The POLARBEAR-2 and the Simons Array Experiment
Creators: name: Suzuki, A.
name: Ade, P.
name: Akiba, Y.
name: Aleman, C.
name: Arnold, K.
name: Baccigalupi, C.
name: Barch, B.
name: Barron, D.
name: Bender, A.
name: Boettger, D.
name: Borrill, J.
name: Chapman, S.
name: Chinone, Y.
name: Cukierman, A.
name: Dobbs, M.
name: Ducout, A.
name: Dunner, R.
name: Elleflot, T.
name: Errard, J.
name: Fabbian, G.
name: Feeney, S.
name: Feng, C.
name: Fujino, T.
name: Fuller, G.
name: Gilbert, A.
name: Goeckner-Wald, N.
name: Groh, J.
name: De Haan, T.
name: Hall, G.
name: Halverson, N.
name: Hamada, T.
name: Hasegawa, M.
name: Hattori, K.
name: Hazumi, M.
name: Hill, C.
name: Holzapfel, W.
name: Hori, Y.
name: Howe, L.
name: Inoue, Y.
name: Irie, F.
name: Jaehnig, G.
name: Jaffe, A.
name: Jeong, O.
name: Katayama, N.
name: Kaufman, J.
name: Kazemzadeh, K.
name: Keating, B.
name: Kermish, Z.
name: Keskitalo, R.
name: Kisner, T.
name: Kusaka, A.
name: Jeune, M. Le
name: Lee, A.
name: Leon, D.
name: Linder, E.
name: Lowry, L.
name: Matsuda, F.
name: Matsumura, T.
name: Miller, N.
name: Mizukami, K.
name: Montgomery, J.
name: Navaroli, M.
name: Nishino, H.
name: Peloton, J.
name: Poletti, D.
name: Rebeiz, G.
name: Raum, C.
name: Reichardt, C.
name: Richards, P.
name: Ross, C.
name: Rotermund, K.
name: Segawa, Y.
name: Sherwin, B.
name: Shirley, I.
name: Siritanasak, P.
name: Stebor, N.
name: Stompor, R.
name: Suzuki, J.
name: Tajima, O.
name: Takada, S.
name: Takakura, S.
name: Takatori, S.
name: Tikhomirov, A.
name: Tomaru, T.
name: Westbrook, B.
name: Whitehorn, N.
name: Yamashita, T.
name: Zahn, A.
name: Zahn, O.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences
subject: FOS: Physical sciences

description: We present an overview of the design and status of the \Pb-2 and the Simons Array experiments. \Pb-2 is a Cosmic Microwave Background polarimetry experiment which aims to characterize the arc-minute angular scale B-mode signal from weak gravitational lensing and search for the degree angular scale B-mode signal from inflationary gravitational waves. The receiver has a 365~mm diameter focal plane cooled to 270~milli-Kelvin. The focal plane is filled with 7,588 dichroic lenslet-antenna coupled polarization sensitive Transition Edge Sensor (TES) bolometric pixels that are sensitive to 95~GHz and 150~GHz bands simultaneously. The TES bolometers are read-out by SQUIDs with 40 channel frequency domain multiplexing. Refractive optical elements are made with high purity alumina to achieve high optical throughput. The receiver is designed to achieve noise equivalent temperature of 5.8~$μ$K$_{CMB}\sqrt{s}$ in each frequency band. \Pb-2 will deploy in 2016 in the Atacama desert in Chile. The Simons Array is a project to further increase sensitivity by deploying three \Pb-2 type receivers. The Simons Array will cover 95~GHz, 150~GHz and 220~GHz frequency bands for foreground control. The Simons Array will be able to constrain tensor-to-scalar ratio and sum of neutrino masses to $σ(r) = 6\times 10^{-3}$ at $r = 0.1$ and $\sum m_ν(σ=1)$ to 40 meV.
description: Accepted to Journal of Low Temperature Physics LTD16 Special Issue, Low Temperature Detector 16 Conference Proceedings, 5 pages, 1 figure