Prof. John E. Carlstrom Profile

Prof. John E. Carlstrom

Director/KICP at Kavli Institute for Cosmological Physics

SPIE Involvement:

Author

Publications (24)

Proceedings Article | 24 August 2018

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

Proc. SPIE. 10708, Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy IX

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

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Proceedings Article | 1 August 2018

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

Proc. SPIE. 10708, Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy IX

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

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Proceedings Article | 31 July 2018

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

Proc. SPIE. 10708, Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy IX

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

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Proceedings Article | 9 July 2018

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

Proc. SPIE. 10708, Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy IX

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

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Proceedings Article | 9 July 2018

A VLBI receiving system for the South Pole Telescope

Junhan Kim, Daniel Marrone, Christopher Beaudoin, John Carlstrom, Shepherd Doeleman, Thomas Folkers, David Forbes, Christopher Greer, Eugene Lauria, Kyle Massingill, Evan Mayer, Chi Nguyen, George Reiland, Jason SooHoo, Antony Stark, Laura Vertatschitsch, Jonathan Weintroub, André Young

Proc. SPIE. 10708, Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy IX

KEYWORDS: Observatories, Telescopes, Electronics, Waveguides, Polarization, Calibration, Receivers, Control systems, Submillimeter telescopes, Radio interferometry

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Proceedings Article | 20 July 2016

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

Proc. SPIE. 9914, Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy VIII

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

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Proceedings Article | 19 July 2016

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

Proc. SPIE. 9914, Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy VIII

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

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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 | 23 July 2014

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

Proc. SPIE. 9153, Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy VII

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

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Proceedings Article | 5 October 2012

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

Proc. SPIE. 8452, Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy VI

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

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Proceedings Article | 5 October 2012

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

Proc. SPIE. 8452, Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy VI

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

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Proceedings Article | 27 September 2012

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

Proc. SPIE. 8452, Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy VI

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

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Proceedings Article | 24 September 2012

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

Proc. SPIE. 8452, Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy VI

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

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Proceedings Article | 24 September 2012

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

Proc. SPIE. 8451, Software and Cyberinfrastructure for Astronomy II

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

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Proceedings Article | 15 July 2010

Optical efficiency of feedhorn-coupled TES polarimeters for next-generation CMB instruments

J. Henning, J. W. Appel, J. E. Austermann, J. Beall, D. Becker, D. A. Bennett, L. E. Bleem, B. A. Benson, J. Britton, J. Carlstrom, C. L. Chang, H. M. Cho, A. T. Crites, T. Essinger-Hileman, W. Everett, E. M. George, N. Halverson, G. Hilton, W. L. Holzapfel, J. Hubmayr, K. Irwin, D. Li, J. McMahon, J. Mehl, S. Meyer, S. Moseley, J. P. Nibarger, M. Niemack, L. Parker, E. Shirokoff, S. M. Simon, S. Staggs, J. N. Ullom, K. U-Yen, C. Visnjic, E. Wollack, K. W. Yoon, E. Y. Young, Y. Zhao

Proc. SPIE. 7741, Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy V

KEYWORDS: Telescopes, Optical filters, Polarization, Sensors, Calibration, Physics, Polarimetry, Optical testing, Temperature metrology, Anisotropy

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Proceedings Article | 21 July 2008

BICEP2/SPUD: searching for inflation with degree scale polarimetry from the South Pole

Hien Trong Nguyen, John Kovac, Peter Ade, Randol Aikin, Steve Benton, James Bock, Justus Brevik, John Carlstrom, Darren Dowell, Lionel Duband, Sunil Golwala, Mark Halpern, Matthew Hasslefield, Kent Irwin, William Jones, Jonathan Kaufman, Brian Keating, Chao-Lin Kuo, Andrew Lange, Tomotake Matsumura, Barth Netterfield, Clem Pryke, John Ruhl, Chris Sheehy, Rashmi Sudiwala

Proc. SPIE. 7020, Millimeter and Submillimeter Detectors and Instrumentation for Astronomy IV

KEYWORDS: Staring arrays, Telescopes, Polarization, Sensors, Magnetism, Receivers, Polarimetry, Antennas, Microwave radiation, Signal detection

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Proceedings Article | 18 July 2008

Frequency selective bolometer development at Argonne National Laboratory

Aaron Datesman, John Pearson, Gensheng Wang, Volodymyr Yefremenko, Ralu Divan, Thomas Downes, Clarence Chang, Jeff McMahon, Stephan Meyer, John Carlstrom, Daniel Logan, Thushara Perera, Grant Wilson, Valentyn Novosad

Proc. SPIE. 7020, Millimeter and Submillimeter Detectors and Instrumentation for Astronomy IV

KEYWORDS: Bolometers, Gold, Cameras, Sensors, Etching, Silicon, Superconductors, Photoresist materials, Galactic astronomy, Semiconducting wafers

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Proceedings Article | 8 October 2004

The quasi-optical design of the QUaD Telescope

Gary Cahill, Creidhe O'Sullivan, J. Anthony Murphy, William Lanigan, Emily Gleeson, Peter Ade, James Bock, Melanie Bowden, John Carlstrom, Sarah Church, Ken Ganga, Walter Gear, John Harris, James Hinderks, Wayne Hu, John Kovac, Andrew Lange, Erik Leitch, Bruno Maffei, Olivier Mallie, Simon Melhuish, Angiola Orlando, Giampaolo Pisano, Lucio Piccirillo, Clem Pryke, Ben Rusholme, Andy Taylor, Keith Thompson, Michael Zemcov

