Design and Performance of a 30/40 GHz Diplexed Focal Plane for the BICEP Array

Autor: Corwin Shiu, Ahmed Soliman, Roger O’Brient, Bryan Steinbach, James J. Bock, Clifford F. Frez, William C. Jones, Krikor. G. Megerian, Lorenzo Moncelsi, Alessandro Schillaci, Anthony D. Turner, Alexis C. Weber, Cheng Zhang, Silvia Zhang

Publikováno v: The Astrophysical Journal Supplement Series, Vol 272, Iss 1, p 12 (2024)

We demonstrate a wideband diplexed focal plane suitable for observing low-frequency foregrounds that are important for cosmic microwave background polarimetry. The antenna elements are composed of slotted bowtie antennas with 60% bandwidth that can b

Externí odkaz: https://doaj.org/article/bbee43316a53443b891dc7530e355974

Optical Characterization of the Keck Array and BICEP3 CMB Polarimeters from 2016 to 2019

Autor: R. Basu Thakur, P. A. R. Ade, Mark Halpern, Sarah M. Harrison, S. Fliescher, Howard Hui, A. D. Turner, E. Bullock, E. Karpel, C. Tucker, B. Racine, Bryan Steinbach, S. A. Kernasovskiy, Lorenzo Moncelsi, Mandana Amiri, Victor Buza, T. St. Germaine, H. T. Nguyen, K. L. Thompson, E. M. Leitch, J. R. Cheshire, Chao Zhang, C. L. Kuo, J. J. Bock, H. Boenish, S. Fatigoni, L. Duband, S. R. Hildebrandt, King Tong Lau, E. Young, Roger O'Brient, John M Kovac, Kirit Karkare, Abigail G. Vieregg, Toshiya Namikawa, Zeeshan Ahmed, D. V. Wiebe, R. Schwarz, C. Pryke, Alessandro Schillaci, C. D. Sheehy, E. Yang, Kent D. Irwin, Stefan Richter, R. V. Sudiwala, S. Kefeli, S. Palladino, W. L. K. Wu, J. Cornelison, A. Wandui, Marion Dierickx, Carl D. Reintsema, C. L. Wong, J. Willmert, J. E. Tolan, G. Hall, K. G. Megerian, Gene C. Hilton, Denis Barkats, C. Yu, A. Cukierman, Jake Connors, R. W. Ogburn, J. A. Grayson, M. Crumrine, K. W. Yoon, C. Umilta, A. C. Weber, Colin A. Bischoff, J. Kang, Calvin B. Netterfield, Jeffrey P. Filippini, Ahmed Soliman

Publikováno v: Journal of Low Temperature Physics. 199:824-832

The BICEP/Keck experiment (BK) is a series of small-aperture refracting telescopes observing degree-scale Cosmic Microwave Background (CMB) polarization from the South Pole in search of a primordial $B$-mode signature. This $B$-mode signal arises fro

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1f209a234d6dbda6849edca2344410f2
https://doi.org/10.1007/s10909-020-02392-8

Thermal Kinetic Inductance Detectors Camera: System Level Design, Strategy and Performance Forecast

Autor: Clifford Frez, James J. Bock, Bryan Steinbach, A. Wandui, Anthony D. Turner, Roger O'Brient, L. Minutolo

The next-generation instruments for millimeter-wave astronomy will require large arrays of detectors to surpass current performance [see (Hui, 2016) and (Ade, 2018)]. On account of integration challenges, focal planes relying on transition edge senso

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::18186c0813164f33344dd501d8579280
https://resolver.caltech.edu/CaltechAUTHORS:20210420-091658021

Observing low elevation sky and the CMB Cold Spot with BICEP3 at the South Pole

Autor: Lingzhen Zeng, Paul K. Grimes, Denis Barkats, G. Hall, J. Cornelison, P. A. R. Ade, Jeffrey P. Filippini, E. V. Denison, Ki Won Yoon, S. Henderson, S. Richter, Edward D. Young, R. Schwarz, Y. Nakato, N. Precup, Shengyu Zhang, Sarah M. Harrison, Lorenzo Moncelsi, Che-Hang Yu, Lionel Duband, C. Pryke, Rashmikant V. Sudiwala, G. P. Teply, J. Kang, S. Fliescher, C. Umiltà, A. Wandui, Abigail G. Vieregg, A. C. Weber, Kent D. Irwin, J. Willmert, Gene C. Hilton, H. Boenish, Bryan Steinbach, A. Cukierman, John M Kovac, H. T. Nguyen, Donald V. Wiebe, Kirit Karkare, E. M. Leitch, King Tong Lau, J. Cheshire, Colin A. Bischoff, Toshiya Namikawa, Ahmed Soliman, S. Kefeli, Benjamin L. Schmitt, Eui-Hyeok Yang, E. Bullock, Johannes Hubmayr, W. L. K. Wu, Mark Halpern, Roger O'Brient, D. C. Goldfinger, Anthony D. Turner, T. Prouve, E. Karpel, C. L. Wong, J. E. Tolan, Keith L. Thompson, Sergi R. Hildebrandt, Alessandro Schillaci, Chao-Lin Kuo, Jake Connors, Victor Buza, S. Fatigoni, S. A. Kernasovskiy, James J. Bock, S. Palladino, Carl D. Reintsema, C. D. Sheehy, T. St. Germaine, Marion Dierickx, M. Crumrine, R. W. Ogburn, Zeeshan Ahmed, R. Basu Thakur, M. Eiben, J. A. Grayson, Carole Tucker, B. Racine, Howard Hui, K. G. Megerian, Neil Goeckner-Wald, L. Minutolo, Chao Zhang, Mandana Amiri

Publikováno v: Proc.SPIE Int.Soc.Opt.Eng.
SPIE Astronomical Telescopes + Instrumentation 2020
SPIE Astronomical Telescopes + Instrumentation 2020, Dec 2020, Online, United States. pp.114532D, ⟨10.1117/12.2562066⟩

BICEP3 is a 520 mm aperture on-axis refracting telescope at the South Pole, which observes the polarization of the cosmic microwave background (CMB) at 95 GHz to search for the B-mode signal from inflationary gravitational waves. In addition to this

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::82b64dc8607964d124e939f12d85a232
http://arxiv.org/abs/2012.09363

Ultra-low noise TES bolometer arrays for the US SAFARI contribution

Autor: Gert de Lange, Hien Nguyen, Charles M. Bradford, Howard Hui, M. Kenyon, Pierre Echternach, Roger O'Brient, Damian Audley, Jan van der Kuur

Publikováno v: Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy X.

We are developing ultra-low noise transition edge sensor (TES) bolometer arrays for the long-wavelength grating spectrometer modules of SAFARI, part of the cryogenically-cooled SPICA mission now in phase-A study in Europe. These devices target a per-

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::450ecb56cac396232404d1a31e0cd5a7
https://doi.org/10.1117/12.2563116