Mr. Ningfeng Zhu Profile

Ningfeng Zhu

at Univ of Pennsylvania

SPIE Involvement:

Author

Publications (20)

Proceedings Article | 12 September 2023 Open Access

Open Access

Paper

BoloCalc: a sensitivity calculator for the design of Simons Observatory (Erratum)

Charles Hill, Sarah Marie Bruno, Sara Simon, Aamir Ali, Kam Arnold, Peter Ashton, Darcy Barron, Sean Bryan, Yuji Chinone, Gabriele Coppi, Kevin Crowley, Ari Cukierman, Simon Dicker, Jo Dunkley, Giulio Fabbian, Nicholas Galitzki, Patricio Gallardo, Jon Gudmundsson, Johannes Hubmayr, Brian Keating, Akito Kusaka, Adrian Lee, Frederick Matsuda, Philip Mauskopf, Jeffrey McMahon, Michael Niemack, Giuseppe Puglisi, Mayuri Sathyanarayana Rao, Maria Salatino, Carlos Sierra, Suzanne Staggs, Aritoki Suzuki, Grant Teply, Joel Ullom, Benjamin Westbrook, Zhilei Xu, Ningfeng Zhu

Proceedings Volume 10708, 107084C (2023) https://doi.org/10.1117/12.3010424

KEYWORDS: Observatories, Design and modelling, Raman spectroscopy, Radio astronomy, Cosmology, Astronomy, Astronomical telescopes, Alternate lighting of surfaces

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Proceedings Article | 31 August 2022 Presentation + Paper

Presentation + Paper

CCAT-prime: design of the Mod-Cam receiver and 280 GHz MKID instrument module

Eve Vavagiakis, Cody Duell, Jason Austermann, James Beall, Tanay Bhandarkar, Scott Chapman, Steve Choi, Gabriele Coppi, Simon Dicker, Mark Devlin, Rodrigo Freundt, Jiansong Gao, Christopher Groppi, Terry Herter, Zachary Huber, Johannes Hubmayr, Doug Johnstone, Ben Keller, Anna Kofman, Yaqiong Li, Philip Mauskopf, Jeff McMahon, Jenna Moore, Colin Murphy, Michael Niemack, Thomas Nikola, John Orlowski-Scherer, Kayla Rossi, Adrian Sinclair, Gordon Stacey, Joel Ullom, Michael Vissers, Jordan Wheeler, Zhilei Xu, Ningfeng Zhu, Bugao Zou

Proceedings Volume 12190, 1219004 (2022) https://doi.org/10.1117/12.2630115

KEYWORDS: Sensors, Cryogenics, Aluminum, Receivers, Optical filters, Detector arrays, Telescopes, Metamaterials, Magnetism, Carbon

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Proceedings Article | 31 December 2020 Presentation + Paper

Presentation + Paper

The integration and testing program for the Simons Observatory Large Aperture Telescope optics tubes

Kathleen Harrington, Carlos Sierra, Grace Chesmore, Shreya Sutariya, Aamir Ali, Steve Choi, Nicholas Cothard, Simon Dicker, Nicholas Galitzki, Shuay-Pwu Patty Ho, Anna Kofman, Brian Koopman, Jack Lashner, Jeff McMahon, Michael Niemack, John Orlowski-Scherer, Joseph Seibert, Max Silva-Feaver, Eve Vavagiakis, Zhilei Xu, Ningfeng Zhu

Proceedings Volume 11453, 1145318 (2020) https://doi.org/10.1117/12.2562647

KEYWORDS: Telescopes, Observatories, Integrated optics, Wafer-level optics, Sensors, Cryogenics, Optical fabrication, Microwave radiation, Bolometers, Receivers

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Proceedings Article | 18 December 2020 Poster + Presentation + Paper

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 | 16 December 2020 Presentation + Paper

Presentation + Paper

The Simons Observatory: overview of data acquisition, control, monitoring, and computer infrastructure

