Related papers: Half-wave Plates for the Spider Cosmic Microwave B…

CLOVER - A new instrument for measuring the B-mode polarization of the CMB

We describe the design and expected performance of Clover, a new instrument designed to measure the B-mode polarization of the cosmic microwave background. The proposed instrument will comprise three independent telescopes operating at 90,…

Astrophysics · Physics 2007-05-23 A. C. Taylor , A. Challinor , D. Goldie , K. Grainge , M. E. Jones , A. N. Lasenby , S. Withington , G. Yassin , W. K. Gear , L. Piccirillo , P. Ade , P. D. Mauskopf , B. Maffei , G. Pisano

Empirical modelling of the BLASTPol achromatic half-wave plate for precision submillimetre polarimetry

A cryogenic achromatic half-wave plate (HWP) for submillimetre astronomical polarimetry has been designed, manufactured, tested, and deployed in the Balloon-borne Large-Aperture Submillimeter Telescope for Polarimetry (BLASTPol). The design…

Instrumentation and Methods for Astrophysics · Physics 2015-06-11 Lorenzo Moncelsi , Peter Ade , Francesco Elio Angile , Steven Benton , Mark Devlin , Laura Fissel , Natalie Gandilo , Joshua Gundersen , Tristan Matthews , C. Barth Netterfield , Giles Novak , David Nutter , Enzo Pascale , Frederick Poidevin , Giorgio Savini , Douglas Scott , Juan Soler , Locke Spencer , Matthew Truch , Gregory Tucker , Jin Zhang

QUaD: A High-Resolution Cosmic Microwave Background Polarimeter

We describe the QUaD experiment, a millimeter-wavelength polarimeter designed to observe the Cosmic Microwave Background (CMB) from a site at the South Pole. The experiment comprises a 2.64 m Cassegrain telescope equipped with a…

Astrophysics · Physics 2011-02-11 QUaD collaboration , J. R. Hinderks , P. Ade , J. Bock , M. Bowden , M. L. Brown , G. Cahill , J. E. Carlstrom , P. G. Castro , S. Church , T. Culverhouse , R. Friedman , K. Ganga , W. K. Gear , S. Gupta , J. Harris , V. Haynes , B. G. Keating , J. Kovac , E. Kirby , A. E. Lange , E. Leitch , O. E. Mallie , S. Melhuish , Y. Memari , J. A. Murphy , A. Orlando , R. Schwarz , C. O'Sullivan , L. Piccirillo , C. Pryke , N. Rajguru , B. Rusholme , A. N. Taylor , K. L. Thompson , C. Tucker , A. H. Turner , E. Y. S. Wu , M. Zemcov

The Submillimeter Array Polarimeter

We describe the Submillimeter Array (SMA) Polarimeter, a polarization converter and feed multiplexer installed on the SMA. The polarimeter uses narrow-band quarter-wave plates to generate circular polarization sensitivity from the…

Astrophysics · Physics 2009-11-13 Daniel P. Marrone , Ramprasad Rao

Half-wave-plate non idealities propagated to component separated CMB $B$-modes

We assess the impact of non-ideal, continuously rotating half-wave plates (HWPs) on cosmic microwave background (CMB) polarization measurements targeting large angular scale signal. Such hardware solutions are used in or planned for…

Cosmology and Nongalactic Astrophysics · Physics 2026-03-20 Ema Tsang-King-Sang , Josquin Errard , Simon Biquard , Pierre Chanial , Wassim Kabalan , Wuhyun Sohn , Radek Stompor

Measurement of Cosmic Microwave Background Polarization Power Spectra from Two Years of BICEP Data

Background Imaging of Cosmic Extragalactic Polarization (BICEP) is a bolometric polarimeter designed to measure the inflationary B-mode polarization of the cosmic microwave background (CMB) at degree angular scales. During three seasons of…

Cosmology and Nongalactic Astrophysics · Physics 2010-02-25 H. C. Chiang , P. A. R. Ade , D. Barkats , J. O. Battle , E. M. Bierman , J. J. Bock , C. D. Dowell , L. Duband , E. F. Hivon , W. L. Holzapfel , V. V. Hristov , W. C. Jones , B. G. Keating , J. M. Kovac , C. L. Kuo , A. E. Lange , E. M. Leitch , P. V. Mason , T. Matsumura , H. T. Nguyen , N. Ponthieu , C. Pryke , S. Richter , G. Rocha , C. Sheehy , Y. D. Takahashi , J. E. Tolan , K. W. Yoon

