Dr. Stephen Padin Profile

Dr. Stephen Padin

Scientist at Caltech

SPIE Involvement:

Author

Publications (36)

Proceedings Article | 23 August 2024 Presentation + Paper

SPHEREx instrument optical integration and testing campaign overview

Phillip Korngut, James Bock, Samuel Condon, Charles Dowell, Howard Hui, Woong-Seob Jeong, Youngsoo Jo, Ken Manatt, Chi Nguyen, Hien Nguyen, Stephen Padin, Sung-Joon Park, Jeonghyun Pyo, Yujin Yang

Proceedings Volume 13092, 130920T (2024) https://doi.org/10.1117/12.3020511

KEYWORDS: Equipment, Telescopes, Vacuum chambers, Calibration, Staring arrays, Optical testing, Optical fabrication, Mirrors, Integrated optics

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Proceedings Article | 23 August 2024 Poster + Paper

Spectral response of the SPHEREx telescope

Howard Hui, Phillip Korngut, Samuel Condon, Chi Nguyen, Stephen Padin, Jamie Bock, Charles Dowell, Woong-Seob Jeong, Youngsoo Jo, Kenneth Manatt, Hien Nguyen, Sung-Joon Park, Jeonghyun Pyo, Yujin Yang

Proceedings Volume 13092, 130923N (2024) https://doi.org/10.1117/12.3018463

KEYWORDS: Sensors, Spectral response, Telescopes, Monochromators, Spectral resolution, Spectral calibration, Integrating spheres, Cryogenics

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Proceedings Article | 23 August 2024 Poster + Paper

How to tame your dragon’s breath: edge design to minimize scattered light from sources outside of SPHEREx field of view

Chi Nguyen, James Bock, Samuel Condon, C. Darren Dowell, Howard Hui, Phillip Korngut, Kenneth Manatt, Hien Nguyen, Stephen Padin

Proceedings Volume 13092, 130923M (2024) https://doi.org/10.1117/12.3018018

KEYWORDS: Sensors, Point spread functions, Light scattering, Design, Scattering, Telescopes, Detector arrays, Infrared Space Observatory, Infrared imaging, Infrared detectors

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Proceedings Article | 31 August 2022 Presentation + Paper

Optical design concept of the CMB-S4 large-aperture telescopes and cameras

Patricio Gallardo, Bradford Benson, John Carlstrom, Simon Dicker, Nick Emerson, Jon Gudmundsson, Richard Hills, Michele Limon, Jeff McMahon, Michael Niemack, Johanna Nagy, Stephen Padin, John Ruhl, Sara Simon

Proceedings Volume 12190, 121900C (2022) https://doi.org/10.1117/12.2626876

KEYWORDS: Cameras, Telescopes, Optical design, Optical instrument design, Sensors, Monochromatic aberrations, Physics, Imaging systems, Observatories, Mirrors

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Proceedings Article | 29 August 2022 Presentation

Spectral calibration of SPHEREx focal plane

Howard Hui, James Bock, Sam Condon, Charles Dowell, Matt Hollister, Phil Korngut, Ken Manatt, Chi Nguyen, Hien Nguyen, Steve Padin, Marco Viero

Proceedings Volume 12180, 121801J (2022) https://doi.org/10.1117/12.2628636

KEYWORDS: Spectral calibration, Sensors, Staring arrays, Spectroscopy, Spectral resolution, Ranging, Optical filters, Near infrared, Linear filtering, Integrating spheres

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Proceedings Article | 27 August 2022 Poster + Paper

SPHERExLabTools (SLT): a Python data acquisition system for SPHEREx characterization and calibration

Sam Condon, Marco Viero, James Bock, Howard Hui, Phil Korngut, Hiromasa Miyasaka, Ken Manatt, Chi Nguyen, Hien Nguyen, Steve Padin

Proceedings Volume 12180, 121804S (2022) https://doi.org/10.1117/12.2630662

KEYWORDS: Calibration, Associative arrays, Data acquisition, Microscopes, Collimators, Spectral calibration, Sensors, Collimation, Monochromators

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SPIE Journal Paper | 8 January 2022