Brian Koopman, Jack Lashner, Lauren Saunders, Matthew Hasselfield, Tanay Bhandarkar, Sanah Bhimani, Steve Choi, Cody Duell, Nicholas Galitzki, Kathleen Harrington, Adam Hincks, Shuay-Pwu Patty Ho, Laura Newburgh, Christian Reichardt, Joseph Seibert, Jacob Spisak, Benjamin Westbrook, Zhilei Xu, Ningfeng Zhu

Proceedings Volume 11452, 1145208 (2020) https://doi.org/10.1117/12.2561771

KEYWORDS: Observatories, Data acquisition, Telescopes, Microwave radiation, Control systems design, Control systems, Sensors, Bolometers, Optical instrument design, Distributed computing

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Proceedings Article | 16 December 2020 Poster + Presentation + Paper

Poster + Presentation + Paper

Design and fabrication of metamaterial anti-reflection coatings for the Simons Observatory

Joseph Golec, Jeffrey McMahon, Aamir Ali, Grace Chesmore, Leah Cooperrider, Simon Dicker, Nicholas Galitzki, Kathleen Harrington, Rebecca Jackson, Benjamin Westbrook, Edward Wollack, Zhilei Xu, Ningfeng Zhu

Proceedings Volume 11451, 114515T (2020) https://doi.org/10.1117/12.2561720

KEYWORDS: Metamaterials, Observatories, Antireflective coatings, Optics manufacturing, Telescopes, Microwave radiation, Sensors, Bolometers, Optical coatings, Silicon

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Proceedings Article | 14 December 2020 Presentation + Paper

Presentation + Paper

The Simons Observatory: the Large Aperture Telescope Receiver (LATR) integration and validation results

Zhilei Xu, Tanay Bhandarkar, Gabriele Coppi, Anna Kofman, John Orlowski-Scherer, Ningfeng Zhu, Aamir Ali, Kam Arnold, Jason Austermann, Steve Choi, Jake Connors, Nicholas Cothard, Mark Devlin, Simon Dicker, Bradley Dober, Shannon Duff, Giulio Fabbian, Nicholas Galitzki, Saianeesh Haridas, Katheleen Harrington, Erin Healy, Shuay-Pwu Patty Ho, Johannes Hubmayr, Jeffrey Iuliano, Jack Lashner, Yaqiong Li, Michele Limon, Brian Koopman, Heather McCarrick, Jenna Moore, Federico Nati, Michael Niemack, Christian Reichardt, Karen Sarmiento, Joseph Seibert, Maximiliano Silva-Feaver, Rita Sonka, Suzanne Staggs, Robert Thornton, Eve Vavagiakis, Michael Vissers, Samantha Walker, Yuhan Wang, Edward Wollack, Kaiwen Zheng

Proceedings Volume 11453, 1145315 (2020) https://doi.org/10.1117/12.2576151

KEYWORDS: Observatories, Telescopes, Receivers, Tellurium, Cryogenics, Sensors, Optical instrument design, Optical alignment, Microwave radiation, Integrated optics

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Proceedings Article | 6 August 2018 Paper

Paper

Systematic uncertainties in the Simons Observatory: optical effects and sensitivity considerations

Patricio Gallardo, Jon Gudmundsson, Brian Koopman, Frederick Matsuda, Sara Simon, Aamir Ali, Sean Bryan, Yuji Chinone, Gabriele Coppi, Nicholas Cothard, Mark Devlin, Simon Dicker, Giulio Fabbian, Nicholas Galitzki, Charles Hill, Brian Keating, Akito Kusaka, Jacob Lashner, Adrian Lee , Michele Limon, Philip Mauskopf , Jeff McMahon, Federico Nati , Michael Niemack, John Orlowski-Scherer, Stephen Parshley , Giuseppe Puglisi, Christian Reichardt , Maria Salatino, Suzanne Staggs, Aritoki Suzuki, Eve Vavagiakis, Edward Wollack, Zhilei Xu, Ningfeng Zhu

