Sensitivity Modeling for LiteBIRD

Hasebe, Takashi; Ade, Peter A. R.; Adler, Alexandre; Allys, Erwan; Alonso, David; Arnold, K.; Auguste, Didier; Aumont, J.; Aurlien, R.; Austermann, J.; Azzoni, S.; Baccigalupi, C.; Banday, A. J.; Banerji, R.; Barreiro, R. B.; Bartolo, N.; Basak, S.; Battistelli, E. S.; Bautista, Linda; Beall, James A.; Beck, Dominic; Beckman, S.; Benabed, K.; Bermejo-Ballesteros, Juan; Bersanelli, M.; Bonis, J.; Borrill, J.; Bouchet, F. R.; Boulanger, F.; Bounissou, Sophie; Brilenkov, M.; Brown, Michael L.; Bucher, M.; Calabrese, E.; Calvo, M.; Campeti, Paolo; Carones, Alessandro; Casas, F. J.; Catalano, A.; Challinor, A.; Chan, V.; Cheung, K.; Chinone, Yuji; Cliche, J. F.; Columbro, F.; Coulton, William; Cubas, Javier; Cukierman, A.; Curtis, D. W.; D’Alessandro, G.; Dachlythra, Konstantina; Bernardis, P. de; Haan, T. de; Hoz, E. de la; Petris, M. De; Torre, S. Della; Dickinson, C.; Diego-Palazuelos, P.; Dobbs, Matt; Dotani, Tadayasu; Douillet, D.; Duband, L.; Ducout, A.; Duff, Shannon M.; Duval, J.M.; Ebisawa, Ken; Elleflot, T.; Eriksen, H. K.; Errard, Josquin; Essinger‐Hileman, T.; Finelli⋆, F.; Flauger, Raphael; Franceschet, C.; Fuskeland, U.; Galli, S.; Galloway, M.; Ganga, K.; Gao, Jianrong; Génova-Santos, R. T.; Gerbino, Martina; Gervasi, M.; Ghigna, Tommaso; Giardiello, S.; Gjerløw, E.; Grądziel, M.; Grain, Julien; Grandsire, L.; Grupp, F.; Gruppuso, A.; Gudmundsson, J. E.; Halverson, N. W.; Hamilton, Jean-Christophe; Hargrave, Peter Charles; Hasegawa, M.; Hattori, Makoto; Hazumi, M.; Henrot-Versillé, S.; Hergt, L. T.; Herman, D.; Herranz, D.; Hill, Charles A.; Hilton, G. C.; Hivon, E.; Hložek, Renée; D., Hoang, T.; Hornsby, Amber; Hoshino, Yurika; Hubmayr, Johannes; Ichiki, Kiyotomo; Iida, Teruhito; Imada, Hiroaki; Ishimura, Kosei; Ishino, H.; Jaehnig, G.; Jones, M. E.; Kaga, Tooru; Kashima, Shingo; Katayama, N.; Kato, A.; Kawasaki, T.; Keskitalo, R.; Kisner, T. S.; Kobayashi, Yohei; Kogiso, Nozomu; Kogut, A.; Kohri, Kazunori; Komatsu, Eiichiro; Komatsu, Kunimoto; Konishi, Kuniaki; Krachmalnicoff, N.; Kreykenbohm, I.; Kuo, Chao-Lin; Kushino, A.; Lamagna, L.; Lanen, Jeff Van; Laquaniello, G.; Lattanzi, M.; Lee, A. T.; Leloup, C.; Levrier, F.; Linder, Eric V.; Louis, Thibaut; Luzzi, G.; Macías-Pérez, J. F.; Maciaszek, T.; Maffei, B.; Maino, D.; Maki, M.; Mandelli, S.; Maris, M.; Martínez-González, E.; Masi, S.; Massa, M.; Matarrese, S.; Matsuda, Frederick; Matsumura, Tomotake; Mele, L.; Mennella, A.; Migliaccio, M.; Minami, Y.; Mitsuda, Kazuhisa; Moggi, A.; Monfardini, A.; Montgomery, J.; Montier, L.; Morgante, G.; Mot, B.; Murata, Yasuhiro; Murphy, John A.; Nagai, Makoto; Nagano, Y.; Nagasaki, T.; Nagata, Ryo; Nakamura, Shōgo; Nakano, R.; Namikawa, Toshiya; Nati, F.; Natoli, P.; Nerval, S.; Nishibori, Toshiyuki; Nishino, Haruki; Noviello, F.; O’Sullivan, C.; Odagiri, Kimihide; Ogawa, H.; Oguri, S.; Ohsaki, Hiroyuki; Ohta, I.; Okada, Nozomi; Pagano, L.; Paiella, A.; Paoletti, D.; Passerini, A.; Patanchon, G.; Pelgrim, V.; Peloton, J.; Piacentini, F.; Piat, M.; Pisano, G.; Polenta, G.; Poletti, D.; Prouvé, T.; Puglisi, Giuseppe; Rambaud, D.; Raum, Christopher; Realini, S.; Reinecke, M.; Remazeilles, M.; Ritacco, A.; Roudil, G.; Rubiño-Martín, J. A.; Russell, M.; Sakurai, Haruyuki; Sakurai, Y.; Sandri, M.; Sasaki, Misao; Savini, G.; Scott, D.; Seibert, Joseph; Sekímoto, Yutaro; Sherwin, Blake D.; Shinozaki, Kazuo; Shiraishi, Maresuke; Shirron, Peter; Signorelli, G.; Smecher, G.; Spinella, F.; Stever, S.; Stompor, R.; Sugiyama, S.; Sullivan, Raelyn M.; Suzuki, Aritoki; Suzuki, Junya; Svalheim, T. L.; Switzer, Eric R.; Takaku, Ryota; Takakura, Hayato; Takakura, S.; Takase, Yusuke; Takeda, Youichi; Tartari, A.; Tavagnacco, D.; Taylor, Angela C.; Taylor, Ellen; Terao, K.; Thermeau, Jean‐Pierre; Thommesen, H.; Thompson, K. L.; Thorne, Ben; Toda, Takayuki; Tomasi, M.; Tominaga, M.; Trappe, N.; Tristram, M.; Tsuji, Masatsugu; Tsujimoto, Masahiro; Tucker, C.; Ullom, Joe; Vacher, L.; Vermeulen, Gérard; Vielva, P.; Villa, F.; Vissers, Michael; Vittorio, N.; Wandelt, B. D.; Wang, W.; Watanuki, K.; Wehus, I. K.; Weller, J.; Westbrook, Benjamin; Wilms, J.; Winter, B.; Wollack, Edward J.; Yamasaki, Noriko Y.; Yoshida, Tetsuya; Yumoto, Junji; Zacchei, A.; Zannoni, M.; Zonca, A.

