Journal article
Performance of a continuously rotating half-wave plate on the POLARBEAR telescope
S Takakura, M Aguilar, Y Akiba, K Arnold, C Baccigalupi, D Barron, S Beckman, D Boettger, J Borrill, S Chapman, Y Chinone, A Cukierman, A Ducout, T Elleflot, J Errard, G Fabbian, T Fujino, N Galitzki, N Goeckner-Wald, NW Halverson Show all
Journal of Cosmology and Astroparticle Physics | IOP PUBLISHING LTD | Published : 2017
Abstract
A continuously rotating half-wave plate (CRHWP) is a promising tool to improve the sensitivity to large angular scales in cosmic microwave background (CMB) polarization measurements. With a CRHWP, single detectors can measure three of the Stokes parameters, I, Q and U, thereby avoiding the set of systematic errors that can be introduced by mismatches in the properties of orthogonal detector pairs. We focus on the implementation of CRHWPs in large aperture telescopes (i.e. the primary mirror is larger than the current maximum half-wave plate diameter of ∼0.5 m), where the CRHWP can be placed between the primary mirror and focal plane. In this configuration, one needs to address the intensity ..
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Grants
Awarded by Centre National d’Etudes Spatiales
Funding Acknowledgements
S. Takakura was supported by Grant-in-Aid for JSPS Research Fellow. The POLARBEAR project is funded by the National Science Foundation under Grants No. AST-0618398 and No. AST-1212230. The James Ax Observatory operates in the Parque Astronomico Atacama in Northern Chile under the auspices of the Comision Nacional de Investigacion Cientfica y Tecnologica de Chile (CONICYT). This research used resources of the Central Computing System, owned and operated by the Computing Research Center at KEK, the HPCI system (Project ID: hp150132), and the National Energy Research Scientific Computing Center, a DOE Office of Science User Facility supported by the Office of Science of the U.S. Department of Energy under Contract No. DE-AC02-05CH11231. In Japan, this work was supported by MEXT KAKENHI Grant Numbers JP15H05891, 21111002, JSPS KAKENHI Grant Numbers JP26220709, JP24111715, and JSPS Core-to-Core Program, A. Advanced Research Networks. In Italy, this work was supported by the RADIOFOREGROUNDS grant of the European Union's Horizon 2020 research and innovation programme (COMPET- 052015, grant agreement number 687312) as well as by the INDARK INFN Initiative. MA acknowledges support from CONICYT's UC Berkeley-Chile Seed Grant (CLAS fund) Number 77047, Fondecyt project 1130777, DFI postgraduate scholarship program and DFI Postgraduate Competitive Fund for Support in the Attendance to Scientific Events. DB acknowledges support from NSF grant AST-1501422. GF acknowledges the support of the CNES postdoctoral program. JP acknowledges support from the Science and Technology Facilities Council [grant number ST/L000652/1] and from the European Research Council under the European Union's Seventh Framework Programme (FP/2007-2013) / ERC Grant Agreement No. [616170]. CR acknowledges support from an Australian Research Council's Future Fellowship (FT150100074).