UCL Discovery
UCL home » Library Services » Electronic resources » UCL Discovery

Overview of the medium and high frequency telescopes of the LiteBIRD space mission

Montier, L; Mot, B; de Bernardis, P; Maffei, B; Pisano, G; Columbro, F; Gudmundsson, JE; ... Zonca, A; + view all (2020) Overview of the medium and high frequency telescopes of the LiteBIRD space mission. In: Space Telescopes and Instrumentation 2020: Optical, Infrared, and Millimeter Wave. SPIE: Online conference. Green open access

[thumbnail of 114432G.pdf]
Preview
Text
114432G.pdf - Published Version

Download (7MB) | Preview

Abstract

LiteBIRD is a JAXA-led Strategic Large-Class mission designed to search for the existence of the primordial gravitational waves produced during the inflationary phase of the Universe, through the measurements of their imprint onto the polarization of the cosmic microwave background (CMB). These measurements, requiring unprecedented sensitivity, will be performed over the full sky, at large angular scales, and over 15 frequency bands from 34 GHz to 448 GHz. The LiteBIRD instruments consist of three telescopes, namely the Low-, Medium-and High-Frequency Telescope (respectively LFT, MFT and HFT). We present in this paper an overview of the design of the Medium-Frequency Telescope (89{224 GHz) and the High-Frequency Telescope (166{448 GHz), the so-called MHFT, under European responsibility, which are two cryogenic refractive telescopes cooled down to 5 K. They include a continuous rotating half-wave plate as the first optical element, two high-density polyethylene (HDPE) lenses and more than three thousand transition-edge sensor (TES) detectors cooled to 100 mK. We provide an overview of the concept design and the remaining specific challenges that we have to face in order to achieve the scientific goals of LiteBIRD.

Type: Proceedings paper
Title: Overview of the medium and high frequency telescopes of the LiteBIRD space mission
Event: SPIE Astronomical Telescopes + Instrumentation, 2020
Dates: 14 December 2020 - 18 December 2020
Open access status: An open access version is available from UCL Discovery
DOI: 10.1117/12.2562243
Publisher version: https://doi.org/10.1117/12.2562243
Language: English
Additional information: This version is the version of record. For information on re-use, please refer to the publisher’s terms and conditions.
Keywords: Telescopes, Space operations, Refractor telescopes, Sensors, Cryogenics, Lenses, Microwave radiation, Optical , components, Polarization, Wave plates
UCL classification: UCL
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Space and Climate Physics
URI: https://discovery.ucl.ac.uk/id/eprint/10121615
Downloads since deposit
49Downloads
Download activity - last month
Download activity - last 12 months
Downloads by country - last 12 months

Archive Staff Only

View Item View Item