SPTpol: an instrument for CMB polarization measurements with the South Pole Telescope

By J. Austermann, K. Aird, J. Beall, D. Becker, A. Bender, B. Benson, L. Bleem, J. Britton, J. Carlstrom, C. Chang and 51 more. Other Conferences, 2012

173 citations recorded by the source corpus.

SPTpol is a dual-frequency polarization-sensitive camera that was deployed on the 10-meter South Pole Telescope in January 2012. SPTpol will measure the polarization anisotropy of the cosmic microwave background (CMB) on angular scales spanning an arcminute to several degrees. The polarization sensitivity of SPTpol will enable a detection of the CMB “B-mode” polarization from the detection of the gravitational lensing of the CMB by large scale structure, and a detection or improved upper limit on a primordial signal due to inationary gravity waves. The two measurements can be used to constrain the sum of the neutrino masses and the energy scale of ination. These science goals can be achieved through the polarization sensitivity of the SPTpol camera and careful control of systematics. The SPTpol camera consists of 768 pixels, each containing two transition-edge sensor (TES) bolometers coupled to orthogonal polarizations, and a total of 1536 bolometers. The pixels are sensitive to light in one of two frequency bands centered at 90 and 150 GHz, with 180 pixels at 90 GHz and 588 pixels at 150 GHz. The SPTpol design has several features designed to control polarization systematics, including: singlemoded feedhorns with low cross-polarization, bolometer pairs well-matched to dfference atmospheric signals, an improved ground shield design based on far-sidelobe measurements of the SPT, and a small beam to reduce temperature to polarization leakage. We present an overview of the SPTpol instrument design, project status, and science projections.

Subfields: Astronomy and Astrophysics

View Paper: https://www.semanticscholar.org/paper/0285fdefd560cd2a3a59dab0a240bb8bcb48eb97

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Citations in the corpus

A MEASUREMENT OF SECONDARY COSMIC MICROWAVE BACKGROUND ANISOTROPIES FROM THE 2500 SQUARE-DEGREE SPT-SZ SURVEY (2014, background): “The SPT is currently observing 500 deg2 with the SPTpol camera which will result in substantially lower noise at 95 and 150 GHz (Austermann et al. 2012).”
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).”
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]).”
The SPTpol Extended Cluster Survey (2019, methodology): “This effect results in a decrement at the two channels measured by the SPTpolreceiver; for a nonrelativistic thermal SZ spectrum the effective band centers are 95.9 and 148.5GHz.88 To identify candidate galaxy clusters, we use a spatialspectral filter designed to optimally extract thermal SZ cluster”
Double-Disk Dark Matter (2013, methodology): “Improved measurements of ∆NCMBeff,ν will also come from ACTpol [60] and SPTpol [61].”
GALAXY CLUSTERS DISCOVERED VIA THE SUNYAEV–ZEL'DOVICH EFFECT IN THE 2500-SQUARE-DEGREE SPT-SZ SURVEY (2014, methodology): “The program of galaxy cluster science with the SPT continues with the currently fielded SPTpol receiver (Austermann et al. 2012) and will expand further with the expected deployment of the SPT-3G receiver (Benson et al. 2014).”
Constraining dark matter-neutrino interactions using the CMB and large-scale structure (2014, unknown): “The data points in the BB spectrum are recent measurements from the SPTpol experiment [39], where the three datasets correspond to (Ê150φ̂CIB)× B̂(150), (Ê95φ̂CIB)× B̂(150) and (Ê150φ̂CIB)× B̂(150) χ respectively in ref.”
Measurements of the Temperature and E-mode Polarization of the CMB from 500 Square Degrees of SPTpol Data (2017, methodology): “In this paper, we report improved measurements of the E-mode angular auto-power spectrum (EE) and the temperature-E-mode cross-power spectrum (TE) using three seasons of 150 GHz data taken with the SPTpol instrument (Austermann et al. 2012).”
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).”
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).”
CMB-S4: Forecasting Constraints on Primordial Gravitational Waves (2020, background): “…X 2018); POLARBEAR (Lee et al. 2008; Kermish et al. 2012; Polarbear Collaboration et al. 2019); QUIET (Lawrence et al. 2004; Araujo et al. 2012); SPIDER (Montroy et al. 2006; Fraisse et al. 2013; Gualtieri et al. 2018); SPTpol (McMahon et al. 2009; Austermann et al. 2012; Sayre et al. 2020).”