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The Simons Observatory: Science Goals and Forecasts for the Enhanced Large Aperture Telescope
The Simons Observatory Collaboration, M. Abitbol, I. Abril-Cabezas +419
We describe updated scientific goals for the wide-field, millimeter-wave survey that will be produced by the Simons Observatory (SO). Significant upgrades to the 6-meter SO Large A…
Wide Field High Cadence CMB Survey Designs for Chilean Telescopes
Haruki Ebina, Reijo Keskitalo, Julian Borrill +5
We present new wide field survey strategies for Chilean Large Aperture Telescopes (LAT) measuring the Cosmic Microwave Background (CMB), which we call Sinusoidal Modulated High Cad…
In situ Performance of the Low Frequency Arrayfor Advanced ACTPol
Yaqiong Li, Jason E. Austermann, James A. Beall +24
The Advanced Atacama Cosmology Telescope Polarimeter (AdvACT) \cite{thornton} is an upgrade for the Atacama Cosmology Telescope using Transition Edge Sensor (TES) detector arrays t…
The Simons Observatory: Magnetic Sensitivity Measurements of Microwave SQUID Multiplexers
Eve M. Vavagiakis, Zeeshan Ahmed, Aamir Ali +30
The Simons Observatory (SO) will be a cosmic microwave background (CMB) survey experiment with three small-aperture telescopes and one large-aperture telescope, which will observe…
The Atacama Cosmology Telescope: DR5 maps of 18,000 square degrees of the microwave sky from ACT 2008-2018 data
Sigurd Naess, Simone Aiola, Jason E. Austermann +59
This paper presents a maximum-likelihood algorithm for combining sky maps with disparate sky coverage, angular resolution and spatially varying anisotropic noise into a single map…
Simons Observatory Microwave SQUID Multiplexing Readout -- Cryogenic RF Amplifier and Coaxial Chain Design
Mayuri Sathyanarayana Rao, Maximiliano Silva-Feaver, Aamir Ali +33
The Simons Observatory (SO) is an upcoming polarization-sensitive Cosmic Microwave Background (CMB) experiment on the Cerro Toco Plateau (Chile) with large overlap with other optic…
Characterization of Transition Edge Sensors for the Simons Observatory
Jason R. Stevens, Nicholas F. Cothard, Eve M. Vavagiakis +31
The Simons Observatory is building both large (6 m) and small (0.5 m) aperture telescopes in the Atacama desert in Chile to observe the cosmic microwave background (CMB) radiation…
Commercially fabricated antenna-coupled Transition Edge Sensor bolometer detectors for next generation Cosmic Microwave Background polarimetry experiment
Aritoki Suzuki, Nicholas Cothard, Adrian T. Lee +10
We report on the development of commercially fabricated multi-chroic antenna coupled Transition Edge Sensor (TES) bolometer arrays for Cosmic Microwave Background (CMB) polarimetry…
Developing AlMn films for Argonne TES fabrication
E. M. Vavagiakis, N. F. Cothard, J. R. Stevens +5
The reference design for the next-generation cosmic microwave background (CMB) experiment, CMB-S4, relies on large arrays of transition edge sensor (TES) bolometers coupled to Supe…
The CCAT-Prime Submillimeter Observatory
Manuel Aravena, Jason Austermann, Kaustuv Basu +53
The Cerro Chajnantor Atacama Telescope-prime (CCAT-prime) is a new 6-m, off-axis, low-emissivity, large field-of-view submillimeter telescope scheduled for first light in the last…
Sensitivity of the Prime-Cam Instrument on the CCAT-prime Telescope
Steve K. Choi, Jason Austermann, Kaustuv Basu +19
CCAT-prime is a new 6 m crossed Dragone telescope designed to characterize the Cosmic Microwave Background (CMB) polarization and foregrounds, measure the Sunyaev-Zel'dovich effect…
The Simons Observatory: Astro2020 Decadal Project Whitepaper
