Overview of the Medium and High Frequency Telescopes of the LiteBIRD satellite mission
L. Montier, B. Mot, P. de Bernardis, B. Maffei, G. Pisano, F., Columbro, J.E. Gudmundsson, S. Henrot-Versill\'e, L. Lamagna, J. Montgomery,, T. Prouv\'e, M. Russell, G. Savini, S. Stever, K.L. Thompson, M. Tsujimoto,, C. Tucker, B. Westbrook, P.A.R. Ade, A. Adler, E. Allys

TL;DR
This paper provides an overview of the design and technical challenges of the Medium- and High-Frequency Telescopes of the LiteBIRD satellite, aimed at detecting primordial gravitational waves via CMB polarization measurements.
Contribution
It introduces the design details and challenges of the MHFT, including cryogenic cooling, optical components, and detector arrays, for the LiteBIRD mission.
Findings
Design of cryogenic refractive telescopes cooled to 5K
Implementation of a rotating half-wave plate as the first optical element
Deployment of over three thousand TES detectors at 100mK
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 34GHz to 448GHz. 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 (89-224GHz) and the High-Frequency Telescope (166-448GHz), the so-called MHFT, under European responsibility, which are two cryogenic refractive telescopes cooled down to 5K. They include a continuous rotating…
Peer Reviews
No public reviews on file for this paper yet. If you reviewed it on a platform where reviews are public (OpenReview, ICLR, NeurIPS, ICML), you can paste yours below so the community can read it here.
Videos
No videos yet. Explain this paper in a talk, walkthrough, or lecture? Add one.