Proceedings Volume 10708, 107083Y (2018) https://doi.org/10.1117/12.2312971

KEYWORDS: Telescopes, Polarization, Physics, Cameras, Optical simulations, Reflectors, Reflectivity, Sensors, Geometrical optics, Optical components

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Proceedings Article | 31 July 2018 Presentation + Paper

Presentation + Paper

The Simons Observatory: instrument overview

Nicholas Galitzki, Aamir Ali, Kam Arnold, Peter Ashton, Jason Austermann, Carlo Baccigalupi, Taylor Baildon, Darcy Barron, James Beall, Shawn Beckman, Sarah Marie Bruno, Sean Bryan, Paolo Calisse, Grace Chesmore, Yuji Chinone, Steve Choi, Gabriele Coppi, Kevin Crowley, Ari Cukierman, Mark Devlin, Simon Dicker, Bradley Dober, Shannon Duff, Jo Dunkley, Giulio Fabbian, Patricio Gallardo, Martina Gerbino, Neil Goeckner-Wald, Joseph Golec, Jon Gudmundsson, Erin Healy, Shawn Henderson, Charles Hill, Gene Hilton, Shuay-Pwu Patty Ho, Logan Howe, Johannes Hubmayr, Oliver Jeong, Brian Keating, Brian Koopman, Kenji Kiuchi, Akito Kusaka, Jacob Lashner, Adrian Lee, Yaqiong Li, Michele Limon, Marius Lungu, Frederick Matsuda, Philip Mauskopf, Andrew May, Nialh McCallum, Jeff McMahon, Federico Nati, Michael Niemack, John Orlowski-Scherer, Stephen Parshley, Lucio Piccirillo, Mayuri Sathyanarayana Rao, Christopher Raum, Maria Salatino, Joseph Seibert, Carlos Sierra, Max Silva-Feaver, Sara Simon, Suzanne Staggs, Jason Stevens, Aritoki Suzuki, Grant Teply, Robert Thornton, Calvin Tsai, Joel Ullom, Eve Vavagiakis, Michael Vissers, Benjamin Westbrook, Edward Wollack, Zhilei Xu, Ningfeng Zhu

Proceedings Volume 10708, 1070804 (2018) https://doi.org/10.1117/12.2312985

KEYWORDS: Sensors, Receivers, Telescopes, Cryogenics, Physics, Wafer-level optics, Semiconducting wafers, Lenses, Staring arrays, Observatories

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Proceedings Article | 23 July 2018 Paper

Paper

Studies of systematic uncertainties for Simons Observatory: polarization modulator related effects

Maria Salatino, Jacob Lashner, Martina Gerbino, Sara Simon, Joy Didier, Aamir Ali, Peter Ashton , Sean Bryan, Yuji Chinone, Kevin Coughlin, Kevin Crowley, Giulio Fabbian, Nicholas Galitzki, Neil Goeckner-Wald , Jon Gudmundsson , Charles Hill, Brian Keating, Akito Kusaka, Adrian Lee, Jeffrey McMahon, Amber Miller, Giuseppe Puglisi, Christian Reichardt, Grant Teply, Zhilei Xu, Ningfeng Zhu

Proceedings Volume 10708, 1070848 (2018) https://doi.org/10.1117/12.2312993

KEYWORDS: Sensors, Polarization, Sapphire, Metamaterials, Reflection, Optical components, Modulation, Refraction, Antireflective coatings, Physics

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Proceedings Article | 17 July 2018 Paper

Paper

Designs for next generation CMB survey strategies from Chile

Jason Stevens, Neil Goeckner-Wald, Reijo Keskitalo, Nialh McCallum, Aamir Ali, Julian Borrill, Michael Brown, Yuji Chinone, Patricio Gallardo, Akito Kusaka, Adrian Lee, Jeff McMahon, Michael Niemack, Lyman Page, Giuseppe Puglisi, Maria Salatino, Suet Ying Mak, Grant Teply, Daniel Thomas, Eve Vavagiakis, Edward Wollack, Zhilei Xu, Ningfeng Zhu