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

Joshua Montgomery, Peter A. Ade, Zeeshan Ahmed, Ethan Anderes, Adam Anderson, Melanie Archipley, Jessica Avva, Kevin Aylor, Lennart Balkenhol, Peter Barry, Ritoban Thakur, Karim Benabed, Amy Bender, Bradford Benson, Federico Bianchini, Lindsey Bleem, Francois Bouchet, Lincoln Bryant, Karen Byrum, John Carlstrom, Faustin Carter, Thomas Cecil, Clarence Chang, Prakrut Chaubal, Geoffrey Chen, Hsiao-Mei Cho, Ti-Lin Chou, Jean-Francois Cliche, Tom Crawford, Ari Cukierman, Cali Daley, Tijmen de Haan, Edward Denison, Karia Dibert, Junjia Ding, Matthew Adam Dobbs, Daniel Dutcher, Tucker Elleflot, Wendeline Everett, Cahng Feng, Kyle R. Ferguson, Allen Foster, Jianyang Fu, Silvia Galli, Anne Gambrel, Robert Gardner, Neil Goeckner-Wald, John Groh, Riccardo Gualtieri, Sam Guns, Nikhel Gupta, Robert Guyser, Nils Halverson, Angelina Harke-Hosemann, Nicholas Harrington, Jason Henning, Gene Hilton, Eric Hivon, William Holzapfel, John Hood, Doug Howe, Nicholas Huang, Kent Irwin, Oliver Jeong, Michelle Jonas, Adam Jones, Trupti Khaire, Lloyd Knox, Anna Kofman, Milo Korman, Donna Kubik, Stephen Kuhlmann, Chao-Lin Kuo, Adrian Lee, Erik Leitch, Amy Lowitz, Chunyu Lu, Stephan Meyer, Daniel Michalik, Marius Millea, Andrew Nadolski, Tyler Natoli, Hogan Nguyen, Gavin Noble, Valentine Novosad, Yuuki Omori, Steve Padin, Zhaodi Pan, Pascal Paschos, John Pearson, Chrystian Posada, Karthik Prabhu, Wei Quan, Alexandra Rahlin, Christian Reichardt, David Riebel, Benedikt Riedel, Maclean Rouble, John Ruhl, James Sayre, Eduardo Schiappucci, Erik Shirokoff, Graeme Smecher, Joshua Sobrin, Antony Stark, Judith Stephen, Kyle Story, Aritoki Suzuki, Keith Thompson, Ben Thorne, Carole Tucker, Caterina Umilta, Leila Vale, Keith Vanderlinde, Joaquin Vieira, Gensheng Wang, Nathan Whitehorn, Wai Ling Wu, Volodymyr Yefremenko, Ki Won Yoon, Matthew Young

JATIS, Vol. 8, Issue 01, 014001, (January 2022) https://doi.org/10.1117/12.10.1117/1.JATIS.8.1.014001

KEYWORDS: Sensors, Multiplexing, Cryogenics, Interference (communication), Resistance, Physics, Systems modeling, Receivers, Performance modeling, Nulling interferometry

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Proceedings Article | 13 December 2020 Presentation + Paper

SPHEREx: NASA's near-infrared spectrophotometric all-sky survey

Brendan Crill, Michael Werner, Rachel Akeson, Matthew Ashby, Lindsey Bleem, James Bock, Sean Bryan, Jill Burnham, Joyce Byunh, Tzu-Ching Chang, Yi-Kuan Chiang, Walter Cook, Asantha Cooray, Andrew Davis, OIivier Doré, C. Darren Dowell, Gregory Dubois-Felsmann, Tim Eifler, Andreas Faisst, Salman Habib, Chen Heinrich, Katrin Heitmann, Grigory Heaton, Christopher Hirata, Viktor Hristov, Howard Hui, Woong-Seob Jeong, Jae Hwan Kang, Branislav Kecman, J. Davy Kirkpatrick, Phillip Korngut, Elisabeth Krause, Bomee Lee, Carey Lisse, Daniel Masters, Philip Mauskopf, Gary Melnick, Hiromasa Miyasaka, Hooshang Nayyeri, Hien Nguyen, Karin Öberg, Steve Padin, Roberta Paladini, Milad Pourrahmani, Jeonghyun Pyo, Roger Smith, Yong-Seong Song, Teresa Symons, Harry Teplitz, Volker Tolls, Steve Unwin, Rogier Windhorst, Yujin Yang, Michael Zemcov

Proceedings Volume 11443, 114430I (2020) https://doi.org/10.1117/12.2567224

KEYWORDS: Galactic astronomy, Telescopes, Astrophysics, Spectral resolution, Absorption, Stars, Spectroscopes, Detector arrays, Beam splitters, Optical filters

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Proceedings Article | 24 August 2018 Presentation + Paper

Design and characterization of the SPT-3G receiver

J. Sobrin, P. A. Ade, Z. Ahmed, A. Anderson, J. Avva, R. Basu Thakur, A. Bender, B. Benson, J. Carlstrom, F. Carter, T. Cecil, C. Chang, J. F. Cliche, A. Cukierman, T. de Haan, J. Ding, M. A. Dobbs, D. Dutcher, W. Everett, A. Foster, J. Gallichio, A. Gilbert, J. Groh, S. Guns, N. Halverson, A. Harke-Hosemann, N. Harrington, J. Henning, W. Holzapfel, N. Huang, K. Irwin, O. Jeong, M. Jonas, T. Khaire, A. Kofman, M. Korman, D. Kubik, S. Kuhlmann, C. L. Kuo, A. Lee, A. Lowitz, S. Meyer, D. Michalik, J. Montgomery, A. Nadolski, T. Natoli, H. Nguyen, G. Noble, V. Novosad, S. Padin, Z. Pan, J. Pearson, C. Posada, W. Quan, A. Rahlin, J. Ruhl, J. Sayre, E. Shirokoff, G. Smecher, A. Stark, K. Story, A. Suzuki, K. Thompson, C. Tucker, K. Vanderlinde, J. Vieira, G. Wang, N. Whitehorn, V. Yefremenko, K. W. Yoon, M. Young

