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Mission design of LiteBIRD
- Source :
- Journal of Low Temperature Physics September 2014, Volume 176, Issue 5-6, pp 733-740
- Publication Year :
- 2013
-
Abstract
- LiteBIRD is a next-generation satellite mission to measure the polarization of the cosmic microwave background (CMB) radiation. On large angular scales the B-mode polarization of the CMB carries the imprint of primordial gravitational waves, and its precise measurement would provide a powerful probe of the epoch of inflation. The goal of LiteBIRD is to achieve a measurement of the characterizing tensor to scalar ratio $r$ to an uncertainty of $\delta r=0.001$. In order to achieve this goal we will employ a kilo-pixel superconducting detector array on a cryogenically cooled sub-Kelvin focal plane with an optical system at a temperature of 4~K. We are currently considering two detector array options; transition edge sensor (TES) bolometers and microwave kinetic inductance detectors (MKID). In this paper we give an overview of LiteBIRD and describe a TES-based polarimeter designed to achieve the target sensitivity of 2~$\mu$K$\cdot$arcmin over the frequency range 50 to 320~GHz.<br />Comment: 6 pages, 2 figures
Details
- Database :
- arXiv
- Journal :
- Journal of Low Temperature Physics September 2014, Volume 176, Issue 5-6, pp 733-740
- Publication Type :
- Report
- Accession number :
- edsarx.1311.2847
- Document Type :
- Working Paper
- Full Text :
- https://doi.org/10.1007/s10909-013-0996-1