Proceedings Volume 10708, 1070841 (2018) https://doi.org/10.1117/12.2313898

KEYWORDS: Telescopes, Sun, Sensors, Polarization, Physics, Device simulation, Optical instrument design, Anisotropy, Signal detection

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New telescopes are being built to measure the Cosmic Microwave Background (CMB) with unprecedented sensitivity, including Simons Observatory (SO), CCAT-prime, the BICEP Array, SPT-3G, and CMB Stage-4. We present observing strategies for telescopes located in Chile that are informed by the tools used to develop recent Atacama Cosmology Telescope (ACT) and Polarbear surveys. As with ACT and Polarbear, these strategies are composed of scans that sweep in azimuth at constant elevation.

We explore observing strategies for both small (0.42 m) aperture telescopes (SAT) and a large (6 m) aperture telescope (LAT). We study strategies focused on small sky areas to search for inflationary gravitational waves as well as strategies spanning roughly half the low-foreground sky to constrain the effective number of relativistic species and measure the sum of neutrino masses via the gravitational lensing signal due to large scale structure. We present these strategies specifically considering the telescope hardware and science goals of the SO, located at 23° South latitude, 67.8° West longitude.

Observations close to the Sun and the Moon can introduce additional systematics by applying additional power to the instrument through telescope sidelobes. Significant side lobe contamination in the data can occur even at tens of degrees or more from bright sources. Therefore, we present several strategies that implement Sun and Moon avoidance constraints into the telescope scheduling.

Scan strategies can also be a powerful tool to diagnose and mitigate instrumental systematics either by using multiple scans to average down systematics or by providing null tests to diagnose problems. We discuss methods for quantifying the ability of an observation strategy to achieve this.

Strategies for resolving conflicts between simultaneously visible fields are discussed. We focus on maximizing telescope time spent on science observations. It will also be necessary to schedule calibration measurements, however that is beyond the scope of this work. The outputs of this study are algorithms that can generate specific schedule commands for the Simons Observatory instruments.

Proceedings Article | 9 July 2018 Presentation + Paper

Presentation + Paper

Prime-Cam: a first-light instrument for the CCAT-prime telescope

E. Vavagiakis, Z. Ahmed, A. Ali, K. Basu, N. Battaglia, F. Bertoldi, R. Bond, R. Bustos, S. Chapman, D. Chung, G. Coppi, N. Cothard, S. Dicker, C. Duell, S. Duff, J. Erler, M. Fich, N. Galitzki, P. Gallardo, S. Henderson, T. Herter, G. Hilton, J. Hubmayr, K. Irwin, B. Koopman, J. McMahon, N. Murray, M. Niemack, T. Nikola, M. Nolta, J. Orlowski-Scherer, S. Parshley, D. Riechers, K. Rossi, D. Scott, C. Sierra, M. Silva-Feaver, S. Simon, G. Stacey, J. Stevens, J. Ullom, M. Vissers, S. Walker, E. Wollack, Z. Xu, N. Zhu

Proceedings Volume 10708, 107081U (2018) https://doi.org/10.1117/12.2313868

KEYWORDS: Sensors, Telescopes, Spectroscopy, Receivers, Detector arrays, Silicon, Cryogenics, Polarization, Electronics, Physics

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Proceedings Article | 9 July 2018 Paper

Paper

Development of calibration strategies for the Simons Observatory

Sean Bryan, Sara Simon, Martina Gerbino, Grant Teply, Amir Ali, Yuji Chinone, Kevin Crowley, Giulio Fabbian, Patricio Gallardo, Neil Goeckner-Wald, Brian Keating, Brian Koopman, Akito Kusaka, Frederick Matsuda, Philip Mauskopf, Jeff McMahon, Federico Nati, Giuseppe Puglisi, Christian Reichardt, Maria Salatino, Zhilei Xu, Ningfeng Zhu

