Related papers: Two Year Cosmology Large Angular Scale Surveyor (C…

The Cosmology Large Angular Scale Surveyor Receiver Design

The Cosmology Large Angular Scale Surveyor consists of four instruments performing a CMB polarization survey. Currently, the 40 GHz and first 90 GHz instruments are deployed and observing, with the second 90 GHz and a multichroic 150/220…

Instrumentation and Methods for Astrophysics · Physics 2018-07-25 Jeffrey Iuliano , Joseph Eimer , Lucas Parker , Gary Rhoades , Aamir Ali , John W. Appel , Charles Bennett , Michael Brewer , Ricardo Bustos , David Chuss , Joseph Cleary , Jullianna Couto , Sumit Dahal , Kevin Denis , Rolando Dünner , Thomas Essinger-Hileman , Pedro Fluxa , Mark Halpern , Kathleen Harrington , Kyle Helson , Gene Hilton , Gary Hinshaw , Johannes Hubmayr , John Karakla , Tobias Marriage , Nathan Miller , Jeffrey John McMahon , Carolina Nuñez , Ivan Padilla , Gonzalo Palma , Matthew Petroff , Bastian Pradenas Márquez , Rodrigo Reeves , Carl Reintsema , Karwan Rostem , Deniz Augusto Nunes Valle , Trevor Van Engelhoven , Bingjie Wang , Qinan Wang , Duncan Watts , Jenet Weiland , Edward J. Wollack , Zhilei Xu , Ziang Yan , Lingzhen Zeng

The Cosmology Large Angular Scale Surveyor (CLASS): 40 GHz optical design

The Cosmology Large Angular Scale Surveyor (CLASS) instrument will measure the polarization of the cosmic microwave background at 40, 90, and 150 GHz from Cerro Toco in the Atacama desert of northern Chile. In this paper, we describe the…

Instrumentation and Methods for Astrophysics · Physics 2012-11-02 Joseph R. Eimer , Charles L. Bennett , David T. Chuss , Tobias A. Marriage , Edward J. Wollack , Lingzhen Zeng

Recovery of Large Angular Scale CMB Polarization for Instruments Employing Variable-delay Polarization Modulators

Variable-delay Polarization Modulators (VPMs) are currently being implemented in experiments designed to measure the polarization of the cosmic microwave background on large angular scales because of their capability for providing rapid,…

Instrumentation and Methods for Astrophysics · Physics 2016-02-22 N. J. Miller , D. T. Chuss , T. A. Marriage , E. J. Wollack , J. W. Appel , C. L. Bennett , J. Eimer , T. Essinger-Hileman , D. J. Fixsen , K. Harrington , S. H. Moseley , K. Rostem , E. R. Switzer , D. J. Watts

Large Angular Scale Polarization of the Cosmic Microwave Background and the Feasibility of its Detection

In addition to its spectrum and temperature anisotropy, the 2.7K Cosmic Microwave Background is also expected to exhibit a low level of polarization. The spatial power spectrum of the polarization can provide details about the formation of…

Astrophysics · Physics 2009-10-30 Brian Keating , Peter Timbie , Alexander Polnarev , Julia Steinberger

Control and systems software for the Cosmology Large Angular Scale Surveyor (CLASS)

The Cosmology Large Angular Scale Surveyor (CLASS) is an array of polarization-sensitive millimeter wave telescopes that observes ~70% of the sky at frequency bands centered near 40GHz, 90GHz, 150GHz, and 220GHz from the Atacama desert of…

Instrumentation and Methods for Astrophysics · Physics 2020-12-16 Matthew A. Petroff , John W. Appel , Charles L. Bennett , Michael K. Brewer , Manwei Chan , David T. Chuss , Joseph Cleary , Jullianna Denes Couto , Sumit Dahal , Joseph R. Eimer , Thomas Essinger-Hileman , Pedro Fluxá Rojas , Kathleen Harrington , Jeffrey Iuliano , Tobias A. Marriage , Nathan J. Miller , Deniz Augusto Nunes Valle , Duncan J. Watts , Zhilei Xu

The Cosmology Large Angular Scale Surveyor (CLASS): 38 GHz detector array of bolometric polarimeters

The Cosmology Large Angular Scale Surveyor (CLASS) experiment aims to map the polarization of the Cosmic Microwave Background (CMB) at angular scales larger than a few degrees. Operating from Cerro Toco in the Atacama Desert of Chile, it…