Proceedings Volume 10708, 107081H (2018) https://doi.org/10.1117/12.2314366

KEYWORDS: Sensors, Receivers, Cryogenics, Physics, Thermography, Telescopes, Detector arrays, Lenses, Copper, Astronomy

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Proceedings Article | 1 August 2018 Paper

Year two instrument status of the SPT-3G cosmic microwave background receiver

A. Bender, P. A. Ade, Z. Ahmed, A. Anderson, J. Avva, K. Aylor, P. Barry, R. Basu Thakur, B. Benson, L. Bleem, S. Bocquet, K. Byrum, J. Carlstrom, F. Carter, T. Cecil, C. Chang, H.-M. Cho, J. F. Cliche, T. Crawford, A. Cukierman, T. de Haan, E. Denison, J. Ding, M. A. Dobbs, S. Dodelson, D. Dutcher, W. Everett, A. Foster, J. Gallicchio, A. Gilbert, J. Groh, S. Guns, N. Halverson, A. Harke-Hosemann, N. Harrington, J. Henning, G. Hilton, G. Holder, W. Holzapfel, N. Huang, K. Irwin, O. Jeong, M. Jonas, A. Jones, T. Khaire, L. Knox, A. Kofman, M. Korman, D. Kubik, S. Kuhlmann, C.-L. Kuo, A. Lee, E. Leitch, A. Lowitz, S. Meyer, D. Michalik, J. Montgomery, A. Nadolski, T. Natoli, H. Ngyuen, G. Noble, V. Novosad, S. Padin, Z. Pan, J. Pearson, C. Posada, W. Quan, S. Raghunathan, A. Rahlin, C. Reichardt, J. Ruhl, J. Sayre, E. Shirokoff, G. Smecher, J. Sobrin, A. Stark, K. Story, A. Suzuki, K. Thompson, C. Tucker, L. Vale, K. Vanderlinde, J. Vieira, G. Wang, N. Whitehorn, W. L. Wu, V. Yefremenko, K. W. Yoon, M. Young

Proceedings Volume 10708, 1070803 (2018) https://doi.org/10.1117/12.2312426

KEYWORDS: Sensors, Receivers, Physics, Polarization, Microwave radiation, Bolometers, Telescopes, Astronomy, Electronics, Semiconducting wafers

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Proceedings Article | 31 July 2018 Paper

Characterization and performance of the second-year SPT-3G focal plane

D. Dutcher, P. A. Ade, Z. Ahmed, A. Anderson, J. Avva, R. Basu Thakur, A. Bender, B. Benson, J. Carlstrom, F. Carter, T. Cecil, C. Chang, J. Cliche, A. Cukierman, T. de Haan, J. Ding, M. Dobbs, W. Everett, A. Foster, J. Gallicchio, A. Gilbert, J. Groh, A. Harke-Hosemann, S. Guns, N. Halverson, N. Harrington, J. Henning, W. Holzapfel, N. Huang, K. Irwin, O. Jeong, M. Jonas, T. Khaire, A. Kofman, M. Korman, D. Kubik, S. Kuhlmann, C.-L. Kuo, A. Lowitz, A. Lee, S. Meyer, D. Michalik, J. Montgomery, A. Nadolski, T. Natoli, H. Nguyen, G. Noble, V. Novosad, S. Padin, Z. Pan, J. Pearson, C. Posada, W. Quan, A. Rahlin, J. Ruhl, J. Sayre, E. Shirokoff, G. Smecher, J. Sobrin, A. Stark, K. Story, A. Suzuki, K. Thompson, C. Tucker, K. Vanderlinde, J. Vieira, G. Wang, N. Whitehorn, V. Yefremenko, K. W. Yoon, M. Young

Proceedings Volume 10708, 107081Z (2018) https://doi.org/10.1117/12.2312451

KEYWORDS: Sensors, Bolometers, Semiconducting wafers, Telescopes, Resistance, Physics, Wafer-level optics, Polarization, Astronomy, Superconductors

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Proceedings Article | 9 July 2018 Paper

Broadband anti-reflective coatings for cosmic microwave background experiments

A. Nadolski, A. Kofman, J. Vieira, P. A. Ade, Z. Ahmed, A. Anderson, J. Avva, R. Basu Thakur, A. Bender, B. Benson, J. Carlstrom, F. Carter, T. Cecil, C. Chang, J. F. Cliche, A. Cukierman, T. de Haan, J. Ding, M. A. Dobbs, D. Dutcher, W. Everett, A. Foster, J. Fu, J. Gallichio, A. Gilbert, J. Groh, S. Guns, R. Guyser, N. Halverson, A. Harke-Hosemann, N. Harrington, J. Henning, W. Holzapfel, N. Huang, K. Irwin, O. Jeong, M. Jonas, A. Jones, T. Khaire, M. Korman, D. Kubik, S. Kuhlmann, C.-L. Kuo, A. Lee, A. Lowitz, S. Meyer, D. Michalik, J. Montgomery, T. Natoli, H. Nguyen, G. Noble, V. Novosad, S. Padin, Z. Pan, J. Pearson, C. Posada, W. Quan, A. Rahlin, J. Ruhl, J. Sayre, E. Shirokoff, G. Smecher, J. Sobrin, A. Stark, K. Story, A. Suzuki, K. Thompson, C. Tucker, K. Vanderlinde, G. Wang, N. Whitehorn, V. Yefremenko, K. W. Yoon, M. Young