Proc. SPIE. 5498, Millimeter and Submillimeter Detectors for Astronomy II

KEYWORDS: Zemax, Diffraction, Telescopes, Mirrors, Antireflective coatings, Polarization, Lenses, Coating, Wave plates, Optical instrument design

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Proceedings Article | 8 October 2004

CARMA: a new heterogeneous millimeter-wave interferometer

David Woody, Anthony Beasley, Alberto Bolatto, John Carlstrom, Andrew Harris, David Hawkins, James Lamb, Leslie Looney, Lee Mundy, Richard Plambeck, Stephen Scott, M. Wright

Proc. SPIE. 5498, Millimeter and Submillimeter Detectors for Astronomy II

KEYWORDS: Telescopes, Astronomy, Interferometers, Interferometry, Receivers, Antennas, Radiometry, Radio astronomy, Optical correlators, Visibility

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Proceedings Article | 8 October 2004

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

Proc. SPIE. 5498, Millimeter and Submillimeter Detectors for Astronomy II

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

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Proceedings Article | 28 September 2004

Measuring the cosmic microwave background polarization with the QUaD experiment

Melanie Bowden, Andy Taylor, Ken Ganga, Peter Ade, James Bock, Gary Cahill, John Carlstrom, Sarah Church, Walter Gear, James Hinderks, Wayne Hu, Brian Keating, John Kovac, Andrew Lange, Erik Leitch, Bruno Maffei, Olivier Mallie, Simon Melhuish, John Anthony Murphy, Giampaolo Pisano, Lucio Piccirillo, Clem Pryke, Ben Rusholme, Creidhe O'Sullivan, Keith Thompson, Michael Zemcov

Proc. SPIE. 5489, Ground-based Telescopes

KEYWORDS: Signal to noise ratio, Telescopes, Contamination, Polarization, Photons, Electrons, Physics, Microwave radiation, Acoustics, Anisotropy

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Proceedings Article | 12 November 1999

Demonstration of an image rejection mixer for high-frequency applications (26 to 36 GHz)

Cheryl Alexander, John Carlstrom

Proc. SPIE. 3795, Terahertz and Gigahertz Photonics

KEYWORDS: Manufacturing, Amplifiers, Receivers, Linear filtering, Diodes, Image filtering, Optical correlators, Cryogenics, Temperature metrology, Phase shifts

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Proceedings Article | 31 July 1998

Plans for a 10-m submillimeter-wave telescope at the South Pole

Antony Stark, John Carlstrom, Frank Israel, Karl Menten, Jeffrey Peterson, Thomas Phillips, Giorgio Sironi, Christopher Walker

Proc. SPIE. 3357, Advanced Technology MMW, Radio, and Terahertz Telescopes

KEYWORDS: Observatories, Diffraction, Monochromatic aberrations, Telescopes, Mirrors, Surface plasmons, Stars, Antennas, Galactic astronomy, Laminated object manufacturing

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A 10 meter diameter submillimeter-wave telescope has been proposed for installation and scientific use at the NSF Amundsen-Scott South Pole Station. Current evidence indicates that the South Pole is the best submillimeter-wave telescope site among all existing or proposed ground-based observatories. Proposed scientific programs place stringent requirements on the optical quality of the telescope design. In particular, reduction of the thermal background and offsets requires an off-axis, unblocked aperture, and the large field of view needed for survey observations requires shaped optics. This mix of design elements is well-suited for large-scale (square degree) mapping of line and continuum radiation from submillimeter-wave sources at moderate spatial resolutions (4 to 60 arcsecond beam size) and high sensitivity (milliJansky flux density levels). The telescope will make arcminute angular scale, high frequency Cosmic Microwave Background measurements from the best possible ground-based site, using an aperture which is larger than is currently possible on orbital or airborne platforms. The telescope design is homologous. Gravitational changes in pointing and focal length will be accommodated by active repositioning of the secondary mirror. The secondary support, consisting of a large, enclosed beam, permits mounting of either a standard set of Gregorian optics, or prime focus instrumentation packages for CMBR studies. A tertiary chopper is located at the exit pupil of the instrument. An optical design with a hyperboloidal primary mirror and a concave secondary mirror provides a flat focal surface. The relatively large classical aberrations present in such an optical arrangement can be small compared to diffraction at submillimeter wavelengths. Effective use of this telescope will require development of large (1000 element) arrays of submillimeter detectors which are background-limited when illuminated by antenna temperatures near 50 K.

Proceedings Article | 31 July 1998

DASI: Degree Angular Scale Interferometer for imaging anisotropy in the cosmic microwave background

Nils Halverson, John Carlstrom, Mark Dragovan, William Holzapfel, John Kovac

Proc. SPIE. 3357, Advanced Technology MMW, Radio, and Terahertz Telescopes

KEYWORDS: Telescopes, Interferometers, Amplifiers, Receivers, Polarizers, Field effect transistors, Microwave radiation, Acoustics, Optical correlators, Anisotropy

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Proceedings Article | 31 July 1998

CSO-JCMT Interferometer and 183-GHz radiometric phase correction

Oliver Lay, Martina Wiedner, John Carlstrom, Richard Hills

Proc. SPIE. 3357, Advanced Technology MMW, Radio, and Terahertz Telescopes

KEYWORDS: Telescopes, Oscillators, Interferometers, Calibration, Water, Receivers, Antennas, Radiometry, Phase measurement, Visibility

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Showing 5 of 24 publications

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