Multi-dimensional optimisation of the scanning strategy for the LiteBIRD space mission

arXiv - PHYS - Instrumentation and Methods for Astrophysics Pub Date : 2024-08-06 DOI:arxiv-2408.03040

Y. Takasefor the LiteBIRD Collaboration, L. Vacherfor the LiteBIRD Collaboration, H. Ishinofor the LiteBIRD Collaboration, G. Patanchonfor the LiteBIRD Collaboration, L. Montierfor the LiteBIRD Collaboration, S. L. Steverfor the LiteBIRD Collaboration, K. Ishizakafor the LiteBIRD Collaboration, Y. Naganofor the LiteBIRD Collaboration, W. Wangfor the LiteBIRD Collaboration, J. Aumontfor the LiteBIRD Collaboration, K. Aizawafor the LiteBIRD Collaboration, A. Anandfor the LiteBIRD Collaboration, C. Baccigalupifor the LiteBIRD Collaboration, M. Ballardinifor the LiteBIRD Collaboration, A. J. Bandayfor the LiteBIRD Collaboration, R. B. Barreirofor the LiteBIRD Collaboration, N. Bartolofor the LiteBIRD Collaboration, S. Basakfor the LiteBIRD Collaboration, M. Bersanellifor the LiteBIRD Collaboration, M. Bortolamifor the LiteBIRD Collaboration, T. Brinckmannfor the LiteBIRD Collaboration, E. Calabresefor the LiteBIRD Collaboration, P. Campetifor the LiteBIRD Collaboration, E. Carinosfor the LiteBIRD Collaboration, A. Caronesfor the LiteBIRD Collaboration, F. J. Casasfor the LiteBIRD Collaboration, K. Cheungfor the LiteBIRD Collaboration, L. Clermontfor the LiteBIRD Collaboration, F. Columbrofor the LiteBIRD Collaboration, A. Coppolecchiafor the LiteBIRD Collaboration, F. Cuttaiafor the LiteBIRD Collaboration, P. de Bernardisfor the LiteBIRD Collaboration, T. de Haanfor the LiteBIRD Collaboration, E. de la Hozfor the LiteBIRD Collaboration, S. Della Torrefor the LiteBIRD Collaboration, P. Diego-Palazuelosfor the LiteBIRD Collaboration, G. D'Alessandrofor the LiteBIRD Collaboration, H. K. Eriksenfor the LiteBIRD Collaboration, J. Errardfor the LiteBIRD Collaboration, F. Finellifor the LiteBIRD Collaboration, U. Fuskelandfor the LiteBIRD Collaboration, G. Gallonifor the LiteBIRD Collaboration, M. Gallowayfor the LiteBIRD Collaboration, M. Gervasifor the LiteBIRD Collaboration, T. Ghignafor the LiteBIRD Collaboration, S. Giardiellofor the LiteBIRD Collaboration, C. Gimeno-Amofor the LiteBIRD Collaboration, E. Gjerløwfor the LiteBIRD Collaboration, R. González Gonzálezfor the LiteBIRD Collaboration, A. Gruppusofor the LiteBIRD Collaboration, M. Hazumifor the LiteBIRD Collaboration, S. Henrot-Versilléfor the LiteBIRD Collaboration, L. T. Hergtfor the LiteBIRD Collaboration, K. Ikumafor the LiteBIRD Collaboration, K. Kohrifor the LiteBIRD Collaboration, L. Lamagnafor the LiteBIRD Collaboration, M. Lattanzifor the LiteBIRD Collaboration, C. Leloupfor the LiteBIRD Collaboration, M. Lembofor the LiteBIRD Collaboration, F. Levrierfor the LiteBIRD Collaboration, A. I. Lonappanfor the LiteBIRD Collaboration, M. López-Caniegofor the LiteBIRD Collaboration, G. Luzzifor the LiteBIRD Collaboration, B. Maffeifor the LiteBIRD Collaboration, E. Martínez-Gonzálezfor the LiteBIRD Collaboration, S. Masifor the LiteBIRD Collaboration, S. Matarresefor the LiteBIRD Collaboration, F. T. Matsudafor the LiteBIRD Collaboration, T. Matsumurafor the LiteBIRD Collaboration, S. Michelifor the LiteBIRD Collaboration, M. Migliacciofor the LiteBIRD Collaboration, M. Monellifor the LiteBIRD Collaboration, G. Morgantefor the LiteBIRD Collaboration, B. Motfor the LiteBIRD Collaboration, R. Nagatafor the LiteBIRD Collaboration, T. Namikawafor the LiteBIRD Collaboration, A. Novellifor the LiteBIRD Collaboration, K. Odagirifor the LiteBIRD Collaboration, S. Ogurifor the LiteBIRD Collaboration, R. Omaefor the LiteBIRD Collaboration, L. Paganofor the LiteBIRD Collaboration, D. Paolettifor the LiteBIRD Collaboration, F. Piacentinifor the LiteBIRD Collaboration, M. Pincherafor the LiteBIRD Collaboration, G. Polentafor the LiteBIRD Collaboration, L. Porcellifor the LiteBIRD Collaboration, N. Raffuzzifor the LiteBIRD Collaboration, M. Remazeillesfor the LiteBIRD Collaboration, A. Ritaccofor the LiteBIRD Collaboration, M. Ruiz-Grandafor the LiteBIRD Collaboration, Y. Sakuraifor the LiteBIRD Collaboration, D. Scottfor the LiteBIRD Collaboration, Y. Sekimotofor the LiteBIRD Collaboration, M. Shiraishifor the LiteBIRD Collaboration, G. Signorellifor the LiteBIRD Collaboration, R. M. Sullivanfor the LiteBIRD Collaboration, H. Takakurafor the LiteBIRD Collaboration, L. Terenzifor the LiteBIRD Collaboration, M. Tomasifor the LiteBIRD Collaboration, M. Tristramfor the LiteBIRD Collaboration, B. van Tentfor the LiteBIRD Collaboration, P. Vielvafor the LiteBIRD Collaboration, I. K. Wehusfor the LiteBIRD Collaboration, B. Westbrookfor the LiteBIRD Collaboration, G. Weymann-Despresfor the LiteBIRD Collaboration, E. J. Wollackfor the LiteBIRD Collaboration, M. Zannonifor the LiteBIRD Collaboration, Y. Zhoufor the LiteBIRD Collaboration