Proceedings Volume 10708, 1070843 (2018) https://doi.org/10.1117/12.2315674

KEYWORDS: Coating, Antireflective coatings, Refractive index, Sensors, Physics, Lenses, Optical components

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Proceedings Article | 27 July 2016 Paper

SuperSpec: development towards a full-scale filter bank

J. Wheeler, S. Hailey-Dunsheath, E. Shirokoff, P. Barry, C. Bradford, S. Chapman, G. Che, J. Glenn, M. Hollister, A. Kovács, H. LeDuc, P. Mauskopf, R. McGeehan, C. McKenney, R. O’Brient, S. Padin, T. Reck, C. Ross, C. Shiu, C. Tucker, R. Williamson, J. Zmuidzinas

Proceedings Volume 9914, 99143K (2016) https://doi.org/10.1117/12.2233798

KEYWORDS: Sensors, Spectroscopy, Spectroscopes, Galactic astronomy, Optical filters, Prototyping, Sensors, Spectroscopy, Optical filters, Technetium, Resonators, Tomography, Ultraviolet radiation

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Proceedings Article | 20 July 2016 Paper

Integrated performance of a frequency domain multiplexing readout in the SPT-3G receiver

A. Bender, P. A. Ade, A. Anderson, J. Avva, Z. Ahmed, K. Arnold, J. Austermann, R. Basu Thakur, B. Benson, L. Bleem, K. Byrum, J. Carlstrom, F. Carter, C. Chang, H. M. Cho, J. F. Cliche, T. Crawford, A. Cukierman, D. Czaplewski, J. Ding, R. Divan, T. de Haan, M. A. Dobbs, D. Dutcher, W. Everett, A. Gilbert, J. Groh, R. Guyser, N. Halverson, A. Harke-Hosemann, N. Harrington, K. Hattori, J. Henning, G. Hilton, W. Holzapfel, N. Huang, K. Irwin, O. Jeong, T. Khaire, M. Korman, D. Kubik, C. L. Kuo, A. Lee, E. Leitch, S. Lendinez, S. Meyer, C. Miller, J. Montgomery, A. Nadolski, T. Natoli, H. Nguyen, V. Novosad, S. Padin, Z. Pan, J. Pearson, C. Posada, A. Rahlin, C. Reichardt, J. Ruhl, B. Saliwanchik, J. Sayre, J. Shariff, Ian Shirley, E. Shirokoff, G. Smecher, J. Sobrin, L. Stan, A. Stark, K. Story, A. Suzuki, Q. Y. Tang, K. Thompson, C. Tucker, K. Vanderlinde, J. Vieira, G. Wang, N. Whitehorn, V. Yefremenko, K. W. Yoon

Proceedings Volume 9914, 99141D (2016) https://doi.org/10.1117/12.2232146

KEYWORDS: Receivers, Bolometers, Multiplexing, Sensors, Electronics, Cryogenics, Resistance, Superconductors, Physics, Filtering (signal processing)

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Proceedings Article | 19 July 2016 Paper

Large arrays of dual-polarized multichroic TES detectors for CMB measurements with the SPT-3G receiver

Chrystian Posada, Peter A. Ade, Adam Anderson, Jessica Avva, Zeeshan Ahmed, Kam Arnold, Jason Austermann, Amy Bender, Bradford Benson, Lindsey Bleem, Karen Byrum, John Carlstrom, Faustin Carter, Clarence Chang, Hsiao-Mei Cho, Ari Cukierman, David Czaplewski, Junjia Ding, Ralu Divan, Tijmen de Haan, Matt Dobbs, Daniel Dutcher, Wenderline Everett, Renae Gannon, Robert Guyser, Nils Halverson, Nicholas Harrington, Kaori Hattori, Jason Henning, Gene Hilton, William Holzapfel, Nicholas Huang, Kent Irwin, Oliver Jeong, Trupti Khaire, Milo Korman, Donna Kubik, Chao-Lin Kuo, Adrian Lee, Erik Leitch, Sergi Lendinez Escudero, Stephan Meyer, Christina Miller, Joshua Montgomery, Andrew Nadolski, Tyler Natoli, Hogan Nguyen, Valentyn Novosad, Stephen Padin, Zhaodi Pan, John Pearson, Alexandra Rahlin, Christian Reichardt, John Ruhl, Benjamin Saliwanchik, Ian Shirley, James Sayre, Jamil Shariff, Erik Shirokoff, Liliana Stan, Antony Stark, Joshua Sobrin, Kyle Story, Aritoki Suzuki, Qing Yang Tang, Ritoban Thakur, Keith Thompson, Carole Tucker, Keith Vanderlinde, Joaquin Vieira, Gensheng Wang, Nathan Whitehorn, Volodymyr Yefremenko, Ki Won Yoon

