THE ATACAMA COSMOLOGY TELESCOPE: THE POLARIZATION-SENSITIVE ACTPol INSTRUMENT

By R. Thornton, P. Ade, S. Aiola, F. E. Angile, M. Amiri, J. Beall, D. Becker, H.-M. Cho, S. Choi, P. Corlies and 46 more. Astrophysical Journal Supplement Series, 2016

233 citations recorded by the source corpus.

The Atacama Cosmology Telescope (ACT) makes high angular resolution measurements of anisotropies in the Cosmic Microwave Background (CMB) at millimeter wavelengths. We describe ACTPol, an upgraded receiver for ACT, which uses feedhorn-coupled, polarization-sensitive detector arrays, a 3° field of view, 100 mK cryogenics with continuous cooling, and meta material antireflection coatings. ACTPol comprises three arrays with separate cryogenic optics: two arrays at a central frequency of 148 GHz and one array operating simultaneously at both 97 GHz and 148 GHz. The combined instrument sensitivity, angular resolution, and sky coverage are optimized for measuring angular power spectra, clusters via the thermal Sunyaev–Zel’dovich (SZ) and kinetic SZ signals, and CMB lensing due to large-scale structure. The receiver was commissioned with its first 148 GHz array in 2013, observed with both 148 GHz arrays in 2014, and has recently completed its first full season of operations with the full suite of three arrays. This paper provides an overview of the design and initial performance of the receiver and related systems.

Subfields: Astronomy and Astrophysics, Instrumentation

View Paper: https://www.semanticscholar.org/paper/59753e97bcc8773d316c32422d428f79d59098d8

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Astronomy and Astrophysics

In Instrumentation

Citations in the corpus

CMB-S4 Science Case, Reference Design, and Project Plan (2019, background): “Shown are the current limits from Planck [272] and forecasts for Stage-3 experiments (CMB-S3, such as AdvACT [287]), CMB-S4, and a cosmic-variance-limited experiment (CV-limited); see also [286].”
The Atacama Cosmology Telescope: A Catalog of >4000 Sunyaev–Zel’dovich Galaxy Clusters (2020, background): “…(Henderson et al. 2016; Ho et al. 2017; Choi et al. 2018), combining this with all observations by ACT from 2008 to 2018 (Naess et al. 2020, N20 hereafter; details of previous generations of ACT instrumentation can be found in Fowler et al. 2007; Swetz et al. 2011; and Thornton et al. 2016).”
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”
The Atacama Cosmology Telescope: DR6 Gravitational Lensing Map and Cosmological Parameters (2023, background): “…receiver containing arrays of superconducting transition-edge sensor bolometers, sensitive to both temperature and polarization at frequencies centered roughly at 30, 40, 97, 149 and 225 GHz (Fowler et al. 2007; Thornton et al. 2016); we denote these bands as f030, f040, f090, f150 and f220.”
The Atacama Cosmology Telescope: A Measurement of the DR6 CMB Lensing Power Spectrum and Its Implications for Structure Growth (2023, methodology): “The Advanced ACTPol (AdvACT) receivers fitted to the telescope were equipped with arrays of superconducting transitionedge-sensor bolometers, sensitive to both temperature and polarization at frequencies of 30, 40, 97, 149 and 225 GHz7 (Fowler et al. 2007; Thornton et al. 2016).”
The first-year shear catalog of the Subaru Hyper Suprime-Cam Subaru Strategic Program Survey (2017, methodology): “The major datasets that offer unique synergy with HSC data are the arc-minute-resolution, high-sensitivity 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 XMM-XXL (Pierre et al. 2016) and e”
Elucidating ΛCDM: Impact of Baryon Acoustic Oscillation Measurements on the Hubble Constant Discrepancy (2017, background): “…the final WMAP 9-year analysis (Bennett et al. 2013; Hinshaw et al. 2013), the Atacama Cosmology Telescope polarization-sensitive receiver (ACTPol; Thornton et al. 2016; Louis et al. 2017; Sherwin et al. 2016) two-season survey, covering 548 deg2, and the 2500 deg2 South Pole Telescope…”