Updated Design of the CMB Polarization Experiment Satellite LiteBIRD

• DOI: 10.1007/s10909-019-02329-w
• Publication Date: 2020-01-27T04:13:32Z
• Authors: H. Sugai; P. A. R. Ade; Y. Akiba; D. Alonso; K. Arnold; J. Aumont; J. Austermann; C. Baccigalupi; A. J. Banday; R. Banerji; R. B. Barreiro; S. Basak; J. Beall; S. Beckman; M. Bersanelli; J. Borrill; F. Boulanger; M. L. Brown; M. Bucher; A. Buzzelli; E. Calabrese; F. J. Casas; A. Challinor; V. Chan; Y. Chinone; J.-F. Cliche; F. Columbro; A. Cukierman; D. Curtis; P. Danto; P. de Bernardis; T. de Haan; M. De Petris; C. Dickinson; M. Dobbs; T. Dotani; L. Duband; A. Ducout; S. Duff; A. Duivenvoorden; J.-M. Duval; K. Ebisawa; T. Elleflot; H. Enokida; H. K. Eriksen; J. Errard; T. Essinger-Hileman; F. Finelli; R. Flauger; C. Franceschet; U. Fuskeland; K. Ganga; J.-R. Gao; R. Génova-Santos; T. Ghigna; A. Gomez; M. L. Gradziel; J. Grain; F. Grupp; A. Gruppuso; J. E. Gudmundsson; N. W. Halverson; P. Hargrave; T. Hasebe; M. Hasegawa; M. Hattori; M. Hazumi; S. Henrot-Versille; D. Herranz; C. Hill; G. Hilton; Y. Hirota; E. Hivon; R. Hlozek; D.-T. Hoang; J. Hubmayr; K. Ichiki; T. Iida; H. Imada; K. Ishimura; H. Ishino; G. C. Jaehnig; M. Jones; T. Kaga; S. Kashima; Y. Kataoka; N. Katayama; T. Kawasaki; R. Keskitalo; A. Kibayashi; T. Kikuchi; K. Kimura; T. Kisner; Y. Kobayashi; N. Kogiso; A. Kogut; K. Kohri; E. Komatsu; K. Komatsu; K. Konishi; N. Krachmalnicoff; C. L. Kuo; N. Kurinsky; A. Kushino; M. Kuwata-Gonokami; L. Lamagna; M. Lattanzi; A. T. Lee; E. Linder; B. Maffei; D. Maino; M. Maki; A. Mangilli; E. Martínez-González; S. Masi; R. Mathon; T. Matsumura; A. Mennella; M. Migliaccio; Y. Minami; K. Mistuda; D. Molinari; L. Montier; G. Morgante; B. Mot; Y. Murata; J. A. Murphy; M. Nagai; R. Nagata; S. Nakamura; T. Namikawa; P. Natoli; S. Nerval; T. Nishibori; H. Nishino; Y. Nomura; F. Noviello; C. O’Sullivan; H. Ochi; H. Ogawa; H. Ogawa; H. Ohsaki; I. Ohta; N. Okada; N. Okada; L. Pagano; A. Paiella; D. Paoletti; G. Patanchon; F. Piacentini; G. Pisano; G. Polenta; D. Poletti; T. Prouvé; G. Puglisi; D. Rambaud; C. Raum; S. Realini; M. Remazeilles; G. Roudil; J. A. Rubiño-Martín; M. Russell; H. Sakurai; Y. Sakurai; M. Sandri; G. Savini; D. Scott; Y. Sekimoto; B. D. Sherwin; K. Shinozaki; M. Shiraishi; P. Shirron; G. Signorelli; G. Smecher; P. Spizzi; S. L. Stever; R. Stompor; S. Sugiyama; A. Suzuki; J. Suzuki; E. Switzer; R. Takaku; H. Takakura; S. Takakura; Y. Takeda; A. Taylor; E. Taylor; Y. Terao; K. L. Thompson; B. Thorne; M. Tomasi; H. Tomida; N. Trappe; M. Tristram; M. Tsuji; M. Tsujimoto; C. Tucker; J. Ullom; S. Uozumi; S. Utsunomiya; J. Van Lanen; G. Vermeulen; P. Vielva; F. Villa; M. Vissers; N. Vittorio; F. Voisin; I. Walker; N. Watanabe; I. Wehus; J. Weller; B. Westbrook; B. Winter; E. Wollack; R. Yamamoto; N. Y. Yamasaki; M. Yanagisawa; T. Yoshida; J. Yumoto; M. Zannoni; A. Zonca
• Keywords: Lagrangian point

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 future satellite CMB polarization experiments. LiteBIRD is most advanced phase among such satellites, targeting its launch Japanese Fiscal Year 2027 (2027FY) with JAXA's H3 rocket. It will accommodate more than 4000 TESs focal planes reflective low-frequency and refractive medium-and-high-frequency telescopes order to detect a signature imprinted cosmic microwave background (CMB) by primordial gravitational waves predicted inflation. The total wide frequency coverage between 34GHz 448GHz enables us extract weak spiral patterns through precise subtraction our Galaxy's foreground emission using spectral differences signals. Telescopes are cooled down 5Kelvin suppressing thermal noise contain modulators transmissive half-wave plates at individual apertures separating sky signals from artificial mitigating instrumental 1/f noise. Passive cooling V-grooves supports active mechanical coolers as well adiabatic demagnetization refrigerators. Sky observations second Sun-Earth Lagrangian point, L2, planned three years. An international collaboration Japan, USA, Canada, Europe sharing various roles. In May 2019, Institute Space Astronautical Science (ISAS), JAXA selected strategic large mission No. 2.