Instrumentation and Methods for Astrophysics · Physics 2015-06-22 John W. Appel , Aamir Ali , Mandana Amiri , Derek Araujo , Charles L. Bennett , Fletcher Boone , Manwei Chan , Hsiao-Mei Cho , David T. Chuss , Felipe Colazo , Erik Crowe , Kevin Denis , Rolando Dunner , Joseph Eimer , Thomas Essinger-Hileman , Dominik Gothe , Mark Halpern , Kathleen Harrington , Gene Hilton , Gary F. Hinshaw , Caroline Huang , Kent Irwin , Glenn Jones , John Karakla , Alan J. Kogut , David Larson , Michele Limon , Lindsay Lowry , Tobias Marriage , Nicholas Mehrle , Amber D. Miller , Nathan Miller , Samuel H. Moseleyb , Giles Novakh , Carl Reintsemad , Karwan Rostemab , Thomas Stevensonb , Deborah Towner , Kongpop U-Yen , Emily Wagner , Duncan Watts , Edward Wollack , Zhilei Xu , Lingzhen Zeng

Degree-Scale CMB Polarization Measurements from Three Years of BICEP1 Data

BICEP1 is a millimeter-wavelength telescope designed specifically to measure the inflationary B-mode polarization of the Cosmic Microwave Background (CMB) at degree angular scales. We present results from an analysis of the data acquired…

Cosmology and Nongalactic Astrophysics · Physics 2015-04-24 BICEP1 Collaboration , D. Barkats , R. Aikin , C. Bischoff , I. Buder , J. P. Kaufman , B. G. Keating , J. M. Kovac , M. Su , P. A. R. Ade , J. O. Battle , E. M. Bierman , J. J. Bock , H. C. Chiang , C. D. Dowell , L. Duband , J. Filippini , E. F. Hivon , W. L. Holzapfel , V. V. Hristov , W. C. Jones , C. L. Kuo , E. M. Leitch , P. V. Mason , T. Matsumura , H. T. Nguyen , N. Ponthieu , C. Pryke , S. Richter , G. Rocha , C. Sheehy , S. S. Kernasovskiy , Y. D. Takahashi , J. E. Tolan , K. W. Yoon

A Measurement of the Degree Scale CMB B-mode Angular Power Spectrum with POLARBEAR

We present a measurement of the $B$-mode polarization power spectrum of the cosmic microwave background (CMB) using taken from July 2014 to December 2016 with the POLARBEAR experiment. The CMB power spectra are measured using observations…

Cosmology and Nongalactic Astrophysics · Physics 2021-01-15 S. Adachi , M. A. O. Aguilar Faúndez , K. Arnold , C. Baccigalupi , D. Barron , D. Beck , S. Beckman , F. Bianchini , D. Boettger , J. Borrill , J. Carron , S. Chapman , K. Cheung , Y. Chinone , K. Crowley , A. Cukierman , M. Dobbs , H. El Bouhargani , T. Elleflot , J. Errard , G. Fabbian , C. Feng , T. Fujino , N. Galitzki , N. Goeckner-Wald , J. Groh , G. Hall , N. Halverson , T. Hamada , M. Hasegawa , M. Hazumi , C. A. Hill , L. Howe , Y. Inoue , G. Jaehnig , O. Jeong , D. Kaneko , N. Katayama , B. Keating , R. Keskitalo , S. Kikuchi , T. Kisner , N. Krachmalnicoff , A. Kusaka , A. T. Lee , D. Leon , E. Linder , L. N. Lowry , A. Mangu , F. Matsuda , Y. Minami , M. Navaroli , H. Nishino , A. T. P. Pham , D. Poletti , G. Puglisi , C. L. Reichardt , Y. Segawa , M. Silva-Feaver , P. Siritanasak , N. Stebor , R. Stompor , A. Suzuki , O. Tajima , S. Takakura , S. Takatori , D. Tanabe , G. P. Teply , C. Tsai , C. Verges , B. Westbrook , Y. Zhou

A Constraint on Primordial $B$-Modes from the First Flight of the SPIDER Balloon-Borne Telescope

We present the first linear polarization measurements from the 2015 long-duration balloon flight of SPIDER, an experiment designed to map the polarization of the cosmic microwave background (CMB) on degree angular scales. Results from these…

