Planck发射前状态：低频仪器的设计与描述
天体物理仪器与方法
2015-05-18 v1 宇宙学与河外天体物理
摘要
在本文中，我们介绍了低频仪器(LFI)，它是作为Planck空间任务的一部分设计和开发的，该任务是ESA致力于宇宙微波背景(CMB)精确成像的计划。Planck-LFI将在三个中心频率为30、44和70 GHz的频段内观测全天的强度和偏振，而更高频率(100-850 GHz)将由HFI仪器覆盖。LFI是一个基于最先进的磷化铟低温HEMT放大器的微波辐射计阵列，采用差分系统实现，使用黑体负载作为参考信号。前端冷却至20K以获得最佳灵敏度，参考负载冷却至4K以最小化低频噪声。我们概述了LFI，讨论了主要的科学要求，并描述了为各种硬件子系统采用的设计解决方案。讨论了辐射、光学和热设计的主要驱动因素，包括对灵敏度、稳定性和系统效应抑制的严格要求。关于关键仪器单元和地面校准结果的更多细节在一组配套论文中提供。
引用
@article{arxiv.1001.3321,
title = {Planck pre-launch status: Design and description of the Low Frequency Instrument},
author = {M. Bersanelli and N. Mandolesi and R. C. Butler and A. Mennella and F. Villa and B. Aja and E. Artal and E. Artina and C. Baccigalupi and M. Balasini and G. Baldan and A. Banday and P. Bastia and P. Battaglia and T. Bernardino and E. Blackhurst and L. Boschini and C. Burigana and G. Cafagna and B. Cappellini and F. Cavaliere and F. Colombo and G. Crone and F. Cuttaia and O. D'Arcangelo and L. Danese and R. D. Davies and R. J. Davis and L. De Angelis and G. C. De Gasperis and L. De La Fuente and A. De Rosa and G. De Zotti and M. C. Falvella and F. Ferrari and R. Ferretti and L. Figini and S. Fogliani and C. Franceschet and E. Franceschi and T. Gaier and S. Garavaglia and F. Gomez and K. Gorski and A. Gregorio and P. Guzzi and J. M. Herreros and S. R. Hildebrandt and R. Hoyland and N. Hughes and M. Janssen and P. Jukkala and D. Kettle and V. H. Kilpia and M. Laaninen and P. M. Lapolla and C. R. Lawrence and J. P. Leahy and R. Leonardi and P. Leutenegger and S. Levin and P. B. Lilje and S. R. Lowe and D. Lawson P. M. Lubin and D. Maino and M. Malaspina and M. Maris and J. Marti-Canales and E. Martinez-Gonzalez and A. Mediavilla and P. Meinhold and M. Miccolis and G. Morgante and P. Natoli and R. Nesti and L. Pagan and C. Paine and B. Partridge and J. P. Pascual and F. Pasian and D. Pearson and M. Pecora and F. Perrotta and P. Platania and M. Pospieszalski and T. Poutanen and M. Prina and R. Rebolo and N. Roddis and J. A. Rubino-Martin and n M. J. Salmon and M. Sandri and M. Seiffert and R. Silvestri and A. Simonetto and P. Sjoman and G. F. Smoot and C. Sozzi and L. Stringhetti and E. Taddei and J. Tauber and L. Terenzi and M. Tomasi and J. Tuovinen and L. Valenziano and J. Varis and N. Vittorio and L. A. Wade and A. Wilkinson and F. Winder and A. Zacchei and A. Zonca},
journal= {arXiv preprint arXiv:1001.3321},
year = {2015}
}
备注
23 pages, 31 figures, accepted by Astronomy and Astrophysics, Planck LFI technical papers published by JINST: http://www.iop.org/EJ/journal/-page=extra.proc5/1748-0221