The POLARBEAR-2 experiment

Takayuki Tomaru; Masashi Hazumi; Adrian T. Lee; Peter Ade; Kam Arnold; Darcy Barron; Julian Borrill; Scott Chapman; Yuji Chinone; Matt Dobbs; Josquin Errard; Giullo Fabbian; Adnan Ghribi; William Grainger; Nils Halverson; Masaya Hasegawa; Kaori Hattori; William L. Holzapfel; Yuki Inoue; Sou Ishii; Yuta Kaneko; Brian Keating; Zigmund Kermish; Nobuhiro Kimura; Ted Kisner; William Kranz; Frederick Matsuda; Tomotake Matsumura; Hideki Morii; Michael J. Myers; Haruki Nishino; Takahiro Okamura; Erin Quealy; Christian L. Reichardt; Paul L. Richards; Darin Rosen; Colin Ross; Akie Shimizu; Michael Sholl; Praween Siritanasak; Peter Smith; Nathan Stebor; Radek Stompor; Aritoki Suzuki; Jun Ichi Suzuki; Suguru Takada; Ken Ichi Tanaka; Oliver Zahn

doi:10.1117/12.926158

The POLARBEAR-2 experiment

Takayuki Tomaru, Masashi Hazumi, Adrian T. Lee, Peter Ade, Kam Arnold, Darcy Barron, Julian Borrill, Scott Chapman, Yuji Chinone, Matt Dobbs, Josquin Errard, Giullo Fabbian, Adnan Ghribi, William Grainger, Nils Halverson, Masaya Hasegawa, Kaori Hattori, William L. Holzapfel, Yuki Inoue, Sou IshiiYuta Kaneko, Brian Keating, Zigmund Kermish, Nobuhiro Kimura, Ted Kisner, William Kranz, Frederick Matsuda, Tomotake Matsumura, Hideki Morii, Michael J. Myers, Haruki Nishino, Takahiro Okamura, Erin Quealy, Christian L. Reichardt, Paul L. Richards, Darin Rosen, Colin Ross, Akie Shimizu, Michael Sholl, Praween Siritanasak, Peter Smith, Nathan Stebor, Radek Stompor, Aritoki Suzuki, Jun Ichi Suzuki, Suguru Takada, Ken Ichi Tanaka, Oliver Zahn

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

22 Scopus citations

Abstract

POLARBEAR-2 (PB-2) is a cosmic microwave background (CMB) polarization experiment observing at Atacama plateau in Chile. PB-2 is designed to improve the sensitivity to measure the CMB B-mode polarization by upgrading the current POLARBEAR-1 receiver that is currently mounted on the Huan Tran telescope. The improvements in PB-2 include, i) the dual band observations at 95 GHz and 150 GHz in each pixel using an sinuous antenna, ii) the increase of the total number of detectors, 7588 Al-Ti bilayer transition-edge sensor (TES) bolometers, iii) the bath temperature of bolometers at 100mK in the second phase of observation (300mK in the first phase.) With the expected sensitivity of 5.7 μK √s, PB-2 is sensitive to a tensor-to-scalar ratio, r, of 0.01 at 95% confidence level (CL) and constrains the sum of neutrino masses as 90meV by PB-2 alone and 40meV by combining PB-2 and Planck at 68% CL. We schedule to deploy in 2014.

Original language	English
Title of host publication	Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy VI
DOIs	https://doi.org/10.1117/12.926158
State	Published - 2012
Event	Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy VI - Amsterdam, Netherlands Duration: 3 Jul 2012 → 6 Jul 2012

Publication series

Name	Proceedings of SPIE - The International Society for Optical Engineering
Volume	8452
ISSN (Print)	0277-786X

Conference

Conference	Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy VI
Country/Territory	Netherlands
City	Amsterdam
Period	3/07/12 → 6/07/12

Keywords

B-mode
Bolometer
Cosmic microwave background
Gravitational lensing
Gravitational wave
Neutrino mass
Polarization

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10.1117/12.926158

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Tomaru, T., Hazumi, M., Lee, A. T., Ade, P., Arnold, K., Barron, D., Borrill, J., Chapman, S., Chinone, Y., Dobbs, M., Errard, J., Fabbian, G., Ghribi, A., Grainger, W., Halverson, N., Hasegawa, M., Hattori, K., Holzapfel, W. L., Inoue, Y., ... Zahn, O. (2012). The POLARBEAR-2 experiment. In Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy VI Article 84521H (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 8452). https://doi.org/10.1117/12.926158