Cosmology and Nongalactic Astrophysics · Physics 2021-03-25 SPIDER Collaboration , P. A. R. Ade , M. Amiri , S. J. Benton , A. S. Bergman , R. Bihary , J. J. Bock , J. R. Bond , J. A. Bonetti , S. A. Bryan , H. C. Chiang , C. R. Contaldi , O. Doré , A. J. Duivenvoorden , H. K. Eriksen , M. Farhang , J. P. Filippini , A. A. Fraisse , K. Freese , M. Galloway , A. E. Gambrel , N. N. Gandilo , K. Ganga , R. Gualtieri , J. E. Gudmundsson , M. Halpern , J. Hartley , M. Hasselfield , G. Hilton , W. Holmes , V. V. Hristov , Z. Huang , K. D. Irwin , W. C. Jones , A. Karakci , C. L. Kuo , Z. D. Kermish , J. S. -Y. Leung , S. Li , D. S. Y. Mak , P. V. Mason , K. Megerian , L. Moncelsi , T. A. Morford , J. M. Nagy , C. B. Netterfield , M. Nolta , R. O'Brient , B. Osherson , I. L. Padilla , B. Racine , A. S. Rahlin , C. Reintsema , J. E. Ruhl , M. C. Runyan , T. M. Ruud , J. A. Shariff , E. C. Shaw , C. Shiu , 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 , S. Wen , D. V. Wiebe , E. Y. Young

A New Upper Limit on the Polarization of the Cosmic Microwave Background Radiation

The Cosmic Microwave Background Radiation (CMB) is an invaluable probe of the conditions of the early universe. Recent measurements of its spatial anisotropy have allowed accurate determinations of several fundamental cosmological…

Astrophysics · Physics 2009-09-29 Christopher O'Dell

CMB Polarization Measurements

The polarization of the Cosmic Microwave Background (CMB) radiation carries essential information on early stages of the Universe such as the cosmic inflation, forming cosmological structures through gravitational lensing, and the epoch of…

Cosmology and Nongalactic Astrophysics · Physics 2024-02-22 E. Carretti , C. Baccigalupi

A Measurement of the Cosmic Microwave Background $B$-Mode Polarization Power Spectrum at Sub-Degree Scales from 2 years of POLARBEAR Data

We report an improved measurement of the cosmic microwave background (CMB) $B$-mode polarization power spectrum with the POLARBEAR experiment at 150 GHz. By adding new data collected during the second season of observations (2013-2014) to…

Cosmology and Nongalactic Astrophysics · Physics 2017-10-31 The POLARBEAR Collaboration , P. A. R. Ade , M. Aguilar , Y. Akiba , K. Arnold , C. Baccigalupi , D. Barron , D. Beck , F. Bianchini , D. Boettger , J. Borrill , S. Chapman , Y. Chinone , K. Crowley , A. Cukierman , M. Dobbs , A. Ducout , R. Dünner , T. Elleflot , J. Errard , G. Fabbian , S. M. Feeney , C. Feng , T. Fujino , N. Galitzki , A. Gilbert , N. Goeckner-Wald , J. Groh , T. Hamada , G. Hall , N. W. Halverson , M. Hasegawa , M. Hazumi , C. Hill , L. Howe , Y. Inoue , G. C. Jaehnig , A. H. Jaffe , O. Jeong , D. Kaneko , N. Katayama , B. Keating , R. Keskitalo , T. Kisner , N. Krachmalnicoff , A. Kusaka , M. Le Jeune , A. T. Lee , E. M. Leitch , D. Leon , E. Linder , L. Lowry , F. Matsuda , T. Matsumura , Y. Minami , J. Montgomery , M. Navaroli , H. Nishino , H. Paar , J. Peloton , A. T. P. Pham , D. Poletti , G. Puglisi , C. L. Reichardt , P. L. Richards , C. Ross , Y. Segawa , B. D. Sherwin , M. Silva-Feaver , P. Siritanasak , N. Stebor , R. Stompor , A. Suzuki , O. Tajima , S. Takakura , S. Takatori , D. Tanabe , G. P. Teply , T. Tomaru , C. Tucker , N. Whitehorn , A. Zahn

The large scale polarization explorer (LSPE) for CMB measurements: performance forecast

[Abridged] The measurement of the polarization of the Cosmic Microwave Background radiation is one of the current frontiers in cosmology. In particular, the detection of the primordial B-modes, could reveal the presence of gravitational…