doi:10.1007/s10909-022-02921-7

J Low Temp Phys

2022

DOI: 10.1007/s10909-022-02921-7

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Sensitivity Modeling for LiteBIRD

Takashi Hasebe

Peter A. R. Ade²,

Alexandre Adler³

et al.

Abstract: LiteBIRD is a future satellite mission designed to observe the polarization of the cosmic microwave background radiation in order to probe the inflationary universe. LiteBIRD is set to observe the sky using three telescopes with transition-edge sensor bolometers. In this work we estimated the LiteBIRD instrumental sensitivity using its current design. We estimated the detector noise due to the optical loadings using physical optics and ray-tracing simulations. The noise terms associated with thermal carrier an… Show more

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2024

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Cited by 3 publications

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Systematic effects induced by half-wave plate differential optical load and TES nonlinearity for LiteBIRD

Micheli,

de Haan,

Ghigna

et al. 2024

Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy XII

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LiteBIRD, a forthcoming satellite mission, aims to measure the polarization of the Cosmic Microwave Background (CMB) across the entire sky. The experiment will employ three telescopes, Transition-Edge Sensor (TES) bolometers and rotating Half-Wave Plates (HWPs) at cryogenic temperatures to ensure high sensitivity and systematic effects mitigation. This study is focused on the Mid-and High-Frequency Telescopes (MHFT), which will use rotating metal mesh HWPs. We investigate how power variations due to HWP differential emissivity and transmittance combine with TES nonlinear responsivity, resulting in an effective instrumental polarization. We present the results of simulations for the current HWP design, modeling the TES deviation from linearity as a second-order response. We quantify the level of acceptable residual nonlinearity assuming the mission requirement on the tensor-to-scalar ratio, δr < 0.001. Moreover, we provide an accuracy requirement on the measurement of TES responsivity nonlinearity level for MHFT channels. Lastly, we present possible mitigation methods that will be developed in future studies.