CMB polarimetry with BICEP: instrument characterization, calibration, and performance

BICEP is a ground-based millimeter-wave bolometric array designed to target the primordial gravity wave signature on the polarization of the cosmic microwave background (CMB) at degree angular scales. Currently in its third year of…

Astrophysics · Physics 2009-11-13 Yuki D. Takahashi , Denis Barkats , John O. Battle , Evan M. Bierman , James J. Bock , H. Cynthia Chiang , C. Darren Dowell , Eric F. Hivon , William L. Holzapfel , Viktor V. Hristov , William C. Jones , J. P. Kaufman , Brian G. Keating , John M. Kovac , Chao-Lin Kuo , Andrew E. Lange , Erik M. Leitch , Peter V. Mason , Tomotake Matsumura , Hien T. Nguyen , Nicolas Ponthieu , Graca M. Rocha , Ki Won Yoon , P. Ade , L. Duband

Detecting the B-mode Polarisation of the CMB with Clover

We describe the objectives, design and predicted performance of Clover, which is a ground-based experiment to measure the faint ``B-mode'' polarisation pattern in the cosmic microwave background (CMB). To achieve this goal, clover will make…

Astrophysics · Physics 2008-06-03 C. E. North , B. R. Johnson , P. A. R. Ade , M. D. Audley , C. Baines , R. A. Battye , M. L. Brown , P. Cabella , P. G. Calisse , A. D. Challinor , W. D. Duncan , P. G. Ferreira , W. K. Gear , D. Glowacka , D. J. Goldie , P. K. Grimes , M. Halpern , V. Haynes , G. C. Hilton , K. D. Irwin , M. E. Jones , A. N. Lasenby , P. J. Leahy , J. Leech , B. Maffei , P. Mauskopf , S. J. Melhuish , D. O'Dea , S. M. Parsley , L. Piccirillo , G. Pisano , C. D. Reintsema , G. Savini , R. Sudiwala , D. Sutton , A. C. Taylor , G. Teleberg , D. Titterington , V. Tsaneva , C. Tucker , R. Watson , S. Withington , G. Yassin , J. Zhang

Separation of foreground and background signals in single frequency measurements of the CMB Polarization

The polarization of the Cosmic Microwave Background (CMB)is a powerful observational tool at hand for modern cosmology. It allows to break the degeneracy of fundamental cosmological parameters one cannot obtain using only anisotropy data…

Astrophysics · Physics 2009-11-07 M. V. Sazhin , G. Sironi , O. S. Khovanskaya

In-Flight Performance of Spider's 280 GHz Receivers

SPIDER is a balloon-borne instrument designed to map the cosmic microwave background at degree-angular scales in the presence of Galactic foregrounds. SPIDER has mapped a large sky area in the Southern Hemisphere using more than 2000…

Instrumentation and Methods for Astrophysics · Physics 2025-08-19 Elle C. Shaw , P. A. R. Ade , S. Akers , M. Amiri , J. Austermann , J. Beall , D. T. Becker , S. J. Benton , A. S. Bergman , J. J. Bock , J. R. Bond , S. A. Bryan , H. C. Chiang , C. R. Contaldi , R. S. Domagalski , O. Doré , S. M. Duff , A. J. Duivenvoorden , H. K. Eriksen , M. Farhang , J. P. Filippini , L. M. Fissel , A. A. Fraisse , K. Freese , M. Galloway , A. E. Gambrel , N. N. Gandilo , K. Ganga , S. M. Gibbs , S. Gourapura , A. Grigorian , R. Gualtieri , J. E. Gudmundsson , M. Halpern , J. Hartley , M. Hasselfield , G. Hilton , W. Holmes , V. V. Hristov , Z. Huang , J. Hubmayr , K. D. Irwin , W. C. Jones , A. Kahn , Z. D. Kermish , C. King , C. L. Kuo , A. R. Lennox , J. S. -Y. Leung , S. Li , T. V. Luu , P. V. Mason , J. May , K. Megerian , L. Moncelsi , T. A. Morford , J. M. Nagy , R. Nie , C. B. Netterfield , M. Nolta , B. Osherson , I. L. Padilla , A. S. Rahlin , S. Redmond , C. Reintsema , L. J. Romualdez , J. E. Ruhl , M. C. Runyan , J. A. Shariff , C. Shiu , J. D. Soler , X. Song , S. Tartakovsky , H. Thommesen , A. Trangsrud , C. Tucker , R. S. Tucker , A. D. Turner , J. Ullom , J. F. van der List , J. Van Lanen , M. R. Vissers , A. C. Weber , I. K. Wehus , S. Wen , D. V. Wiebe , E. Y. Young