Proceedings Volume 9914, 991417 (2016) https://doi.org/10.1117/12.2232912

KEYWORDS: Sensors, Receivers, Bolometers, Physics, Niobium, Technetium, Semiconducting wafers, Silicon, Antennas, Detector arrays

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Detectors for cosmic microwave background (CMB) experiments are now essentially background limited, so a straightforward alternative to improve sensitivity is to increase the number of detectors. Large arrays of multichroic pixels constitute an economical approach to increasing the number of detectors within a given focal plane area. Here, we present the fabrication of large arrays of dual-polarized multichroic transition-edge-sensor (TES) bolometers for the South Pole Telescope third-generation CMB receiver (SPT-3G). The complete SPT-3G receiver will have 2690 pixels, each with six detectors, allowing for individual measurement of three spectral bands (centered at 95 GHz, 150 GHz and 220 GHz) in two orthogonal polarizations. In total, the SPT-3G focal plane will have 16140 detectors. Each pixel is comprised of a broad-band sinuous antenna coupled to a niobium microstrip transmission line. In-line filters are used to define the different band-passes before the millimeter-wavelength signal is fed to the respective Ti/Au TES sensors. Detectors are read out using a 64x frequency domain multiplexing (fMux) scheme. The microfabrication of the SPT-3G detector arrays involves a total of 18 processes, including 13 lithography steps. Together with the fabrication process, the effect of processing on the Ti/Au TES’s Tc is discussed. In addition, detectors fabricated with Ti/Au TES films with Tc between 400 mK 560 mK are presented and their thermal characteristics are evaluated. Optical characterization of the arrays is presented as well, indicating that the response of the detectors is in good agreement with the design values for all three spectral bands (95 GHz, 150 GHz, and 220 GHz). The measured optical efficiency of the detectors is between 0.3 and 0.8. Results discussed here are extracted from a batch of research of development wafers used to develop the baseline process for the fabrication of the arrays of detectors to be deployed with the SPT-3G receiver. Results from these research and development wafers have been incorporated into the fabrication process to get the baseline fabrication process presented here. SPT-3G is scheduled to deploy to the South Pole Telescope in late 2016.

Proceedings Article | 19 August 2014 Paper

Status of SuperSpec: a broadband, on-chip millimeter-wave spectrometer

S. Hailey-Dunsheath, E. Shirokoff, P. Barry, C. Bradford, G. Chattopadhyay, P. Day, S. Doyle, M. Hollister, A. Kovacs, H. LeDuc, P. Mauskopf, C. McKenney, R. Monroe, R. O'Brient, S. Padin, T. Reck, L. Swenson, C. Tucker, J. Zmuidzinas

Proceedings Volume 9153, 91530M (2014) https://doi.org/10.1117/12.2057229

KEYWORDS: Spectroscopy, Resonators, Tin, Optical filters, Radiation effects, Sensors, Signal attenuation, Prototyping, Photons, Quasiparticles

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Proceedings Article | 23 July 2014 Paper

Preliminary design of the wavefront front sensor for CCAT

David Naylor, Brad Gom, Mélanie Leclerc, Mathieu Legros, Stephen Padin, Eugene Serabyn

Proceedings Volume 9153, 915326 (2014) https://doi.org/10.1117/12.2055372

KEYWORDS: Sensors, Mirrors, Telescopes, Wavefronts, Space telescopes, Shearing interferometers, Cryogenics, Off axis mirrors, Mars, Wavefront sensors

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Proceedings Article | 23 July 2014 Paper

SPT-3G: a next-generation cosmic microwave background polarization experiment on the South Pole telescope

B. Benson, P. A. Ade, Z. Ahmed, S. Allen, K. Arnold, J. Austermann, A. Bender, L. Bleem, J. Carlstrom, C. Chang, H. Cho, J. Cliche, T. Crawford, A. Cukierman, T. de Haan, M. Dobbs, D. Dutcher, W. Everett, A. Gilbert, N. Halverson, D. Hanson, N. Harrington, K. Hattori, J. Henning, G. Hilton, G. Holder, W. Holzapfel, K. Irwin, R. Keisler, L. Knox, D. Kubik, C. Kuo, A. Lee, E. Leitch, D. Li, M. McDonald, S. Meyer, J. Montgomery, M. Myers, T. Natoli, H. Nguyen, V. Novosad, S. Padin, Z. Pan, J. Pearson, C. Reichardt, J. Ruhl, B. Saliwanchik, G. Simard, G. Smecher, J. Sayre, E. Shirokoff, A. Stark, K. Story, A. Suzuki, K. Thompson, C. Tucker, K. Vanderlinde, J. Vieira, A. Vikhlinin, G. Wang, V. Yefremenko, K. Yoon

Proceedings Volume 9153, 91531P (2014) https://doi.org/10.1117/12.2057305

KEYWORDS: Polarization, Sensors, Telescopes, Physics, Receivers, Galaxy groups and clusters, Antennas, Signal detection, Signal to noise ratio, Bolometers