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Systematic effects induced by half-wave plate differential optical load and TES nonlinearity for LiteBIRD

Micheli,

de Haan,

Ghigna

et al. 2024

Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy XII

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Sidelobe optical simulations of the LiteBIRD low-frequency telescope and payload module

Matsuda,

Nagata,

Odagiri

et al. 2024

Space Telescopes and Instrumentation 2024: Optical, Infrared, and Millimeter Wave

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LiteBIRD is a JAXA-led international project aimed to make high sensitivity measurements of the primordial B modes through cosmic microwave background (CMB) polarization observations. The Low-Frequency Telescope (LFT) is a modified crossed Dragone reflective telescope with a 18 • × 9 • field-of-view across the 34-161 GHz. To achieve the required observational sensitivity, the telescope's sidelobe response must be characterized to high precision to minimize signal contamination systematic effects from galactic and foreground emission. We report on the development of LFT optical simulation models that include the reflector optics, optimized serrations, finite absorptivity baffling, and V-grooves, and characterize the LFT sidelobes accounting for multiple reflection and diffraction optical effects. We find that the implementation of triangular and cos 2 shaped serrations on the primary and secondary reflectors are effective in reducing asymmetric sidelobe power fluctuations to ≤ 1.42×10 −4 and ≤ 1.20 × 10 −4 , respectively, at 34 GHz at 5.5 • ≤ θ beam ≤ 35 • from the beam center. Without telescope baffling, the LFT optics show prominent direct sidelobe and diffuse triple reflection sidelobes with peak powers of ≤ −35.49 dB and ≤ −38.65 dB, respectively. It was found that implementing a finite absorptivity focal plane (FP) hood and forebaffle allows for effectively mitigating these sidelobes to ≤ −58.66 dB at 34 and 42 GHz for θ > 45 • from boresight. Further including V-grooves in the optical simulation model, it was found that the V-grooves attenuate the far sidelobe power at El < −50 • to ≤ −74.8 dB. All these far-sidelobe features are found to be below the LiteBIRD sidelobe knowledge requirement levels.

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Development of the Low Frequency Telescope focal plane detector arrays for LiteBIRD

Ghigna,

Suzuki,

Westbrook

et al. 2024

Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy XII

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LiteBIRD, a forthcoming JAXA mission, aims to accurately study the microwave sky within the 40-400 GHz frequency range divided into 15 distinct nominal bands. The primary objective is to constrain the CMB inflationary signal, specifically the primordial B-modes. LiteBIRD targets the CMB B-mode signal on large angular scales, where the primordial inflationary signal is expected to dominate, with the goal of reaching a tensor-toscalar ratio sensitivity of σ r ∼ 0.001. LiteBIRD frequency bands will be split among three telescopes, with some overlap between telescopes for better control of systematic effects. Here we report on the development status of the detector arrays for the Low Frequency Telescope (LFT), which spans the 34-161 GHz range, with 12 bands subdivided between four types of trichroic pixels consisting of lenslet-coupled sinuous antennas. The signal from the antenna is bandpass filtered and sensed by AlMn Transition-Edge Sensors (TES). We provide an update on the status of the design and development of LiteBIRD's LFT LF1 (40-60-78 GHz), LF2 (50-68-89 GHz) pixels. We discuss design choices motivated by LiteBIRD scientific goals. In particular we focus on the details of the optimization of the design parameters of the sinuous antenna, on-chip bandpass filters, cross-under and impedance transformers and all the RF components that define the LF1 and LF2 pixel detection chain. We present this work in the context of the technical challenges and physical constraints imposed by the finite size of the instrument.

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Sensitivity Modeling for LiteBIRD

Cited by 3 publications

References 6 publications

Systematic effects induced by half-wave plate differential optical load and TES nonlinearity for LiteBIRD

Systematic effects induced by half-wave plate differential optical load and TES nonlinearity for LiteBIRD

Sidelobe optical simulations of the LiteBIRD low-frequency telescope and payload module

Development of the Low Frequency Telescope focal plane detector arrays for LiteBIRD

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