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Brinckmannfor the LiteBIRD Collaboration, E. Calabresefor the LiteBIRD Collaboration, P. Campetifor the LiteBIRD Collaboration, E. Carinosfor the LiteBIRD Collaboration, A. Caronesfor the LiteBIRD Collaboration, F. J. Casasfor the LiteBIRD Collaboration, K. Cheungfor the LiteBIRD Collaboration, L. Clermontfor the LiteBIRD Collaboration, F. Columbrofor the LiteBIRD Collaboration, A. Coppolecchiafor the LiteBIRD Collaboration, F. Cuttaiafor the LiteBIRD Collaboration, P. de Bernardisfor the LiteBIRD Collaboration, T. de Haanfor the LiteBIRD Collaboration, E. de la Hozfor the LiteBIRD Collaboration, S. Della Torrefor the LiteBIRD Collaboration, P. Diego-Palazuelosfor the LiteBIRD Collaboration, G. D'Alessandrofor the LiteBIRD Collaboration, H. K. Eriksenfor the LiteBIRD Collaboration, J. Errardfor the LiteBIRD Collaboration, F. Finellifor the LiteBIRD Collaboration, U. Fuskelandfor the LiteBIRD Collaboration, G. Gallonifor the LiteBIRD Collaboration, M. Gallowayfor the LiteBIRD Collaboration, M. Gervasifor the LiteBIRD Collaboration, T. Ghignafor the LiteBIRD Collaboration, S. Giardiellofor the LiteBIRD Collaboration, C. Gimeno-Amofor the LiteBIRD Collaboration, E. Gjerløwfor the LiteBIRD Collaboration, R. González Gonzálezfor the LiteBIRD Collaboration, A. Gruppusofor the LiteBIRD Collaboration, M. Hazumifor the LiteBIRD Collaboration, S. Henrot-Versilléfor the LiteBIRD Collaboration, L. T. Hergtfor the LiteBIRD Collaboration, K. Ikumafor the LiteBIRD Collaboration, K. Kohrifor the LiteBIRD Collaboration, L. Lamagnafor the LiteBIRD Collaboration, M. Lattanzifor the LiteBIRD Collaboration, C. Leloupfor the LiteBIRD Collaboration, M. Lembofor the LiteBIRD Collaboration, F. Levrierfor the LiteBIRD Collaboration, A. I. Lonappanfor the LiteBIRD Collaboration, M. López-Caniegofor the LiteBIRD Collaboration, G. Luzzifor the LiteBIRD Collaboration, B. Maffeifor the LiteBIRD Collaboration, E. Martínez-Gonzálezfor the LiteBIRD Collaboration, S. Masifor the LiteBIRD Collaboration, S. Matarresefor the LiteBIRD Collaboration, F. T. Matsudafor the LiteBIRD Collaboration, T. Matsumurafor the LiteBIRD Collaboration, S. Michelifor the LiteBIRD Collaboration, M. Migliacciofor the LiteBIRD Collaboration, M. Monellifor the LiteBIRD Collaboration, G. Morgantefor the LiteBIRD Collaboration, B. Motfor the LiteBIRD Collaboration, R. Nagatafor the LiteBIRD Collaboration, T. Namikawafor the LiteBIRD Collaboration, A. Novellifor the LiteBIRD Collaboration, K. Odagirifor the LiteBIRD Collaboration, S. Ogurifor the LiteBIRD Collaboration, R. Omaefor the LiteBIRD Collaboration, L. Paganofor the LiteBIRD Collaboration, D. Paolettifor the LiteBIRD Collaboration, F. Piacentinifor the LiteBIRD Collaboration, M. Pincherafor the LiteBIRD Collaboration, G. Polentafor the LiteBIRD Collaboration, L. Porcellifor the LiteBIRD Collaboration, N. Raffuzzifor the LiteBIRD Collaboration, M. Remazeillesfor the LiteBIRD Collaboration, A. Ritaccofor the LiteBIRD Collaboration, M. Ruiz-Grandafor the LiteBIRD Collaboration, Y. Sakuraifor the LiteBIRD Collaboration, D. Scottfor the LiteBIRD Collaboration, Y. Sekimotofor the LiteBIRD Collaboration, M. Shiraishifor the LiteBIRD Collaboration, G. Signorellifor the LiteBIRD Collaboration, R. M. Sullivanfor the LiteBIRD Collaboration, H. Takakurafor the LiteBIRD Collaboration, L. Terenzifor the LiteBIRD Collaboration, M. Tomasifor the LiteBIRD Collaboration, M. Tristramfor the LiteBIRD Collaboration, B. van Tentfor the LiteBIRD Collaboration, P. Vielvafor the LiteBIRD Collaboration, I. K. Wehusfor the LiteBIRD Collaboration, B. Westbrookfor the LiteBIRD Collaboration, G. Weymann-Despresfor the LiteBIRD Collaboration, E. J. Wollackfor the LiteBIRD Collaboration, M. Zannonifor the LiteBIRD Collaboration, Y. Zhoufor the LiteBIRD Collaboration","doi":"arxiv-2408.03040","DOIUrl":null,"url":null,"abstract":"Large angular scale surveys in the absence of atmosphere are essential for\nmeasuring the primordial $B$-mode power spectrum of the Cosmic Microwave\nBackground (CMB). Since this proposed measurement is about three to four orders\nof magnitude fainter than the temperature anisotropies of the CMB, in-flight\ncalibration of the instruments and active suppression of systematic effects are\ncrucial. We investigate the effect of changing the parameters of the scanning\nstrategy on the in-flight calibration effectiveness, the suppression of the\nsystematic effects themselves, and the ability to distinguish systematic\neffects by null-tests. Next-generation missions such as LiteBIRD, modulated by\na Half-Wave Plate (HWP), will be able to observe polarisation using a single\ndetector, eliminating the need to combine several detectors to measure\npolarisation, as done in many previous experiments and hence avoiding the\nconsequent systematic effects. While the HWP is expected to suppress many\nsystematic effects, some of them will remain. We use an analytical approach to\ncomprehensively address the mitigation of these systematic effects and identify\nthe characteristics of scanning strategies that are the most effective for\nimplementing a variety of calibration strategies in the multi-dimensional space\nof common spacecraft scan parameters. 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Abstract