Performance of a continuously rotating half-wave plate on the POLARBEAR telescope

A continuously rotating half-wave plate (CRHWP) is a promising tool to improve the sensitivity to large angular scales in cosmic microwave background (CMB) polarization measurements. With a CRHWP, single detectors can measure three of the…

Instrumentation and Methods for Astrophysics · Physics 2017-05-30 Satoru Takakura , Mario Aguilar , Yoshiki Akiba , Kam Arnold , Carlo Baccigalupi , Darcy Barron , Shawn Beckman , David Boettger , Julian Borrill , Scott Chapman , Yuji Chinone , Ari Cukierman , Anne Ducout , Tucker Elleflot , Josquin Errard , Giulio Fabbian , Takuro Fujino , Nicholas Galitzki , Neil Goeckner-Wald , Nils W. Halverson , Masaya Hasegawa , Kaori Hattori , Masashi Hazumi , Charles Hill , Logan Howe , Yuki Inoue , Andrew H. Jaffe , Oliver Jeong , Daisuke Kaneko , Nobuhiko Katayama , Brian Keating , Reijo Keskitalo , Theodore Kisner , Nicoletta Krachmalnicoff , Akito Kusaka , Adrian T. Lee , David Leon , Lindsay Lowry , Frederick Matsuda , Tomotake Matsumura , Martin Navaroli , Haruki Nishino , Hans Paar , Julien Peloton , Davide Poletti , Giuseppe Puglisi , Christian L. Reichardt , Colin Ross , Praween Siritanasak , Aritoki Suzuki , Osamu Tajima , Sayuri Takatori , Grant Teply

Antenna-coupled TES bolometers for the Keck Array, Spider, and Polar-1

Between the BICEP2 and Keck Array experiments, we have deployed over 1500 dual polarized antenna coupled bolometers to map the Cosmic Microwave Background's polarization. We have been able to rapidly deploy these detectors because they are…

Instrumentation and Methods for Astrophysics · Physics 2015-06-11 R. O'Brient , P. A. R. Ade , Z. Ahmed , R. W. Aikin , M. Amiri , S. Benton , C. Bischoff , J. J. Bock , J. A. Bonetti , J. A. Brevik , B. Burger , G. Davis , P. Day , C. D. Dowell , L. Duband , J. P. Filippini , S. Fliescher , S. R. Golwala , J. Grayson , M. Halpern , M. Hasselfield , G. Hilton , V. V. Hristov , H. Hui , K. Irwin , S. Kernasovskiy , J. M. Kovac , C. L. Kuo , E. Leitch , M. Lueker , K. Megerian , L. Moncelsi , C. B. Netterfield , H. T. Nguyen , R. W. Ogburn , C. L. Pryke , C. Reintsema , J. E. Ruhl , M. C. Runyan , R. Schwarz , C. D. Sheehy , Z. Staniszewski , R. Sudiwala , G. Teply , J. E. Tolan , A. D. Turner , R. S. Tucker , A. Vieregg , D. V. Wiebe , P. Wilson , C. L. Wong , W. L. K. Wu , K. W. Yoon

Galactic Synchrotron Foreground and the CMB Polarization Measurements

The polarization of the Cosmic Microwave Background (CMB)is a powerful observational tool at hand for modern cosmology. It allows to break the degeneracy of fundamental cosmological parameters one cannot obtain using only anisotropy data…

Astrophysics · Physics 2007-05-23 M. V. Sazhin , G. Sironi , O. S. Khovanskaya

A Pixel Space Method for Testing Dipole Modulation in the CMB Polarization

We introduce a pixel space method to detect dipole modulation or hemispherical power asymmetry in the cosmic microwave background (CMB) polarization. The method relies on the use of squared total polarized flux whose ensemble average picks…

Cosmology and Nongalactic Astrophysics · Physics 2020-07-15 Shamik Ghosh , Pankaj Jain

The Polatron: A Millimeter-Wave Cosmic Microwave Background Polarimeter for the OVRO 5.5 m Telescope