Proceedings Volume 10708, 1070840 (2018) https://doi.org/10.1117/12.2313832

KEYWORDS: Calibration, Atmospheric modeling, Polarization, Atmospheric sensing

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Proceedings Article | 9 July 2018 Paper

Paper

Cooldown strategies and transient thermal simulations for the Simons Observatory

Gabriele Coppi, Zhilei Xu, Aamir Ali, Nicholas Galitzki, Patricio Gallardo, Andrew May, Jack Orlowski-Scherer, Ningfeng Zhu, Mark Devlin, Simon Dicker, Brian Keating, Michele Limon, Marius Lungu, Jeff McMahon, Michael Niemack, Lucio Piccirillo, Giuseppe Puglisi, Maria Salatino, Sara Simon, Grant Teply, Robert Thornton, Eve Vavagiakis

Proceedings Volume 10708, 1070827 (2018) https://doi.org/10.1117/12.2312679

KEYWORDS: Switches, Telescopes, Observatories, Device simulation, Sensors, Physics, Fused deposition modeling, Wafer-level optics, Cameras, Receivers

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Proceedings Article | 9 July 2018 Paper

Paper

Simons Observatory large aperture receiver simulation overview

John Orlowski-Scherer, Ningfeng Zhu, Zhilei Xu, Aamir Ali, Kam Arnold, Peter Ashton, Gabriele Coppi, Mark Devlin, Simon Dicker, Nicholas Galitzki, Patricio Gallardo, Brian Keating , Adrian Lee, Michele Limon, Marius Lungu, Andrew May, Jeff McMahon, Michael Niemack, Lucio Piccirillo, Giuseppe Puglisi, Maria Salatino, Max Silva-Feaver, Sara Simon, Robert Thornton, Eve Vavagiakis

Proceedings Volume 10708, 107083X (2018) https://doi.org/10.1117/12.2312868

KEYWORDS: Finite element methods, Aluminum, Receivers, Sensors, Optical filters, Observatories, Physics, Telescopes, Thermal modeling

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Proceedings Article | 9 July 2018 Paper

Paper

Simons Observatory large aperture telescope receiver design overview

Ningfeng Zhu, John Orlowski-Scherer, Zhilei Xu, Aamir Ali, Kam Arnold, Peter Ashton, Gabriele Coppi, Mark Devlin, Simon Dicker, Nicholas Galitzki, Patricio Gallardo, Shawn Henderson, Shuay-Pwu Patty Ho, Johannes Hubmayr, Brian Keating, Adrian Lee, Michele Limon, Marius Lungu, Philip Mauskopf, Andrew May, Jeff McMahon, Michael Niemack, Lucio Piccirillo, Giuseppe Puglisi, Mayuri Sathyanarayana Rao, Maria Salatino, Max Silva-Feaver, Sara Simon, Suzanne Staggs, Robert Thornton, Joel Ullom, Eve Vavagiakis, Benjamin Westbrook, Edward Wollack

Proceedings Volume 10708, 1070829 (2018) https://doi.org/10.1117/12.2312871

KEYWORDS: Optical filters, Telescopes, Sensors, Switches, Receivers, Physics, Observatories, Space telescopes, Cryogenics, Physical cosmology

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Proceedings Article | 9 July 2018 Paper

Paper

Studies of systematic uncertainties for Simons Observatory: detector array effects