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Proceedings Article | 22 July 2014 Paper

CCAT mount control using de-convolution for fast scans

Peter Thompson, Stephen Padin

Proceedings Volume 9145, 91451P (2014) https://doi.org/10.1117/12.2057250

KEYWORDS: Electroluminescence, Computer programming, Sensors, Control systems design, Finite element methods, Control systems, Telescopes, Turbulence, Phase modulation, Radium

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Proceedings Article | 5 October 2012 Paper

Feedhorn-coupled TES polarimeter camera modules at 150 GHz for CMB polarization measurements with SPTpol

J. Henning, P. Ade, K. Aird, J. Austermann, J. Beall, D. Becker, B. Benson, L. Bleem, J. Britton, J. Carlstrom, C. Chang, H.-M. Cho, T. Crawford, A. Crites, A. Datesman, T. de Haan, M Dobbs, W. Everett, A. Ewall-Wice, E. George, N. Halverson, N. Harrington, G. Hilton, W. Holzapfel, J. Hubmayr, K. Irwin, M. Karfunkle, R. Keisler, J. Kennedy, A. Lee, E. Leitch, D. Li, M. Lueker, D. Marrone, J. McMahon, J. Mehl, S. Meyer, J. Montgomery, T. Montroy, J. Nagy, T. Natoli, J. Nibarger, M. Niemack, V. Novosad, S. Padin, C. Pryke, C. Reichardt, J. Ruhl, B. Saliwanchik, J. Sayre, K. Schaffer, E. Shirokoff, K. Story, C. Tucker, K. Vanderlinde, J. Vieira, G. Wang, R. Williamson, V. Yefremenko, K. Yoon, E. Young

Proceedings Volume 8452, 84523A (2012) https://doi.org/10.1117/12.927172

KEYWORDS: Sensors, Silicon, Semiconducting wafers, Detector arrays, Cameras, Polarization, Copper, Polarimetry, Waveguides, Superconductors

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Proceedings Article | 5 October 2012 Paper

Design and characterization of 90 GHz feedhorn-coupled TES polarimeter pixels in the SPTpol camera

J. Sayre, P. Ade, K. Aird, J. Austermann, J. Beall, D. Becker, B. Benson, L. Bleem, J. Britton, J. Carlstrom, C. Chang, H.-M. Cho, T. Crawford, A. Crites, A. Datesman, T. de Haan, M. Dobbs, W. Everett, A. Ewall-Wice, E. George, N. Halverson, N. Harrington, J. Henning, G. Hilton, W. Holzapfel, J. Hubmayr, K. Irwin, M. Karfunkle, R. Keisler, J. Kennedy, A. Lee, E. Leitch, D. Li, M. Lueker, D. Marrone, J. McMahon, J. Mehl, S. Meyer, J. Montgomery, T. Montroy, J. Nagy, T. Natoli, J. Nibarger, M. Niemack, V. Novosad, S. Padin, C. Pryke, C. Reichardt, J. Ruhl, B. Saliwanchik, K. Schaffer, E. Shirokoff, K. Story, C. Tucker, K. Vanderlinde, J. Vieira, G. Wang, R. Williamson, V. Yefremenko, K. Yoon, E. Young

Proceedings Volume 8452, 845239 (2012) https://doi.org/10.1117/12.927035

KEYWORDS: Sensors, Polarization, Waveguides, Signal detection, Niobium, Cameras, Telescopes, Thermography, Modulation, Polarimetry

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Proceedings Article | 27 September 2012 Paper

SPTpol: an instrument for CMB polarization measurements with the South Pole Telescope

J. Austermann, K. Aird, J. Beall, D. Becker, A. Bender, B. Benson, L. Bleem, J. Britton, J. Carlstrom, C. Chang, H. Chiang, H.-M. Cho, T. Crawford, A. Crites, A. Datesman, T. de Haan, M. Dobbs, E. George, N. Halverson, N. Harrington, J. Henning, G. Hilton, G. Holder, W. Holzapfel, S. Hoover, N. Huang, J. Hubmayr, K. Irwin, R. Keisler, J. Kennedy, L. Knox, A. Lee, E. Leitch, D. Li, M. Lueker, D. Marrone, J. McMahon, J. Mehl, S. Meyer, T. Montroy, T. Natoli, J. Nibarger, M. Niemack, V. Novosad, S. Padin, C. Pryke, C. Reichardt, J. Ruhl, B. Saliwanchik, J. Sayre, K. Schaffer, E. Shirokoff, A. Stark, K. Story, K. Vanderlinde, J. Vieira, G. Wang, R. Williamson, V. Yefremenko, K. Yoon, O. Zahn

Proceedings Volume 8452, 84521E (2012) https://doi.org/10.1117/12.927286

KEYWORDS: Polarization, Sensors, Telescopes, Electroluminescent displays, Calibration, Anisotropy, Bolometers, Polarimetry, Cameras, Galactic astronomy

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Proceedings Article | 27 September 2012 Paper

