-20-032-AE; arXiv:2001.01724; ark:/13030/qt3s62r7n4; TRN: US2104135
- Journal Information:
- Journal of Low Temperature Physics, Vol. 199; ISSN 0022-2291
- Publisher:
- SpringerCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Web of Science
Design of a Testbed for the Study of System Interference in Space CMB Polarimetry
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journal | January 2020 |
The optical design of the LiteBIRD Middle and High Frequency Telescope | preprint | January 2021 |
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