@inproceedings{39d12a65afe24e588105cfbd1b10cebe,
title = "Systematics of an ambient-temperature, rapidly-rotating half-wave plate",
abstract = "In these proceedings, we summarize our in-field evaluation of temperature-to-polarization leakage associated with the use of a continuously-rotating, ambient-temperature half-wave plate (HWP) on the Atacama B-Mode Search (ABS) experiment. Using two seasons of data, we demonstrate scalar leakage of ~ 0.01%. This is consistent with model expectations and an order of magnitude better than any previously-reported leakage. We constrain higher-order dipole and quadrupole leakage terms to be < 0.06% (95% confidence). Without any mitigation from scan cross-linking or boresight rotation, this corresponds to an upper limit on systematic errors in the tensor-to-scalar ratio r ≤ 0.01. The HWP significantly reduces temperature-to-polarization leakage systematic errors for ABS and shows the promise of fast polarization modulation with HWPs for future experiments. Full details can be found in Ref. 1.",
keywords = "B-mode polarization, Cosmic microwave background (CMB), Half-wave plates, Polarization modulators",
author = "T. Essinger-Hileman and A. Kusaka and Appel, {J. W.} and P. Gallardo and Irwin, {K. D.} and N. Jarosik and Nolta, {M. R.} and Page, {L. A.} and Parker, {L. P.} and S. Raghunathan and Sievers, {J. L.} and Simon, {S. M.} and Staggs, {S. T.} and K. Visnjic",
note = "Publisher Copyright: {\textcopyright} 2016 SPIE.; Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy VIII ; Conference date: 28-06-2016 Through 01-07-2016",
year = "2016",
doi = "10.1117/12.2232711",
language = "English (US)",
series = "Proceedings of SPIE - The International Society for Optical Engineering",
publisher = "SPIE",
editor = "Jonas Zmuidzinas and Holland, {Wayne S.}",
booktitle = "Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy VIII",
address = "United States",
}