ACTPol: a polarization-sensitive receiver for the Atacama Cosmology Telescope

By M. Niemack, P. Ade, J. Aguirre, F. Barrientos, J. Beall, J. Richard Bond, J. Britton, H. Cho, S. Das, M. Devlin and 32 more. Astronomical Telescopes + Instrumentation, 2010

185 citations recorded by the source corpus.

The six-meter Atacama Cosmology Telescope (ACT) in Chile was built to measure the cosmic microwave background (CMB) at arcminute angular scales. We are building a new polarization sensitive receiver for ACT (ACTPol). ACTPol will characterize the gravitational lensing of the CMB and aims to constrain the sum of the neutrino masses with ~ 0.05 eV precision, the running of the spectral index of inflation-induced fluctuations, and the primordial helium abundance to better than 1 %. Our observing fields will overlap with the SDSS BOSS survey at optical wavelengths, enabling a variety of cross-correlation science, including studies of the growth of cosmic structure from Sunyaev-Zel'dovich observations of clusters of galaxies as well as independent constraints on the sum of the neutrino masses. We describe the science objectives and the initial receiver design.

Subfields: Astronomy and Astrophysics

View Paper: https://www.semanticscholar.org/paper/b63b9629913f3f544c8049ceb620ea644f046b5d

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Citations in the corpus

SPTpol: an instrument for CMB polarization measurements with the South Pole Telescope (2012, methodology): “The SPTpol 150 GHz polarimeter design is based on the generic mm-wave polarimeter development by the TRUCE collaboration that is being used in multiple upcoming and future CMB experiments including ABS(34) and ACTpol.(35) SPTpol detectors represent a branch of this development where TES designs were”
Constraining dark matter-neutrino interactions using the CMB and large-scale structure (2014, background): “Forthcoming polarisation data from e.g. Planck [4], ACTpol [48], POLARBEAR [49] and SPIDER [50] will improve these results and could provide us with a powerful tool to study DM interactions in the future.”
Observational probes of cosmic acceleration (2012, background): “The SPTpol curve is similar to SPT, but it reaches lower masses over a smaller area, while the ACTpol curve reaches similar noise levels to SPT (≈ 20µK, Niemack et al., 2010) over a larger area.”
The Atacama Cosmology Telescope: temperature and gravitational lensing power spectrum measurements from three seasons of data (2013, background): “A new frontier in microwave background experiments will likely be detailed lensing maps from high-resolution polarization measurements (Niemack et al. 2010; Austermann et al. 2012), which have the prospect of constraining dark energy and modiﬁed gravity (e.g., Das & Linder 2012).”
CMB-S4 Science Case, Reference Design, and Project Plan (2019, background): “5) than ongoing and upcoming CMB experiments [428, 429, 49].”
The Atacama Cosmology Telescope: CMB polarization at 200 < ℓ < 9000 (2014, unknown): “It was decommissioned and replaced by the polarization-sensitive ACTPol camera [64] in 2013.”
The Evolution of the Intergalactic Medium (2015, background): “Constraints on the kSZ should improve significantly in the next couple years with ACTPol and SPTPol efforts (Niemack et al. 2010; Austermann et al. 2012).”
The Hyper Suprime-Cam SSP Survey: Overview and Survey Design (2017, methodology): “In particular, we consider the arc-minute-resolution, highsensitivity CMB survey by the Atacama Cosmology Telescope (ACT; Swetz et al. 2011) in Chile, and its polarization extension ACTPol (Thornton et al. 2016); X-ray data from the XMM-XXL survey (Pierre et al. 2016) and eROSITA2; near/mid-infrared”
PRISM (Polarized Radiation Imaging and Spectroscopy Mission): an extended white paper (2013, methodology): “ in the data analysis stage, including BICEP/Keck [18], SPTpol [136], ABS [1], EBEX [71], POLARBEAR [174], and a few more scheduled for the deployment within a year or so (e.g., QUIJOTE [182], ACTpol [144] and SPIDER [77]). These experiments should start producing results within the next few years, ”
General Relativity and Cosmology: Unsolved Questions and Future Directions (2016, background): “edu), Atacama Cosmology Telescope polarisation-sensitive receiver (ACTPol) [529], SPTPol, Spider (http://spider.”
THE ATACAMA COSMOLOGY TELESCOPE: THE POLARIZATION-SENSITIVE ACTPol INSTRUMENT (2016, background): “The ACTPol receiver (Niemack et al. 2010) contains three different sets of of mm-wave optics, detector arrays, and associated multiplexing readouts.”
Double-Disk Dark Matter (2013, methodology): “Improved measurements of ∆NCMBeff,ν will also come from ACTpol [60] and SPTpol [61].”
Inflation and String Theory (2014, methodology): “There are many experiments looking for B-modes on degree scales, including KeckArray [139], EBEX [140], SPIDER [141], ABS [142], and CLASS [143]); and on arcminute scales, including POLARBEAR [144], SPTpol [145], and ACTpol [146]).”
LATE-TIME COSMOLOGY WITH 21 cm INTENSITY MAPPING EXPERIMENTS (2014, methodology): “Future high-resolution experiments such as ACTPol (Niemack et al. 2010) and SPTpol (Austermann et al. 2012) will be able to measure weak lensing of the CMB to sufficient accuracy that constraints from the CMB alone should be competitive with IM (and redshift surveys).”