The LiteBIRD Satellite Mission - Sub-Kelvin Instrument
A. Suzuki, P. A. R. Ade, Y. Akiba, D. Alonso, K. Arnold, J. Aumont, C. Baccigalupi, D. Barron, S. Basak, S. Beckman, J. Borrill, F. Boulanger, M. Bucher, E. Cal… 展开作者
A. Suzuki, P. A. R. Ade, Y. Akiba, D. Alonso, K. Arnold, J. Aumont, C. Baccigalupi, D. Barron, S. Basak, S. Beckman, J. Borrill, F. Boulanger, M. Bucher, E. Calabrese, Y. Chinone, H-M. Cho, A. Cukierman, D. W. Curtis, T. de Haan, M. Dobbs, A. Dominjon, T. Dotani, L. Duband, A. Ducout, J. Dunkley, J. M. Duval, T. Elleflot, H. K. Eriksen, J. Errard, J. Fischer, T. Fujino, T. Funaki, U. Fuskeland, K. Ganga, N. Goeckner-Wald, J. Grain, N. W. Halverson, T. Hamada, T. Hasebe, M. Hasegawa, K. Hattori, M. Hattori, L. Hayes, M. Hazumi, N. Hidehira, C. A. Hill, G. Hilton, J. Hubmayr, K. Ichiki, T. Iida, H. Imada, M. Inoue, Y. Inoue, K. D., H. Ishino, O. Jeong, H. Kanai, D. Kaneko, S. Kashima, N. Katayama, T. Kawasaki, S. A. Kernasovskiy, R. Keskitalo, A. Kibayashi, Y. Kida, K. Kimura, T. Kisner, K. Kohri, E. Komatsu, K. Komatsu, C. L. Kuo, N. A. Kurinsky, A. Kusaka, A. Lazarian, A. T. Lee, D. Li, E. Linder, B. Maffei, A. Mangilli, M. Maki, T. Matsumura, S. Matsuura, D. Meilhan, S. Mima, Y. Minami, K. Mitsuda, L. Montier, M. Nagai, T. Nagasaki, R. Nagata, M. Nakajima, S. Nakamura, T. Namikawa, M. Naruse, H. Nishino, T. Nitta, T. Noguchi, H. Ogawa, S. Oguri, N. Okada, A. Okamoto, T. Okamura, C. Otani, G. Patanchon, G. Pisano, G. Rebeiz, M. Remazeilles, P. L. Richards, S. Sakai, Y. Sakurai, Y. Sato, N. Sato, M. Sawada, Y. Segawa, Y. Sekimoto, U. Seljak, B. D. Sherwin, T. Shimizu, K. Shinozaki, R. Stompor, H. Sugai, H. Sugita, J. Suzuki, O. Tajima, S. Takada, R. Takaku, S. Takakura, S. Takatori, D. Tanabe, E. Taylor, K. L. Thompson, B. Thorne, T. Tomaru, T. Tomida, N. Tomita, M. Tristram, C. Tucker, P. Turin, M. Tsujimoto, S. Uozumi, S. Utsunomiya, Y. Uzawa, F. Vansyngel, I. K. Wehus, B. Westbrook, M. Willer, N. Whitehorn, Y. Yamada, R. Yamamoto, N. Yamasaki, T. Yamashita, M. Yoshida
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7 pages 2 figures Journal of Low Temperature Physics - Special edition - LTD17 Proceeding
Inflation is the leading theory of the first instant of the universe. Inflation, which postulates that the universe underwent a period of rapid expansion an instant after its birth, provides convincing explanation for cosmological observations. Recent advancements in detector technology have opened opportunities to explore primordial gravitational waves generated by the inflation through B-mode (divergent-free) polarization pattern embedded in the Cosmic Microwave Background anisotropies. If detected, these signals would provide strong evidence for inflation, point to the correct model for inflation, and open a window to physics at ultra-high energies.
LiteBIRD is a satellite mission with a goal of detecting degree-and-larger-angular-scale B-mode polarization. LiteBIRD will observe at the second Lagrange point with a 400 mm diameter telescope and 2,622 detectors. It will survey the entire sky with 15 frequency bands from 40 to 400 GHz to measure and subtract foregrounds.
