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Profil bibliographique

J. C. Groh

Informations fournies par OpenAlex. Research Africa ne déduit ni nationalité, ni poste, ni coordonnées personnelles.

18Publications signalées
274Citations signalées
0Affiliations récentes

Les domaines associés

Superconducting and THz Device TechnologyPhysics of Superconductivity and MagnetismRadio Astronomy Observations and TechnologyCalibration and Measurement TechniquesDark Matter and Cosmic Phenomena

Les publications récentes

Accès ouvert 2025 preprint OpenAlex

Demonstration of a 1820 channel multiplexer for transition-edge sensor bolometers

J. C. Groh, Zeeshan Ahmed, Jason Austermann, James A. Beall et autres

The scalability of most transition-edge sensor arrays is limited by the multiplexing technology which combines their signals over a reduced number of wires and amplifiers. In this Letter, we present and demonstrate a multiplexer design optimized for transition-edge sensor bolometers with 1820 …

1 citation arXiv (Cornell University)
2024 conference-abstract OpenAlex

A 1,820 channel microwave SQUID multiplexer for TES bolometer readout

J. C. Groh, Zeeshan Ahmed, Jason E. Austermann, James A. Beall et autres

Increasingly large arrays TES bolometers continue to be planned for future mm-wave observatories, but their scalability is limited by the associated cryogenic multiplexing readout. Microwave SQUID multiplexing is a natural candidate for future systems, as it already boasts a ~10x channel handling …

us (code pays fourni par la source)

0 citations
Accès ouvert 2022 preprint OpenAlex

Phase Drift Monitoring for Tone Tracking Readout of Superconducting Microwave Resonators

Maximiliano Silva-Feaver, Zeeshan Ahmed, Kam Arnold, J. Frisch et autres

A number of modern millimeter, sub-millimeter, and far-infrared detectors are read out using superconducting microwave (1-10GHz) resonators. The main detector technologies are Transition Edge Sensors, read out using Microwave SQUID Multiplexers ($μ$mux) and Microwave Kinetic Inductance Detectors. In these readout schemes, sky …

0 citations arXiv (Cornell University)
2022 conference-paper OpenAlex

Phase drift monitoring for tone tracking readout of superconducting microwave resonators

Maximiliano Silva-Feaver, Zeeshan Ahmed, Kam Arnold, J. Frisch et autres

A number of modern millimeter, sub-millimeter, and far-infrared detectors are read out using superconducting microwave (1-10GHz) resonators. The main detector technologies are Transition Edge Sensors, read out using Microwave SQUID Multiplexers (µmux) and Microwave Kinetic Inductance Detectors. In these readout schemes, sky …

us (code pays fourni par la source)

6 citations Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy XI
Accès ouvert 2022 article OpenAlex

Performance and characterization of the SPT-3G digital frequency-domain multiplexed readout system using an improved noise and crosstalk model

J. Montgomery, Peter A. R. Ade, Zeeshan Ahmed, Ethan Anderes et autres

The third-generation South Pole Telescope camera (SPT-3G) improves upon its predecessor (SPTpol) by an order of magnitude increase in detectors on the focal plane. The technology used to read out and control these detectors, digital frequency-domain multiplexing (DfMUX), is conceptually the same …

us, ca, gb, au, fr, jp (code pays fourni par la source)

15 citations Journal of Astronomical Telescopes Instruments and Systems
2020 conference-paper OpenAlex

Performance and characterization of the SPT-3G digital frequency multiplexed readout system using an improved noise and crosstalk model

J. Montgomery, A. J. Anderson, J. S. Avva, A. N. Bender et autres

The third generation South Pole Telescope camera (SPT-3G) improves over its predecessor (SPTpol) by an order of magnitude increase in detector number. The technology used to read out and control these detectors, digital frequency-domain multiplexing (DfMUX), is conceptually the same as used …

ca, us (code pays fourni par la source)

9 citations
Accès ouvert 2019 preprint OpenAlex

Particle Physics with the Cosmic Microwave Background with SPT-3G

J. S. Avva, P. A. R. Ade, Zeeshan Ahmed, A. J. Anderson et autres

The cosmic microwave background (CMB) encodes information about the content and evolution of the universe. The presence of light, weakly interacting particles impacts the expansion history of the early universe, which alters the temperature and polarization anisotropies of the CMB. In this …

2 citations arXiv (Cornell University)

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