Instrumentation and Methods for Astrophysics · Physics 2021-08-10 The LSPE collaboration , G. Addamo , P. A. R. Ade , C. Baccigalupi , A. M. Baldini , P. M. Battaglia , E. S. Battistelli , A. Baù , P. de Bernardis , M. Bersanelli , M. Biasotti , A. Boscaleri , B. Caccianiga , S. Caprioli , F. Cavaliere , F. Cei , K. A. Cleary , F. Columbro , G. Coppi , A. Coppolecchia , F. Cuttaia , G. D'Alessandro , G. De Gasperis , M. De Petris , V. Fafone , F. Farsian , L. Ferrari Barusso , F. Fontanelli , C. Franceschet , T. C. Gaier , L. Galli , F. Gatti , R. Genova-Santos , M. Gerbino , M. Gervasi , T. Ghigna , D. Grosso , A. Gruppuso , R. Gualtieri , F. Incardona , M. E. Jones , P. Kangaslahti , N. Krachmalnicoff , L. Lamagna , M. Lattanzi , C. H. López-Caraballo , M. Lumia , R. Mainini , D. Maino , S. Mandelli , M. Maris , S. Masi , S. Matarrese , A. May , L. Mele , P. Mena , A. Mennella , R. Molina , D. Molinari , G. Morgante , U. Natale , F. Nati , P. Natoli , L. Pagano , A. Paiella , F. Panico , F. Paonessa , S. Paradiso , A. Passerini , M. Perez-de-Taoro , O. A. Peverini , F. Piacentini , L. Piccirillo , G. Pisano , D. Poletti , G. Presta , S. Realini , N. Reyes , J. A. Rubino-Martin , M. Sandri , S. Sartor , F. Pezzotta , G. Polenta , A. Rocchi , A. Schillaci , G. Signorelli , B. Siri , M. Soria , F. Spinella , V. Tapia , A. Tartari , A. C. Taylor , L. Terenzi , M. Tomasi , E. Tommasi , C. Tucker , D. Vaccaro , D. M. Vigano , F. Villa , G. Virone , N. Vittorio , A. Volpe , R. E. J. Watkins , A. Zacchei , M. Zannoni

Modulation of CMB polarization with a warm rapidly-rotating half-wave plate on the Atacama B-Mode Search (ABS) instrument

We evaluate the modulation of Cosmic Microwave Background (CMB) polarization using a rapidly-rotating, half-wave plate (HWP) on the Atacama B-Mode Search (ABS). After demodulating the time-ordered-data (TOD), we find a significant reduction…

Instrumentation and Methods for Astrophysics · Physics 2014-02-18 A. Kusaka , T. Essinger-Hileman , J. W. Appel , P. Gallardo , K. D. Irwin , N. Jarosik , M. R. Nolta , L. A. Page , L. P. Parker , S. Raghunathan , J. L. Sievers , S. M. Simon , S. T. Staggs , K. Visnjic

The CLASS 150/220 GHz Polarimeter Array: Design, Assembly, and Characterization

We report on the development of a polarization-sensitive dichroic (150/220 GHz) detector array for the Cosmology Large Angular Scale Surveyor (CLASS) delivered to the telescope site in June 2019. In concert with existing 40 and 90 GHz…

Instrumentation and Methods for Astrophysics · Physics 2020-01-20 Sumit Dahal , Mandana Amiri , John W. Appel , Charles L. Bennett , Lance Corbett , Rahul Datta , Kevin Denis , Thomas Essinger-Hileman , Mark Halpern , Kyle Helson , Gene Hilton , Johannes Hubmayr , Benjamin Keller , Tobias Marriage , Carolina Nunez , Matthew Petroff , Carl Reintsema , Karwan Rostem , Kongpop U-Yen , Edward Wollack

COMPASS: An Upper Limit on CMB Polarization at an Angular Scale of 20 arc minutes

COMPASS is an on-axis 2.6 meter telescope coupled to a correlation polarimeter operating at a wavelength of 1 cm. The entire instrument was built specifically for CMB polarization studies. We report here on observations of February 2001 -…

Astrophysics · Physics 2009-11-10 Philip C. Farese , Giorgio Dall'Oglio , Joshua O. Gundersen , Brian G. Keating , Slade Klawikowski , Lloyd Knox , Alan Levy , Philip M. Lubin , Chris W. O'Dell , Alan Peel , Lucio Piccirillo , John Ruhl , Peter T. Timbie

CLASS Observations of Atmospheric Cloud Polarization at Millimeter Wavelengths

The dynamic atmosphere imposes challenges to ground-based cosmic microwave background observation, especially for measurements on large angular scales. The hydrometeors in the atmosphere, mostly in the form of clouds, scatter the ambient…

