Optical designing of LiteBIRD

Hajime Sugai, Shingo Kashima, Kimihiro Kimura, Tomotake Matsumura, Masanori Inoue, Makoto Ito, Toshiyuki Nishibori, Yutaro Sekimoto, Hirokazu Ishino, Yuki Sakurai, Hiroaki Imada, Takenori Fujii

Research output: Chapter in Book/Report/Conference proceedingConference contribution

7 Citations (Scopus)

Abstract

LiteBIRD aims to detect the footprint of the primordial gravitational wave on the Cosmic Microwave Background (CMB) in a form of polarization pattern called B mode. In order to separate CMB from the Galactic emission, our measurements cover 35 GHz to 450 GHz. The LiteBIRD optics consists of two telescopes: A crossed Dragone type for lower frequencies, which provides a compact configuration with a wide field of view, and a refractor type for higher frequencies. The whole optical system is cooled down to around 5 K to minimize the thermal emission. We use two kinds of approaches of designing calculations as well as the experimental confirmation particularly for the lower frequency telescope.

Original languageEnglish
Title of host publicationSpace Telescopes and Instrumentation 2016: Optical, Infrared, and Millimeter Wave
PublisherSPIE
Volume9904
ISBN (Electronic)9781510601871
DOIs
Publication statusPublished - 2016
EventSpace Telescopes and Instrumentation 2016: Optical, Infrared, and Millimeter Wave - Edinburgh, United Kingdom
Duration: Jun 26 2016Jul 1 2016

Other

OtherSpace Telescopes and Instrumentation 2016: Optical, Infrared, and Millimeter Wave
CountryUnited Kingdom
CityEdinburgh
Period6/26/167/1/16

Keywords

  • Cosmic microwave background
  • Millimeter wave
  • Optical design
  • Polarization
  • Primordial gravitational wave
  • Space telescope

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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    Sugai, H., Kashima, S., Kimura, K., Matsumura, T., Inoue, M., Ito, M., Nishibori, T., Sekimoto, Y., Ishino, H., Sakurai, Y., Imada, H., & Fujii, T. (2016). Optical designing of LiteBIRD. In Space Telescopes and Instrumentation 2016: Optical, Infrared, and Millimeter Wave (Vol. 9904). [99044H] SPIE. https://doi.org/10.1117/12.2232008