The U.S. LiteBIRD team is proposing to deliver sub-Kelvin instruments that include detectors and readout electronics. A lenslet-coupled sinuous antenna array will cover low-frequency bands (40 GHz to 235 GHz) with four frequency arrangements of trichroic pixels. An orthomode-transducer-coupled corrugated horn array will cover high-frequency bands (280 GHz to 402 GHz) with three types of single frequency detectors. The detectors will be made with Transition Edge Sensor (TES) bolometers cooled to a 100 milli-Kelvin base temperature by an adiabatic demagnetization refrigerator.The TES bolometers will be read out using digital frequency multiplexing with Superconducting QUantum Interference Device (SQUID) amplifiers. Up to 78 bolometers will be multiplexed with a single SQUID amplidier.
We report on the sub-Kelvin instrument design and ongoing developments for the LiteBIRD mission.
LiteBIRD是测量宇宙微波背景辐射偏振的下一代卫星飞行任务。在大角度尺度上，宇宙微波背景的B模式偏振带有原始引力波的印记，它的精确测量将为暴胀时代提供强有力的探测。LiteBIRD的目标是实现表征张量与标量之比$r$的测量，其不确定度为$δr=0.001$。为了实现这一目标，我们将在低温冷却的亚开尔文焦平面上采用千像素超导探测器阵列，光学系统的温度为4~K。我们目前正在考虑两个探测器阵列的选择;过渡边缘传感器（TES）测辐射热计和微波动力学电感探测器（MKID）。在本文中，我们给出了一个LiteBIRD的概述，并描述了一个基于TES的偏振计设计，以实现2~ $μ$ K $\cdot$ arcmin的目标灵敏度在50至320~GHz的频率范围。
Combining Systematic Effects in CMB Polarization Experiments through map-based simulations: application to LiteBIRD's HWP non-idealities and detectors non-linearity
Dipartimento di Fisica, Univ. La Sapienza（罗马大学物理系）；INFN Sezione di Roma（罗马国家核物理研究所）；Université Grenoble Alpes, CNRS, LPSC-IN2P3（格勒诺布尔阿尔卑斯大学）；High Energy Accelerator Research Organization (KEK)（高能加速器研究机构）；Kavli Institute for the Physics and Mathematics of the Universe (Kavli IPMU, WPI), UTIAS, The University of Tokyo（东京大学宇宙物质前沿研究中心）；International School for Advanced Studies (SISSA)（国际高等研究院）；INFN Sezione di Trieste（的里雅斯特国家核物理研究所）；Dipartimento di Fisica, Univ. of Milano-Bicocca（米兰比可卡大学物理系）
LiteBIRD Mission Overview after Mission Reformation
The University of Tokyo（东京大学）；High Energy Accelerator Research Organization (KEK)（高能加速器研究机构）；Laboratoire de Physique de l’École Normale Supérieure, ENS, Université PSL, CNRS, Sorbonne Université, Université de Paris（巴黎高等师范学院物理实验室，ENS，巴黎文理研究大学，法国国家科学研究中心，索邦大学，巴黎大学）；Università di Roma Tor Vergata（罗马第二大学）；SRON Space Research Organization Netherlands（荷兰空间研究所）；Univ Toulouse, CNES, CNRS, IRAP（图卢兹大学，CNES，CNRS，IRAP）；Princeton University（普林斯顿大学）；International School for Advanced Studies (SISSA)（国际高等研究院）；INFN Sezione di Trieste（意大利国家核物理研究所的里雅斯特分部）；IFPU（基础物理学前沿研究所）；Università di Ferrara（费拉拉大学）；INFN Sezione di Ferrara（意大利国家核物理研究所费拉拉分部）；INAF - OAS Bologna（意大利国家天体物理研究所博洛尼亚天文台）
Optimizing spectral-matching component separation for measuring CMB B-mode polarization with a satellite mission
Université Paris Cité（巴黎西岱大学）；CNRS（法国国家科学研究中心）；Astroparticule et Cosmologie（亚原子粒子与宇宙学）；ILANCE, CNRS – University of Tokyo International Research Laboratory（ILANCE，日本东京大学-法国国家科学研究中心国际研究实验室）；Kavli Institute for the Physics and Mathematics of the Universe (Kavli IPMU, WPI), UTIAS, The University of Tokyo（东京大学宇宙物质前沿研究所（Kavli IPMU））；Université Paris-Saclay（巴黎萨克雷大学）；IJCLab（伊夫·让勒默物理研究所）