Instrumentation and Methods for Astrophysics · Physics 2023-09-15 Yunyang Li , John W. Appel , Charles L. Bennett , Ricardo Bustos , David T. Chuss , Joseph Cleary , Jullianna Denes Couto , Sumit Dahal , Rahul Datta , Rolando Dünner , Joseph R. Eimer , Thomas Essinger-Hileman , Kathleen Harrington , Jeffrey Iuliano , Tobias A. Marriage , Matthew A. Petroff , Rodrigo A. Reeves , Karwan Rostem , Rui Shi , Deniz A. N. Valle , Duncan J. Watts , Oliver F. Wolff , Edward J. Wollack , Zhilei Xu

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

The Atacama Cosmology Telescope: A Measurement of the Cosmic Microwave Background Power Spectra at 98 and 150 GHz

We present the temperature and polarization angular power spectra of the CMB measured by the Atacama Cosmology Telescope (ACT) from 5400 deg$^2$ of the 2013-2016 survey, which covers $>$15000 deg$^2$ at 98 and 150 GHz. For this analysis we…

Cosmology and Nongalactic Astrophysics · Physics 2021-11-18 Steve K. Choi , Matthew Hasselfield , Shuay-Pwu Patty Ho , Brian Koopman , Marius Lungu , Maximilian H. Abitbol , Graeme E. Addison , Peter A. R. Ade , Simone Aiola , David Alonso , Mandana Amiri , Stefania Amodeo , Elio Angile , Jason E. Austermann , Taylor Baildon , Nick Battaglia , James A. Beall , Rachel Bean , Daniel T. Becker , J Richard Bond , Sarah Marie Bruno , Erminia Calabrese , Victoria Calafut , Luis E. Campusano , Felipe Carrero , Grace E. Chesmore , Hsiao-mei Cho , Susan E. Clark , Nicholas F. Cothard , Devin Crichton , Kevin T. Crowley , Omar Darwish , Rahul Datta , Edward V. Denison , Mark J. Devlin , Cody J. Duell , Shannon M. Duff , Adriaan J. Duivenvoorden , Jo Dunkley , Rolando Dünner , Thomas Essinger-Hileman , Max Fankhanel , Simone Ferraro , Anna E. Fox , Brittany Fuzia , Patricio A. Gallardo , Vera Gluscevic , Joseph E. Golec , Emily Grace , Megan Gralla , Yilun Guan , Kirsten Hall , Mark Halpern , Dongwon Han , Peter Hargrave , Shawn Henderson , Brandon Hensley , J. Colin Hill , Gene C. Hilton , Matt Hilton , Adam D. Hincks , Renée Hložek , Johannes Hubmayr , Kevin M. Huffenberger , John P. Hughes , Leopoldo Infante , Kent Irwin , Rebecca Jackson , Jeff Klein , Kenda Knowles , Arthur Kosowsky , Victoria Lakey , Dale Li , Yaqiong Li , Zack Li , Martine Lokken , Thibaut Louis , Amanda MacInnis , Mathew Madhavacheril , Felipe Maldonado , Maya Mallaby-Kay , Danica Marsden , Loïc Maurin , Jeff McMahon , Felipe Menanteau , Kavilan Moodley , Tim Morton , Sigurd Naess , Toshiya Namikawa , Federico Nati , Laura Newburgh , John P. Nibarger , Andrina Nicola , Michael D. Niemack , Michael R. Nolta , John Orlowski-Sherer , Lyman A. Page , Christine G. Pappas , Bruce Partridge , Phumlani Phakathi , Heather Prince , Roberto Puddu , Frank J. Qu , Jesus Rivera , Naomi Robertson , Felipe Rojas , Maria Salatino , Emmanuel Schaan , Alessandro Schillaci , Benjamin L. Schmitt , Neelima Sehgal , Blake D. Sherwin , Carlos Sierra , Jon Sievers , Cristobal Sifon , Precious Sikhosana , Sara Simon , David N. Spergel , Suzanne T. Staggs , Jason Stevens , Emilie Storer , Dhaneshwar D. Sunder , Eric R. Switzer , Ben Thorne , Robert Thornton , Hy Trac , Jesse Treu , Carole Tucker , Leila R. Vale , Alexander Van Engelen , Jeff Van Lanen , Eve M. Vavagiakis , Kasey Wagoner , Yuhan Wang , Jonathan T. Ward , Edward J. Wollack , Zhilei Xu , Fernando Zago , Ningfeng Zhu

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