577 citations · 718 across the 11 of their papers we have counts for
15 papers
The Simons Observatory: Frequency-resolved beam calibration for the SO SATs with POLOCALC
Nadia Dachlythra, Gabriele Coppi, Ludovico Bizzarri +30
We present a far-field beam calibration of the Simons Observatory (SO) Small Aperture Telescopes (SATs) using scanned single-frequency measurements of a drone-mounted source emitti…
The Simons Observatory: Commissioning of the Mid-Frequency Small Aperture Telescopes
Kathleen Harrington, Remington Gerras, Nicholas Galitzki +88
The Simons Observatory (SO) is a cosmic microwave background (CMB) survey experiment observing from an altitude of 5,200 m in the Atacama Desert in Chile. The SO Small Aperture Tel…
Design, assembly, and initial test results of a cryostat for holographic characterization of microwave telescopes
Jon E. Gudmundsson, Miranda Eiben, Thomas J. L. J. Gascard +1
We describe the design, fabrication, assembly, and room-temperature vacuum qualification of a 1.4-m long cylindrical cryostat developed for holographic testing of cryogenic microwa…
Physical Optics Analysis of Polarization Effects in SO LAT Reflectors
Xiaodong Ren, Patricio A. Gallardo, Jon E. Gudmundsson
We present a physical-optics analysis of the polarization response of the reflective optical of the Simons Observatory Large Aperture Telescope (SO LAT). Far-field co-polar and cro…
Design of ALPHA Phase I: A Plasma Haloscope for 10--20 GHz Post-Inflation Axions
ALPHA Collaboration, Xiran Bai, Rustam Balafendiev +53
The axion is a well-motivated hypothetical particle capable of resolving both the strong CP problem and the dark matter mystery, with recent post-inflationary cosmological simulati…
picoMUX: microcontroller based time-domain multiplexing readout for kilopixel TES arrays
Simon Tartakovsky, Alexandre E. Adler, Jason E. Austermann +23
Advances in cryogenic SQUID-based time-domain multiplexing (TDM) have outpaced their warm readout electronics. Next generation CMB telescopes are baselining kilopixel TES arrays wi…
Sub-Kelvin Cryogenics for a Super-Pressure Balloon-Borne CMB Polarimeter: Taurus
Jared L. May, Alexandre E. Adler, Jason E. Austermann +23
Taurus is a balloon-borne cosmic microwave background (CMB) experiment designed to operate more than 10,000 transition-edge sensor bolometers at a base temperature near 100 mK duri…
Polarization rotation through differential transmission in refractive CMB telescopes identified using a hybrid physical optics method
Xiaodong Ren, Rustam Balafendiev, Jon E. Gudmundsson
We identify a polarization rotation systematic in the far field beams of refractive cosmic microwave background (CMB) telescopes caused by differential transmission in anti-reflect…
Vector beam mapping at millimeter wavelengths using a robot arm
Rustam Balafendiev, Thomas Gascard, Jon E. Gudmundsson
Many experimental efforts are striving to provide deep maps of the cosmic microwave background (CMB) to shed light on key questions in modern cosmology. The primary science goal fo…
Thermal and mechanical study of a parametrised cryostat model for optical characterisation of upcoming CMB experiments
Thomas J. L. J. Gascard, Yi Wang, Jon E. Gudmundsson +6
Current and future experiments observing the cosmic microwave background require a detailed understanding of optical performance at cryogenic temperatures. Pre-deployment analysis…
Modeling optical systematics for the Taurus CMB experiment
Alexandre E. Adler, Jason E. Austermann, Steven J. Benton +16
We simulate a variety of optical systematics for Taurus, a balloon-borne cosmic microwave background (CMB) polarisation experiment, to assess their impact on large-scale E-mode pol…
The Thermal Design, Characterization, and Performance of the SPIDER Long-Duration Balloon Cryostat
J. E. Gudmundsson, P. A. R. Ade, M. Amiri +40
We describe the SPIDER flight cryostat, which is designed to cool six millimeter-wavelength telescopes during an Antarctic long-duration balloon flight. The cryostat, one of the la…
Planck 2013 results. XV. CMB power spectra and likelihood
Planck collaboration, P. A. R. Ade, N. Aghanim +257
We present the Planck likelihood, a complete statistical description of the two-point correlation function of the CMB temperature fluctuations. We use this likelihood to derive the…
SPIDER: Probing the Early Universe with a Suborbital Polarimeter
A. A. Fraisse, P. A. R. Ade, M. Amiri +43
We evaluate the ability of SPIDER, a balloon-borne polarimeter, to detect a divergence-free polarization pattern ("B-modes") in the Cosmic Microwave Background (CMB). In the inflat…
Modeling and characterization of the SPIDER half-wave plate
Sean A. Bryan, Peter A. R. Ade, Mandana Amiri +42
Spider is a balloon-borne array of six telescopes that will observe the Cosmic Microwave Background. The 2624 antenna-coupled bolometers in the instrument will make a polarization…