@inproceedings{cc7886555a4e4eff9b5dd058f6ff038f,

title = "The POLARBEAR-2 experiment",

abstract = "POLARBEAR-2 (PB-2) is a cosmic microwave background (CMB) polarization experiment observing at Atacama plateau in Chile. PB-2 is designed to improve the sensitivity to measure the CMB B-mode polarization by upgrading the current POLARBEAR-1 receiver that is currently mounted on the Huan Tran telescope. The improvements in PB-2 include, i) the dual band observations at 95 GHz and 150 GHz in each pixel using an sinuous antenna, ii) the increase of the total number of detectors, 7588 Al-Ti bilayer transition-edge sensor (TES) bolometers, iii) the bath temperature of bolometers at 100mK in the second phase of observation (300mK in the first phase.) With the expected sensitivity of 5.7 μK √s, PB-2 is sensitive to a tensor-to-scalar ratio, r, of 0.01 at 95% confidence level (CL) and constrains the sum of neutrino masses as 90meV by PB-2 alone and 40meV by combining PB-2 and Planck at 68% CL. We schedule to deploy in 2014.",

keywords = "B-mode, Bolometer, Cosmic microwave background, Gravitational lensing, Gravitational wave, Neutrino mass, Polarization",

author = "Takayuki Tomaru and Masashi Hazumi and Lee, {Adrian T.} and Peter Ade and Kam Arnold and Darcy Barron and Julian Borrill and Scott Chapman and Yuji Chinone and Matt Dobbs and Josquin Errard and Giullo Fabbian and Adnan Ghribi and William Grainger and Nils Halverson and Masaya Hasegawa and Kaori Hattori and Holzapfel, {William L.} and Yuki Inoue and Sou Ishii and Yuta Kaneko and Brian Keating and Zigmund Kermish and Nobuhiro Kimura and Ted Kisner and William Kranz and Frederick Matsuda and Tomotake Matsumura and Hideki Morii and Myers, {Michael J.} and Haruki Nishino and Takahiro Okamura and Erin Quealy and Reichardt, {Christian L.} and Richards, {Paul L.} and Darin Rosen and Colin Ross and Akie Shimizu and Michael Sholl and Praween Siritanasak and Peter Smith and Nathan Stebor and Radek Stompor and Aritoki Suzuki and Suzuki, {Jun Ichi} and Suguru Takada and Tanaka, {Ken Ichi} and Oliver Zahn",

year = "2012",

doi = "10.1117/12.926158",

language = "???core.languages.en_GB???",

isbn = "9780819491534",

series = "Proceedings of SPIE - The International Society for Optical Engineering",

booktitle = "Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy VI",

note = "Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy VI ; Conference date: 03-07-2012 Through 06-07-2012",

}

Tomaru, T, Hazumi, M, Lee, AT, Ade, P, Arnold, K, Barron, D, Borrill, J, Chapman, S, Chinone, Y, Dobbs, M, Errard, J, Fabbian, G, Ghribi, A, Grainger, W, Halverson, N, Hasegawa, M, Hattori, K, Holzapfel, WL, Inoue, Y, Ishii, S, Kaneko, Y, Keating, B, Kermish, Z, Kimura, N, Kisner, T, Kranz, W, Matsuda, F, Matsumura, T, Morii, H, Myers, MJ, Nishino, H, Okamura, T, Quealy, E, Reichardt, CL, Richards, PL, Rosen, D, Ross, C, Shimizu, A, Sholl, M, Siritanasak, P, Smith, P, Stebor, N, Stompor, R, Suzuki, A, Suzuki, JI, Takada, S, Tanaka, KI & Zahn, O 2012, The POLARBEAR-2 experiment. in Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy VI., 84521H, Proceedings of SPIE - The International Society for Optical Engineering, vol. 8452, Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy VI, Amsterdam, Netherlands, 3/07/12. https://doi.org/10.1117/12.926158

The POLARBEAR-2 experiment. / Tomaru, Takayuki; Hazumi, Masashi; Lee, Adrian T. et al.
Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy VI. 2012. 84521H (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 8452).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

TY - GEN

T1 - The POLARBEAR-2 experiment

AU - Tomaru, Takayuki

AU - Hazumi, Masashi

AU - Lee, Adrian T.

