Concept design of low frequency telescope for CMB B-mode polarization satellite LiteBIRD
Concept design of low frequency telescope for CMB B-mode polarization satellite LiteBIRD
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CMB B模偏振卫星LiteBIRD低频望远镜概念设计
DOI：
10.1117/12.2561841
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发表时间：
2020
期刊：
影响因子：
--
通讯作者：
et al.
中科院分区：
文献类型：
--
作者：
Sekimoto Yutaro;et al.
LiteBIRD已被选定为JAXA在2020年代的大型战略使命，以在大角度尺度上观测整个天空的宇宙微波背景（CMB）B模式偏振。LiteBIRD的挑战是宽视场（FoV）和毫米波偏振测量的宽带能力，这是从系统要求中得出的。杂散光的可能路径随着更宽的FoV而增加，并且-56 dB的远旁瓣知识是具有挑战性的光学要求。LiteBIRD的机载望远镜之一低频望远镜（LFT：34-161 GHz）选择了交叉Dragone配置。它具有宽视场（18° x 9°），孔径直径为400 mm，对应于100 GHz附近约30弧分的角分辨率。经过对杂散光的广泛研究后，选择了焦比f/3.0和光轴交叉角90 °。主反射器和次反射器具有带锯齿的矩形形状，以减少来自反射镜边缘的衍射图案。反射器和结构由铝制成，以在5 K下从温热到工作温度成比例地收缩。已经开发了LFT的1/4比例模型以验证宽视场设计并展示降低的远旁瓣。偏振调制单元（PMU），实现了半波片（HWP）放置在前面的孔径光阑，该系统的入射光瞳。将具有大约1000个AlMn TES检测器和频率复用SQUID放大器的大焦平面冷却至100 mK。透镜和弯曲天线具有宽带能力。性能规格的LFT和拟议的验证计划的大纲。
LiteBIRD has been selected as JAXA’s strategic large mission in the 2020s, to observe the cosmic microwave background (CMB) B-mode polarization over the full sky at large angular scales. The challenges of LiteBIRD are the wide field-of-view (FoV) and broadband capabilities of millimeter-wave polarization measurements, which are derived from the system requirements. The possible paths of stray light increase with a wider FoV and the far sidelobe knowledge of -56 dB is a challenging optical requirement. A crossed-Dragone configuration was chosen for the low frequency telescope (LFT : 34–161 GHz), one of LiteBIRD’s onboard telescopes. It has a wide field-of-view (18° x 9°) with an aperture of 400 mm in diameter, corresponding to an angular resolution of about 30 arcminutes around 100 GHz. The focal ratio f/3.0 and the crossing angle of the optical axes of 90◦ are chosen after an extensive study of the stray light. The primary and secondary reflectors have rectangular shapes with serrations to reduce the diffraction pattern from the edges of the mirrors. The reflectors and structure are made of aluminum to proportionally contract from warm down to the operating temperature at 5 K. A 1/4 scaled model of the LFT has been developed to validate the wide field-of-view design and to demonstrate the reduced far sidelobes. A polarization modulation unit (PMU), realized with a half-wave plate (HWP) is placed in front of the aperture stop, the entrance pupil of this system. A large focal plane with approximately 1000 AlMn TES detectors and frequency multiplexing SQUID amplifiers is cooled to 100 mK. The lens and sinuous antennas have broadband capability. Performance specifications of the LFT and an outline of the proposed verification plan are presented.
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1/4 比例 LiteBIRD 低频望远镜远旁瓣天线方向图测量
影响因子：
3.2
作者：
Takakura Hayato;Sekimoto Yutaro;Inatani Junji;Kashima Shingo;Imada Hiroaki;Hasebe Takashi;Kaga Toru;Takeda Yoichi;Okada Norio
通讯作者：
Okada Norio
EPIC-IM十字型Dragone望远镜的光学设计
DOI：
10.1117/12.857423
发表时间：
2010
期刊：
--
影响因子：
--
作者：
H. Tran;Brad L. Johnson;M. Dragovan;J. Bock;A. Aljabri;A. Amblard;D. Bauman;M. Betoule;T. Chui;L. Colombo;A. Cooray;D. Crumb;P. Day;C. Dickenson;D. Dowell;S. Golwala;K. Gorski;S. Hanany;W. Holmes;K. Irwin;B. Keating;C. Kuo;Adrian T. Lee;A. Lange;C. Lawrence;S. Meyer;N. Miller;Hien Nguyen;E. Pierpaoli;N. Ponthieu;J. Puget;J. Raab;P. Richards;C. Satter;M. Seiffert;M. Shimon;B. Williams;J. Zmuidzinas
通讯作者：
J. Zmuidzinas
LiteBIRD：一颗小型卫星，用于研究宇宙背景辐射探测中的 B 模式偏振和膨胀
DOI：
--
发表时间：
2012
期刊：
Other Conferences
影响因子：
--
作者：
M. Hazumi;J. Borrill;Y. Chinone;M. Dobbs;H. Fuke;A. Ghribi;M. Hasegawa;K. Hattori;M. Hattori;W. Holzapfel;Y. Inoue;K. Ishidoshiro;H. Ishino;K. Karatsu;N. Katayama;I. Kawano;A. Kibayashi;Y. Kibe;N. Kimura;K. Koga;E. Komatsu;Adrian 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. 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;Yoshinori Uzawa;Hiroki Watanabe;N. Yamasaki;M. Yoshida;T. Yoshida;K. Yotsumoto
通讯作者：
K. Yotsumoto
利用辐射冷却优化 LiteBIRD 卫星低温架构
DOI：
10.1117/1.jatis.5.4.044002
发表时间：
2019
期刊：
Journal of Astronomical Telescopes, Instruments, and Systems
影响因子：
--
作者：
Hasebe Takashi;Sekimoto Yutaro;Dotani Tadayasu;Mitsuda Kazuhisa;Shinozaki Keisuke;Yoshida Seiji
通讯作者：
Yoshida Seiji
LiteBIRD基于连续旋转半波片的偏振调制器单元的设计与开发
DOI：
--
发表时间：
2018
期刊：
影响因子：
--
作者：
Z. Qin;Y. Wang;F. L. Fan;S. W. Cao;H. Haba;Y. Komori;S. Yano;D. Kaji;and K. Morimoto;Michinori Ishiwata;吉村浩明;Yuki Sakurai et. al.
通讯作者：
Yuki Sakurai et. al.