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13 papers · 1 filter
Characterization of aliased noise in the Advanced ACTPol receiver
Patricio A. Gallardo, Michael D. Niemack, Jason E. Austermann +14
Advanced ACTPol is the second generation polarization-sensitive upgrade to the aperture Atacama Cosmology Telescope (ACT), which increased detector count and frequency…
A robust principal component analysis for outlier identification in messy microcalorimeter data
J. W. Fowler, B. K. Alpert, Y. -I. Joe +3
A principal component analysis (PCA) of clean microcalorimeter pulse records can be a first step beyond statistically optimal linear filtering of pulses towards a fully non-linear…
Tuning Excited State Electron Transfer in Fe Tetracyano-Polypyridyl Complexes
Kristjan Kunnus, Lin Li, Charles J. Titus +15
We have investigated photoinduced intramolecular electron transfer dynamics following metal-to-ligand charge-transfer (MLCT) excitation of [Fe(CN)(2,2'-bipyridine)] (1),…
Working principle and demonstrator of microwave-multiplexing for the HOLMES experiment microcalorimeters
D. T. Becker, D. A. Bennett, M. Biasotti +21
The determination of the neutrino mass is an open issue in modern particle physics and astrophysics. The direct mass measurement is the only theory-unrelated experimental tool capa…
Demonstration of 220/280 GHz Multichroic Feedhorn-Coupled TES Polarimeter
Samantha Walker, Carlos E. Sierra, Jason E. Austermann +11
We describe the design and measurement of feedhorn-coupled, transition-edge sensor (TES) polarimeters with two passbands centered at 220 GHz and 280 GHz, intended for observations…
Microwave multiplexing on the Keck Array
Ari Cukierman, Zeeshan Ahmed, Shawn Henderson +82
We describe an on-sky demonstration of a microwave-multiplexing readout system in one of the receivers of the Keck Array, a polarimetry experiment observing the cosmic microwave ba…
First Operation of TES Microcalorimeters in Space with the Micro-X Sounding Rocket
J. S. Adams, R. Baker, S. R. Bandler +20
Micro-X is a sounding rocket-borne instrument that uses a microcalorimeter array to perform high-resolution X-ray spectroscopy. This instrument flew for the first time on July 22nd…
A Model for Excess Johnson Noise in Superconducting Transition-edge Sensors
Abigail Wessels, Kelsey Morgan, Daniel T. Becker +9
Transition-Edge Sensors (TESs) are two-dimensional superconducting films used to detect energy or power. TESs are voltage biased in the resistive transition where the film resistan…
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…
Resonant soft x-ray scattering from stripe-ordered LaBaCuO detected by a transition edge sensor array detector
Y. I. Joe, Y. Fang, S. Lee +11
Resonant soft x-ray scattering (RSXS) is a leading probe of valence band order in materials best known for detecting charge density wave order in the copper-oxide superconductors.…
Mitigating the effects of charged particle strikes on TES arrays for exotic atom X-ray experiments
H. Tatsuno, D. A. Bennett, W. B. Doriese +16
Exotic atom experiments place transition-edge-sensor (TES) microcalorimeter arrays in a high-energy charged particle rich environment. When a high-energy charged particle passes th…
Exploring the physics of neutron stars with high-resolution, high-throughput X-ray spectroscopy
Jeremy Heyl, Ilaria Caiazzo, Samar Safi-Harb +21
The advent of moderately high-resolution X-ray spectroscopy with Chandra and XMM promised to usher in a new age in the study of neutron stars: we thought we would study neutron sta…
Testing general relativity with accretion onto compact objects
Ilaria Caiazzo, Jeremy Heyl, Adam R. Ingram +21
The X-ray emission of neutron stars and black holes presents a rich phenomenology that can lead us to a better understanding of their nature and to address more general physics que…