AU - Ade, Peter

AU - Arnold, Kam

AU - Barron, Darcy

AU - Borrill, Julian

AU - Chapman, Scott

AU - Chinone, Yuji

AU - Dobbs, Matt

AU - Errard, Josquin

AU - Fabbian, Giullo

AU - Ghribi, Adnan

AU - Grainger, William

AU - Halverson, Nils

AU - Hasegawa, Masaya

AU - Hattori, Kaori

AU - Holzapfel, William L.

AU - Inoue, Yuki

AU - Ishii, Sou

AU - Kaneko, Yuta

AU - Keating, Brian

AU - Kermish, Zigmund

AU - Kimura, Nobuhiro

AU - Kisner, Ted

AU - Kranz, William

AU - Matsuda, Frederick

AU - Matsumura, Tomotake

AU - Morii, Hideki

AU - Myers, Michael J.

AU - Nishino, Haruki

AU - Okamura, Takahiro

AU - Quealy, Erin

AU - Reichardt, Christian L.

AU - Richards, Paul L.

AU - Rosen, Darin

AU - Ross, Colin

AU - Shimizu, Akie

AU - Sholl, Michael

AU - Siritanasak, Praween

AU - Smith, Peter

AU - Stebor, Nathan

AU - Stompor, Radek

AU - Suzuki, Aritoki

AU - Suzuki, Jun Ichi

AU - Takada, Suguru

AU - Tanaka, Ken Ichi

AU - Zahn, Oliver

PY - 2012

Y1 - 2012

N2 - POLARBEAR-2 (PB-2) is a cosmic microwave background (CMB) polarization experiment observing at Atacama plateau in Chile. PB-2 is designed to improve the sensitivity to measure the CMB B-mode polarization by upgrading the current POLARBEAR-1 receiver that is currently mounted on the Huan Tran telescope. The improvements in PB-2 include, i) the dual band observations at 95 GHz and 150 GHz in each pixel using an sinuous antenna, ii) the increase of the total number of detectors, 7588 Al-Ti bilayer transition-edge sensor (TES) bolometers, iii) the bath temperature of bolometers at 100mK in the second phase of observation (300mK in the first phase.) With the expected sensitivity of 5.7 μK √s, PB-2 is sensitive to a tensor-to-scalar ratio, r, of 0.01 at 95% confidence level (CL) and constrains the sum of neutrino masses as 90meV by PB-2 alone and 40meV by combining PB-2 and Planck at 68% CL. We schedule to deploy in 2014.

AB - POLARBEAR-2 (PB-2) is a cosmic microwave background (CMB) polarization experiment observing at Atacama plateau in Chile. PB-2 is designed to improve the sensitivity to measure the CMB B-mode polarization by upgrading the current POLARBEAR-1 receiver that is currently mounted on the Huan Tran telescope. The improvements in PB-2 include, i) the dual band observations at 95 GHz and 150 GHz in each pixel using an sinuous antenna, ii) the increase of the total number of detectors, 7588 Al-Ti bilayer transition-edge sensor (TES) bolometers, iii) the bath temperature of bolometers at 100mK in the second phase of observation (300mK in the first phase.) With the expected sensitivity of 5.7 μK √s, PB-2 is sensitive to a tensor-to-scalar ratio, r, of 0.01 at 95% confidence level (CL) and constrains the sum of neutrino masses as 90meV by PB-2 alone and 40meV by combining PB-2 and Planck at 68% CL. We schedule to deploy in 2014.

KW - B-mode

KW - Bolometer

KW - Cosmic microwave background

KW - Gravitational lensing

KW - Gravitational wave

KW - Neutrino mass

KW - Polarization

UR - http://www.scopus.com/inward/record.url?scp=84872083619&partnerID=8YFLogxK

U2 - 10.1117/12.926158

DO - 10.1117/12.926158

M3 - 會議論文篇章

AN - SCOPUS:84872083619

SN - 9780819491534

T3 - Proceedings of SPIE - The International Society for Optical Engineering

BT - Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy VI

T2 - Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy VI

Y2 - 3 July 2012 through 6 July 2012

ER -

The POLARBEAR-2 experiment

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Keywords

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