Prof. Bradley R. Johnson Profile

Prof. Bradley R. Johnson

at Univ of Virginia

SPIE Involvement:

Author

Publications (8)

Proceedings Article | 31 August 2022 Poster + Paper

The Simons Observatory: development and validation of the large aperture telescope receiver

Tanay Bhandarkar, Sanah Bhimani, Gabriele Coppi, Simon Dicker, Saianeesh Haridas, Kathleen Harrington, Jeffrey Iuliano, Bradley Johnson, Anna Kofman, Jack Lashner, Jenna Moore, David Nguyen, John Orlowski-Scherer, Karen Sarmiento, Julia Robe, Maximiliano Silva-Feaver, Robert Thornton, Yuhan Wang, Zhilei Xu

Proceedings Volume 12190, 1219012 (2022) https://doi.org/10.1117/12.2629557

KEYWORDS: Sensors, Telescopes, Receivers, Cryogenics, Optical filters, Copper, Observatories, Temperature metrology, Physics, Resonators

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Proceedings Article | 31 August 2022 Poster + Paper

Simons Observatory focal-plane module: detector re-biasing with bias-step measurements

Yuhan Wang, Tanay Bhandarkar, Steve Choi, Kevin Crowley, Shannon Duff, Daniel Dutcher, John Groh, Kathleen Harrington, Erin Healy, Bradley Johnson, Jack Lashner, Yaqiong Li, Max Silva-Feaver, Rita Sonka, Suzanne Staggs, Samantha Walker, Kaiwen Zheng

Proceedings Volume 12190, 121901I (2022) https://doi.org/10.1117/12.2630135

KEYWORDS: Sensors, Semiconducting wafers, Bolometers, Telescopes, Superconductors, Resistors, Receivers, Copper, Tellurium, Physics

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Proceedings Article | 31 August 2022 Poster + Paper

The Simons Observatory: mechanical and electrical robustness of the universal focal-plane modules

Erin Healy, James Beall, Shannon Duff, Daniel Dutcher, Bradley Johnson, Rita Sonka, Suzanne Staggs, Yuhan Wang, Kaiwen Zheng

Proceedings Volume 12190, 1219013 (2022) https://doi.org/10.1117/12.2629583

KEYWORDS: Sensors, Multiplexers, Resistance, Semiconducting wafers, Silicon, Microwave radiation, Observatories, Multiplexing, Telescopes, Prototyping

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Proceedings Article | 29 August 2022 Poster

Laboratory measurements of horn-coupled and antenna-coupled microwave kinetic inductance detector (MKID) arrays

Jordan Shroyer, Jeremy Meinke, Bradley Johnson, Philip Mauskopf

Proceedings Volume PC12190, PC121901E (2022) https://doi.org/10.1117/12.2630355

KEYWORDS: Sensors, Microwave radiation, Inductance, Detector arrays, Polarization, Waveguides, Transducers, Bandpass filters, Antennas

Proceedings Article | 18 December 2020 Poster + Presentation + Paper

Simons Observatory Small Aperture Telescope overview

Kenji Kiuchi, Shunsuke Adachi, Aamir Ali, Kam Arnold, Peter Ashton, Jason Austermann, Andrew Bazako, James Beall, Yuji Chinone, Gabriele Coppi, Kevin Crowley, Simon Dicker, Bradley Dober, Shannon Duff, Giulio Fabbian, Nicholas Galitzki, Joseph Golec, Jon Gudmundsson, Kathleen Harrington, Masaya Hasegawa, Makoto Hattori, Charles Hill, Shuay-Pwu Patty Ho, Johannes Hubmayr, Bradley Johnson, Daisuke Kaneko, Nobuhiko Katayama, Brian Keating, Akito Kusaka, Jack Lashner, Adrian Lee, Frederick Matsuda, Heather McCarrick, Masaaki Murata, Federico Nati, Yume Nishinomiya, Lyman Page, Mayuri Sathyanarayana Rao, Christian Reichardt, Kana Sakaguri, Yuki Sakurai, Joseph Sibert, Jacob Spisak, Osamu Tajima, Grant Teply, Tomoki Terasaki, Tran Tsan, Samantha Walker, Edward Wollack, Zhilei Xu, Kyohei Yamada, Mario Zannoni, Ningfeng Zhu

Proceedings Volume 11445, 114457L (2020) https://doi.org/10.1117/12.2562016

KEYWORDS: Telescopes, Observatories, Polarization, Cryogenics, Atmospheric optics, Microwave radiation, Sensors, Bolometers, Singular optics, Optical systems

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Proceedings Article | 14 December 2020 Presentation + Paper

Assembly development for the Simons Observatory focal plane readout module

Erin Healy, Aamir Ali, Kam Arnold, Jason Austermann, James Beall, Sarah Marie Bruno, Steve Choi, Jake Connors, Nicholas Cothard, Bradley Dober, Shannon Duff, Nicholas Galitzki, Gene Hilton, Shuay-Pwu Patty Ho, Johannes Hubmayr, Bradley Johnson, Yaqiong Li, Michael Link, Tammy Lucas, Heather McCarrick, Michael Niemack, Maximiliano Silva-Feaver, Rita Sonka, Suzanne Staggs, Eve Vavagiakis, Michael Vissers, Yuhan Wang, Edward Wollack, Zhilei Xu, Benjamin Westbrook, Kaiwen Zheng

Proceedings Volume 11453, 1145317 (2020) https://doi.org/10.1117/12.2561743

KEYWORDS: Observatories, Microwave radiation, Telescopes, Sensors, Bolometers, Multiplexing, Electronics, Receivers, Antennas, Transducers

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Proceedings Article | 13 December 2020 Presentation

A four kilopixel 150 GHz KID imager paired with a 1.5 m crossed Dragone telescope

Jack Sayers, Peter Day, Daniel Cunnane, Byeong Ho Eom, Henry LeDuc, Roger O'Brient, Marcus Runyan, Sean Bryan, Samuel Gordon, Philip Mauskopf, Bradley Johnson, Heather McCarrick, Tanay Bhandarkar

Proceedings Volume 11453, 114531C (2020) https://doi.org/10.1117/12.2561647

KEYWORDS: Telescopes, Imaging systems, Aluminum, Sensors, Waveguides, Cameras, Inductance, Crystals, Silicon, Polarization

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Proceedings Article | 18 May 2020 Presentation + Paper

A millimeter-wave kinetic inductance detector camera for long-range imaging through optical obscurants

Jack Sayers, Peter Day, Daniel Cunnane, Byeong Ho Eom, Henry LeDuc, Roger O'Brient, Marcus Runyan, Sean Bryan, Samuel Gordon, Philip Mauskopf, Bradley Johnson, Heather McCarrick, Tanay Bhandarkar

Proceedings Volume 11411, 114110H (2020) https://doi.org/10.1117/12.2557428

KEYWORDS: Sensors, Signal attenuation, Quasiparticles, Imaging systems, Superconductors, Photons, Inductance, Resonators, Absorption

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Showing 5 of 8 publications

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