The Simons Observatory Collaboration, Maximilian H. Abitbol, Shunsuke Adachi +280
The Simons Observatory (SO) is a ground-based cosmic microwave background (CMB) experiment sited on Cerro Toco in the Atacama Desert in Chile that promises to provide breakthrough…
Designs for next generation CMB survey strategies from Chile
Jason R. Stevens, Neil Goeckner-Wald, Reijo Keskitalo +20
New telescopes are being built to measure the Cosmic Microwave Background (CMB) with unprecedented sensitivity, including Simons Observatory (SO), CCAT-prime, the BICEP Array, SPT-…
The Simons Observatory: Instrument Overview
Nicholas Galitzki, Aamir Ali, Kam S. Arnold +75
The Simons Observatory (SO) will make precise temperature and polarization measurements of the cosmic microwave background (CMB) using a set of telescopes which will cover angular…
Advanced ACTPol TES Device Parameters and Noise Performance in Fielded Arrays
Kevin T. Crowley, Jason E. Austermann, Steve K. Choi +14
The Advanced ACTPol (AdvACT) upgrade to the Atacama Cosmology Telescope (ACT) features arrays of aluminum manganese transition-edge sensors (TESes) optimized for ground-based obser…
Prime-Cam: A first-light instrument for the CCAT-prime telescope
Eve M. Vavagiakis, Zeeshan Ahmed, Aamir Ali +43
CCAT-prime will be a 6-meter aperture telescope operating from sub-mm to mm wavelengths, located at 5600 meters elevation on Cerro Chajnantor in the Atacama Desert in Chile. Its no…
Characterization of the Mid-Frequency Arrays for Advanced ACTPol
Steve K. Choi, Jason Austermann, James A. Beall +17
The Advanced ACTPol upgrade on the Atacama Cosmology Telescope aims to improve the measurement of the cosmic microwave background anisotropies and polarization, using four new dich…
Advanced ACTPol Low Frequency Array: Readout and Characterization of Prototype 27 and 39 GHz Transition Edge Sensors
Brian J. Koopman, Nicholas F. Cothard, Steve K. Choi +13
Advanced ACTPol (AdvACT) is a third generation polarization upgrade to the Atacama Cosmology Telescope, designed to observe the cosmic microwave background (CMB). AdvACT expands on…
Magnetic Sensitivity of AlMn TESes and Shielding Considerations for Next-Generation CMB Surveys
E. M. Vavagiakis, S. W. Henderson, K. Zheng +17
In the next decade, new ground-based Cosmic Microwave Background (CMB) experiments such as Simons Observatory (SO), CCAT-prime, and CMB-S4 will increase the number of detectors obs…
Readout of two-kilopixel transition-edge sensor arrays for Advanced ACTPol
Shawn W. Henderson, Jason R. Stevens, Mandana Amiri +30
Advanced ACTPol is an instrument upgrade for the six-meter Atacama Cosmology Telescope (ACT) designed to measure the cosmic microwave background (CMB) temperature and polarization…
Survey strategy optimization for the Atacama Cosmology Telescope
F. De Bernardis, J. R. Stevens, M. Hasselfield +34
In recent years there have been significant improvements in the sensitivity and the angular resolution of the instruments dedicated to the observation of the Cosmic Microwave Backg…
Design and Deployment of a Multichroic Polarimeter Array on the Atacama Cosmology Telescope
R. Datta, J. Austermann, J. A. Beall +28
We present the design and the preliminary on sky performance with respect to beams and pass-bands of a multichroic polarimeter array covering the 90 and 146 GHz Cosmic Microwave Ba…
Advanced ACTPol Cryogenic Detector Arrays and Readout
S. W. Henderson, R. Allison, J. Austermann +54
Advanced ACTPol is a polarization-sensitive upgrade for the 6 m aperture Atacama Cosmology Telescope (ACT), adding new frequencies and increasing sensitivity over the previous ACTP…