Kevin Crowley, Sara Simon, Max Silva-Feaver, Neil Goeckner-Wald, Aamir Ali, Jason Austermann, Michael Brown, Yuji Chinone, Ari Cukierman, Bradley Dober, Shannon Duff, Jo Dunkley, Josquin Errard, Giulio Fabbian, Patricio Gallardo, Shuay-Pwu Patty Ho, Johannes Hubmayr, Brian Keating, Akito Kusaka, Nialh McCallum, Jeff McMahon, Federico Nati, Michael Niemack, Giuseppe Puglisi, Mayuri Sathyanarayana Rao, Christian Reichardt, Maria Salatino, Praween Siritanasak, Suzanne Staggs, Aritoki Suzuki, Grant Teply, Daniel Thomas, Joel Ullom, Clara Vergès, Michael Vissers, Benjamin Westbrook, Edward Wollack, Zhilei Xu, Ningfeng Zhu

Proceedings Volume 10708, 107083Z (2018) https://doi.org/10.1117/12.2313414

KEYWORDS: Sensors, Polarization, Bolometers, Signal detection, Detector arrays, Calibration, Contamination, Antennas, Device simulation, Optical simulations

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Proceedings Article | 9 July 2018 Paper

Paper

Feedhorn development and scalability for Simons Observatory and beyond

Sara Simon, Joseph Golec, Aamir Ali, Jason Austermann, James Beall, Sarah Marie Bruno, Steve Choi, Kevin Crowley, Simon Dicker, Bradley Dober, Shannon Duff, Erin Healy, Charles Hill, Shuay-Pwu Patty Ho, Johannes Hubmayr, Yaqiong Li, Marius Lungu, Jeff McMahon, John Orlowski-Scherer, Maria Salatino, Suzanne Staggs, Edward Wollack, Zhilei Xu, Ningfeng Zhu

Proceedings Volume 10708, 107084B (2018) https://doi.org/10.1117/12.2313405

KEYWORDS: Silicon, Semiconducting wafers, Aluminum, Tolerancing, Detector arrays, Metals, Etching, Gold, Sensors, Coating

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Proceedings Article | 9 July 2018 Paper

Paper

BoloCalc: a sensitivity calculator for the design of Simons Observatory

Charles Hill, Sarah Marie Bruno, Sara Simon, Aamir Ali, Kam Arnold, Peter Ashton, Darcy Barron, Sean Bryan, Yuji Chinone, Gabriele Coppi, Kevin Crowley, Ari Cukierman, Simon Dicker, Jo Dunkley, Giulio Fabbian, Nicholas Galitzki, Patricio Gallardo, Jon Gudmundsson, Johannes Hubmayr, Brian Keating, Akito Kusaka, Adrian Lee, Frederick Matsuda, Philip Mauskopf, Jeffrey McMahon, Michael Niemack, Giuseppe Puglisi, Mayuri Sathyanarayana Rao, Maria Salatino, Carlos Sierra, Suzanne Staggs, Aritoki Suzuki, Grant Teply, Joel Ullom, Benjamin Westbrook, Zhilei Xu, Ningfeng Zhu

Proceedings Volume 10708, 1070842 (2018) https://doi.org/10.1117/12.2313916

KEYWORDS: Sensors, Cameras, Telescopes, Bolometers, Semiconducting wafers, Space telescopes, Physics, Atmospheric optics, Observatories, Thermography

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Proceedings Article | 6 July 2018 Paper

Paper

Cold optical design for the large aperture Simons' Observatory telescope

S. Dicker, P. Gallardo, J. Gudmundsson, P. Mauskopf, A. Ali, P. Ashton, G. Coppi, M. Devlin, N. Galitzki, S. P. Ho, C. Hill, J. Hubmayr, B. Keating, A. Lee, M. Limon, F. Matsuda, J. McMahon, M. Niemack, J. Orlowski-Scherer, L. Piccirillo, M. Salatino, S. Simon, S. Staggs, R. Thornton, J. Ullom, E. Vavagiakis, E. Wollack, Z. Xu, N. Zhu

Proceedings Volume 10700, 107003E (2018) https://doi.org/10.1117/12.2313444

KEYWORDS: Telescopes, Lenses, Sensors, Optical design, Wafer-level optics, Optical instrument design, Physics, Mirrors

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Showing 5 of 20 publications

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