MKID development for SuperSpec: an on-chip, mm-wave, filter-bank spectrometer

E. Shirokoff, P. Barry, C. Bradford, G. Chattopadhyay, P. Day, S. Doyle, S. Hailey-Dunsheath, M. Hollister, A. Kovács, C. McKenney, H. Leduc, N. Llombart, D. Marrone, P. Mauskopf, R. O'Brient, S. Padin, T. Reck, L. Swenson, J. Zmuidzinas

Proceedings Volume 8452, 84520R (2012) https://doi.org/10.1117/12.927070

KEYWORDS: Resonators, Tin, Spectroscopy, Prototyping, Capacitors, Sensors, Niobium, Quasiparticles, Silicon, Galactic astronomy

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Proceedings Article | 27 September 2012 Paper

The CCAT 25m diameter submillimeter-wave telescope

David Woody, Steve Padin, Eric Chauvin, Bruno Clavel, German Cortes, Andy Kissil, John Lou, Paul Rasmussen, David Redding, Jeff Zolkower

Proceedings Volume 8444, 84442M (2012) https://doi.org/10.1117/12.925229

KEYWORDS: Telescopes, Wavefronts, Sensors, Control systems, Actuators, Distortion, Cameras, Reflectors, Image segmentation, Mirrors

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Proceedings Article | 24 September 2012 Paper

South Pole Telescope software systems: control, monitoring, and data acquisition

K. Story, E. Leitch, P. Ade, K. Aird, J. Austermann, J. Beall, D. Becker, A. Bender, B. Benson, L. Bleem, J. Britton, J. Carlstrom, C. Chang, H. Chiang, H-M. Cho, T. Crawford, A. Crites, A. Datesman, T. de Haan, M. Dobbs, W. Everett, A. Ewall-Wice, E. George, N. Halverson, N. Harrington, J. Henning, G. Hilton, W. Holzapfel, S. Hoover, N. Huang, J. Hubmayr, K. Irwin, M. Karfunkle, R. Keisler, J. Kennedy, A. Lee, D. Li, M. Lueker, D. Marrone, J. McMahon, J. Mehl, S. Meyer, J. Montgomery, T. Montroy, J. Nagy, T. Natoli, J. Nibarger, M. Niemack, V. Novosad, S. Padin, C. Pryke, C. Reichardt, J. Ruhl, B. Saliwanchik, J. Sayre, K. Schaffer, E. Shirokoff, G. Smecher, B. Stalder, C. Tucker, K. Vanderlinde, J. Vieira, G. Wang, R. Williamson, V. Yefremenko, K. Yoon, E. Young

Proceedings Volume 8451, 84510T (2012) https://doi.org/10.1117/12.925808

KEYWORDS: Control systems, Sensors, Telescopes, Data archive systems, Antennas, Human-machine interfaces, Bolometers, Data acquisition, Detection and tracking algorithms, Data storage

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Proceedings Article | 24 September 2012 Paper

Electromagnetic design for SuperSpec: a lithographically-patterned millimetre-wave spectrograph

P. Barry, E. Shirokoff, A. Kovács, T. Reck, S. Hailey-Dunsheath, C. McKenney, L. Swenson, M. Hollister, H. Leduc, S. Doyle, R. O'Brient, N. Llombart, D. Marrone, G. Chattopadhyay, P. Day, S. Padin, C. Bradford, P. Mauskopf, J. Zmuidzinas

Proceedings Volume 8452, 84522F (2012) https://doi.org/10.1117/12.927089

KEYWORDS: Spectroscopy, Resonators, Sensors, Tin, Absorption, Superconductors, Inductance, Spectrographs, Tolerancing, Waveguides

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Proceedings Article | 24 September 2012 Paper

Performance and on-sky optical characterization of the SPTpol instrument

E. George, P. Ade, K. Aird, J. Austermann, J. Beall, D. Becker, A. Bender, B. Benson, L. Bleem, J. Britton, J. Carlstrom, C. Chang, H. Chiang, H.-M. Cho, T. Crawford, A. Crites, A. Datesman, T. de Haan, M. Dobbs, W. Everett, A. Ewall-Wice, N. Halverson, N. Harrington, J. Henning, G. Hilton, W. Holzapfel, S. Hoover, N. Huang, J. Hubmayr, K. Irwin, M. Karfunkle, R. Keisler, J. Kennedy, A. Lee, E. Leitch, D. Li, M. Lueker, D. Marrone, J. McMahon, J. Mehl, S. Meyer, J. Montgomery, T. Montroy, J. Nagy, T. Natoli, J. Nibarger, M. Niemack, V. Novosad, S. Padin, C. Pryke, C. Reichardt, J. Ruhl, B. Saliwanchik, J. Sayre, K. Schaffer, E. Shirokoff, K. Story, C. Tucker, K. Vanderlinde, J. Vieira, G. Wang, R. Williamson, V. Yefremenko, K. Yoon, E. Young

Proceedings Volume 8452, 84521F (2012) https://doi.org/10.1117/12.925586

KEYWORDS: Sensors, Bolometers, Polarization, Telescopes, Calibration, Mirrors, Receivers, Thermography, Superconductors, Picosecond phenomena

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Proceedings Article | 24 September 2012 Paper

