LiteBIRD 卫星任务——亚开尔文仪器
天体物理仪器与方法
2018-06-13 v3 星系天体物理
摘要
暴胀是宇宙诞生最初瞬间的主导理论。暴胀假说认为宇宙在诞生后一瞬间经历了快速膨胀期,为宇宙学观测提供了令人信服的解释。探测器技术的最新进展为探索暴胀产生的原初引力波开辟了机会,这些引力波通过宇宙微波背景各向异性中嵌入的 B 模式(无散度)偏振图样显现。若被探测到,这些信号将为暴胀提供强有力证据,指向正确的暴胀模型,并打开一扇通往超高能量物理的窗口。LiteBIRD 是一项以探测度及以上角尺度 B 模式偏振为目标的卫星任务。LiteBIRD 将在第二拉格朗日点用一台直径 400 mm 的望远镜和 2622 个探测器进行观测。它将以从 40 到 400 GHz 的 15 个频带巡天整个天空,以测量并扣除前景。美国 LiteBIRD 团队提议交付包含探测器和读出电子学的亚开尔文仪器。透镜耦合正弦天线阵列将以三色像素的四种频率排布覆盖低频带(40 GHz 至 235 GHz)。正交模转换器耦合的波纹喇叭阵列将以三类单频探测器覆盖高频带(280 GHz 至 402 GHz)。探测器将由 Transition Edge Sensor (TES) 辐射热计构成,通过绝热去磁制冷机冷却至 100 毫开尔文基础温度。TES 辐射热计将使用数字频率复用与 Superconducting QUantum Interference Device (SQUID) 放大器读出。最多 78 个辐射热计将由单个 SQUID 放大器复用。我们报告 LiteBIRD 任务的亚开尔文仪器设计与正在进行的发展。
引用
@article{arxiv.1801.06987,
title = {The LiteBIRD Satellite Mission - Sub-Kelvin Instrument},
author = {A. Suzuki and P. A. R. Ade and Y. Akiba and D. Alonso and K. Arnold and J. Aumont and C. Baccigalupi and D. Barron and S. Basak and S. Beckman and J. Borrill and F. Boulanger and M. Bucher and E. Calabrese and Y. Chinone and H-M. Cho and A. Cukierman and D. W. Curtis and T. de Haan and M. Dobbs and A. Dominjon and T. Dotani and L. Duband and A. Ducout and J. Dunkley and J. M. Duval and T. Elleflot and H. K. Eriksen and J. Errard and J. Fischer and T. Fujino and T. Funaki and U. Fuskeland and K. Ganga and N. Goeckner-Wald and J. Grain and N. W. Halverson and T. Hamada and T. Hasebe and M. Hasegawa and K. Hattori and M. Hattori and L. Hayes and M. Hazumi and N. Hidehira and C. A. Hill and G. Hilton and J. Hubmayr and K. Ichiki and T. Iida and H. Imada and M. Inoue and Y. Inoue and K. D. and H. Ishino and O. Jeong and H. Kanai and D. Kaneko and S. Kashima and N. Katayama and T. Kawasaki and S. A. Kernasovskiy and R. Keskitalo and A. Kibayashi and Y. Kida and K. Kimura and T. Kisner and K. Kohri and E. Komatsu and K. Komatsu and C. L. Kuo and N. A. Kurinsky and A. Kusaka and A. Lazarian and A. T. Lee and D. Li and E. Linder and B. Maffei and A. Mangilli and M. Maki and T. Matsumura and S. Matsuura and D. Meilhan and S. Mima and Y. Minami and K. Mitsuda and L. Montier and M. Nagai and T. Nagasaki and R. Nagata and M. Nakajima and S. Nakamura and T. Namikawa and M. Naruse and H. Nishino and T. Nitta and T. Noguchi and H. Ogawa and S. Oguri and N. Okada and A. Okamoto and T. Okamura and C. Otani and G. Patanchon and G. Pisano and G. Rebeiz and M. Remazeilles and P. L. Richards and S. Sakai and Y. Sakurai and Y. Sato and N. Sato and M. Sawada and Y. Segawa and Y. Sekimoto and U. Seljak and B. D. Sherwin and T. Shimizu and K. Shinozaki and R. Stompor and H. Sugai and H. Sugita and J. Suzuki and O. Tajima and S. Takada and R. Takaku and S. Takakura and S. Takatori and D. Tanabe and E. Taylor and K. L. Thompson and B. Thorne and T. Tomaru and T. Tomida and N. Tomita and M. Tristram and C. Tucker and P. Turin and M. Tsujimoto and S. Uozumi and S. Utsunomiya and Y. Uzawa and F. Vansyngel and I. K. Wehus and B. Westbrook and M. Willer and N. Whitehorn and Y. Yamada and R. Yamamoto and N. Yamasaki and T. Yamashita and M. Yoshida},
journal= {arXiv preprint arXiv:1801.06987},
year = {2018}
}
备注
7 pages 2 figures Journal of Low Temperature Physics - Special edition - LTD17 Proceeding