Large angular scale surveys in the absence of atmosphere are essential for measuring the primordial $B$-mode power spectrum of the Cosmic Microwave Background (CMB). Since this proposed measurement is about three to four orders of magnitude fainter than the temperature anisotropies of the CMB, in-flight calibration of the instruments and active suppression of systematic effects are crucial. We investigate the effect of changing the parameters of the scanning strategy on the in-flight calibration effectiveness, the suppression of the systematic effects themselves, and the ability to distinguish systematic effects by null-tests. Next-generation missions such as LiteBIRD, modulated by a Half-Wave Plate (HWP), will be able to observe polarisation using a single detector, eliminating the need to combine several detectors to measure polarisation, as done in many previous experiments and hence avoiding the consequent systematic effects. While the HWP is expected to suppress many systematic effects, some of them will remain. We use an analytical approach to comprehensively address the mitigation of these systematic effects and identify the characteristics of scanning strategies that are the most effective for implementing a variety of calibration strategies in the multi-dimensional space of common spacecraft scan parameters. We also present Falcons, a fast spacecraft scanning simulator that we developed to investigate this scanning parameter space.

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多维优化 LiteBIRD 空间任务的扫描策略

在没有大气层的情况下进行大角度尺度测量，对于测量宇宙微波背景（CMB）的原始B模式功率谱至关重要。由于这种拟议的测量比 CMB 的温度各向异性要暗三到四个数量级，因此对仪器进行飞行校准和积极抑制系统效应至关重要。我们研究了改变扫描策略参数对飞行中校准效果的影响、对系统效应本身的抑制，以及通过无效检验区分系统效应的能力。像 LiteBIRD 这样由半波板（HWP）调制的下一代飞行任务将能够使用单个探测器来观测偏振，从而无需像以前的许多实验那样结合多个探测器来测量偏振，从而避免了随之而来的系统效应。虽然 HWP 预计会抑制许多系统效应，但其中一些效应仍将存在。我们使用一种分析方法来全面解决这些系统效应的缓解问题，并确定扫描策略的特征，这些特征对于在常见航天器扫描参数的多维空间中实施各种校准策略最为有效。我们还介绍了我们为研究这一扫描参数空间而开发的快速航天器扫描模拟器 Falcons。

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arXiv - PHYS - Instrumentation and Methods for Astrophysics

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