SuperSpec: design concept and circuit simulations

Attila Kovács, Peter Barry, Charles Bradford, Goutam Chattopadhyay, Peter Day, Simon Doyle, Steve Hailey-Dunsheath, Matthew Hollister, Christopher McKenney, Henry LeDuc, Nuria Llombart, Daniel Marrone, Philip Mauskopf, Roger O'Brient, Stephen Padin, Loren Swenson, Jonas Zmuidzinas

Proceedings Volume 8452, 84522G (2012) https://doi.org/10.1117/12.927160

KEYWORDS: Resonators, Spectroscopy, Spectral resolution, Sensors, Lithography, Space telescopes, Tolerancing, Device simulation, Dielectrics, Telescopes

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Proceedings Article | 10 November 2011 Paper

Model-based wavefront control for CCAT

David Redding, John Lou, Andy Kissil, Matt Bradford, Steve Padin, David Woody

Proceedings Volume 8336, 83360Q (2011) https://doi.org/10.1117/12.916694

KEYWORDS: Sensors, Telescopes, Error analysis, Wavefronts, Phase modulation, Actuators, Image segmentation, Mirrors, Motion measurement, Control systems

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Proceedings Article | 11 August 2010 Paper

Modeling a large submillimeter-wave observatory

John Lou, Andy Kissil, Dave Redding, Matt Bradford, Steve Padin, David Woody

Proceedings Volume 7733, 773326 (2010) https://doi.org/10.1117/12.856493

KEYWORDS: Wavefronts, Image segmentation, Sensors, Wavefront sensors, Error analysis, Mirrors, Control systems, Telescopes, Actuators, Motion models

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Proceedings Article | 6 August 2010 Paper

CCAT optics

S. Padin, M. Hollister, S. Radford, J. Sayers, D. Woody, J. Zmuidzinas, G. Cortes-Medellin, T. Sebring, G. Stacey

Proceedings Volume 7733, 77334Y (2010) https://doi.org/10.1117/12.856489

KEYWORDS: Cameras, Sensors, Telescopes, Relays, Space telescopes, Mirrors, Scattering, Wavefronts, Spectrometers, Reflectivity

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Proceedings Article | 5 August 2010 Paper

CFRP truss for the CCAT 25m diameter submillimeter-wave telescope

David Woody, Stephen Padin, Thomas Sebring

Proceedings Volume 7733, 77332B (2010) https://doi.org/10.1117/12.856498

KEYWORDS: Distortion, Interfaces, Telescopes, 3D modeling, Temperature metrology, Space telescopes, Actuators, Finite element methods, Reflectors, Optical instrument design

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Proceedings Article | 5 August 2010 Paper

Wavefront controls for a large submillimeter-wave observatory

David Redding, John Lou, Andy Kissil, Matt Bradford, Steve Padin, David Woody

Proceedings Volume 7733, 773329 (2010) https://doi.org/10.1117/12.858097

KEYWORDS: Control systems, Error analysis, Telescopes, Sensors, Wavefronts, Actuators, Optical testing, Monte Carlo methods, Mirrors, Filtering (signal processing)

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Proceedings Article | 8 October 2004 Paper

The South Pole Telescope

John Ruhl, Peter Ade, John Carlstrom, Hsiao-Mei Cho, Thomas Crawford, Matt Dobbs, Chris Greer, Nils Halverson, William Holzapfel, Trevor Lanting, Adrian Lee, Erik Leitch, Jon Leong, Wenyang Lu, Martin Lueker, Jared Mehl, Stephan Meyer, Joe Mohr, Steve Padin, T. Plagge, Clem Pryke, Marcus Runyan, Dan Schwan, M. Sharp, Helmuth Spieler, Zak Staniszewski, Antony Stark

Proceedings Volume 5498, (2004) https://doi.org/10.1117/12.552473

KEYWORDS: Sensors, Telescopes, Bolometers, Anisotropy, Receivers, Atmospheric sensing, Polarization, Mirrors, Galaxy groups and clusters, Scattering

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Proceedings Article | 16 September 2004 Paper

Parametric modeling and control of telescope wind-induced vibration

Douglas MacMynowski, George Angeli, Konstantinos Vogiatzis, Joeleff Fitzsimmons, Stephen Padin

Proceedings Volume 5497, (2004) https://doi.org/10.1117/12.552282

KEYWORDS: Mirrors, Telescopes, Turbulence, Space telescopes, Optical instrument design, Systems modeling, Performance modeling, Secondary tip-tilt mirrors, Wind measurement, Control systems

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Proceedings Article | 16 January 2003 Paper

Design and fabrication of a large vertical-travel silicon inchworm microactuator for the Advanced Segmented Silicon Space Telescope

Eui-Hyeok Yang, Richard Dekany, Stephen Padin

Proceedings Volume 4981, (2003) https://doi.org/10.1117/12.476282

KEYWORDS: Actuators, Silicon, Mirrors, Space telescopes, Microelectromechanical systems, Microactuators, Semiconducting wafers, Polymers, Deep reactive ion etching, Telescopes

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Showing 5 of 36 publications

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