We describe the development of a bolometric receiver designed to measure the arcminute-scale polarization of the cosmic microwave background (CMB). The Polatron will be mounted at the Cassegrain focus of the 5.5 m telescope at the Owens…

Astrophysics · Physics 2007-05-23 B. J. Philhour , B. G. Keating , P. A. R. Ade , R. S. Bhatia , J. J. Bock , S. E. Church , J. Glenn , J. R. Hinderks , V. V. Hristov , W. C. Jones , M. Kamionkowski , D. E. Kumar , A. E. Lange , J. R. Leong , D. P. Marrone , B. S. Mason , P. V. Mason , M. M. Shuman , G. I. Sirbi

A New Limit on CMB Circular Polarization from SPIDER

We present a new upper limit on CMB circular polarization from the 2015 flight of SPIDER, a balloon-borne telescope designed to search for $B$-mode linear polarization from cosmic inflation. Although the level of circular polarization in…

Cosmology and Nongalactic Astrophysics · Physics 2017-08-14 J. M. Nagy , P. A. R. Ade , M. Amiri , S. J. Benton , A. S. Bergman , R. Bihary , J. J. Bock , J. R. Bond , S. A. Bryan , H. C. Chiang , C. R. Contaldi , O. Dore , A. J. Duivenvoorden , H. K. Eriksen , M. Farhang , J. P. Filippini , L. M. Fissel , A. A. Fraisse , K. Freese , M. Galloway , A. E. Gambrel , N. N. Gandilo , K. Ganga , J. E. Gudmundsson , M. Halpern , J. Hartley , M. Hasselfield , G. Hilton , W. Holmes , V. V. Hristov , Z. Huang , K. D. Irwin , W. C. Jones , C. L. Kuo , Z. D. Kermish , S. Li , P. V. Mason , K. Megerian , L. Moncelsi , T. A. Morford , C. B. Netterfield , M. Nolta , I. L. Padilla , B. Racine , A. S. Rahlin , C. Reintsema , J. E. Ruhl , M. C. Runyan , T. M. Ruud , J. A. Shariff , J. D. Soler , X. Song , A. Trangsrud , C. Tucker , R. S. Tucker , A. D. Turner , J. F. van der List , A. C. Weber , I. K. Wehus , D. V. Wiebe , E. Y. Young

Probing frequency-dependent half-wave plate systematics for CMB experiments with full-sky beam convolution simulations

We study systematic effects from half-wave plates (HWPs) for cosmic microwave background (CMB) experiments using full-sky time-domain beam convolution simulations. Using an optical model for a fiducial spaceborne two-lens refractor…

Cosmology and Nongalactic Astrophysics · Physics 2021-02-17 Adriaan J. Duivenvoorden , Alexandre E. Adler , Matteo Billi , Nadia Dachlythra , Jon E. Gudmundsson

A Polarization Sensitive Bolometric Detector for Observations of the Cosmic Microwave Background

We have developed a bolometric detector that is intrinsically sensitive to linear polarization which is optimized for making measurements of the polarization of the cosmic microwave background radiation. The receiver consists of a pair of…

Astrophysics · Physics 2020-12-22 W. C. Jones , R. S. Bhatia , J. J. Bock , A. E. Lange

An All-Sky Analysis of Polarization in the Microwave Background

Using the formalism of spin-weighted functions we present an all-sky analysis of polarization in the Cosmic Microwave Background (CMB). Linear polarization is a second-rank symmetric and traceless tensor, which can be decomposed on a sphere…

Astrophysics · Physics 2009-10-28 Matias Zaldarriaga , Uros Seljak

Full-sky Models of Galactic Microwave Emission and Polarization at Sub-arcminute Scales for the Python Sky Model

Polarized foreground emission from the Galaxy is one of the biggest challenges facing current and upcoming cosmic microwave background (CMB) polarization experiments. We develop new models of polarized Galactic dust and synchrotron emission…

Cosmology and Nongalactic Astrophysics · Physics 2025-12-24 Experiment Galactic Science Group , Julian Borrill , Susan E. Clark , Jacques Delabrouille , Andrei V. Frolov , Shamik Ghosh , Brandon S. Hensley , Monica D. Hicks , Nicoletta Krachmalnicoff , King Lau , Myra M. Norton , Clement Pryke , Giuseppe Puglisi , Mathieu Remazeilles , Elisa Russier , Benjamin Thorne , Jian Yao , Andrea Zonca