POLARBEAR-2: an instrument for CMB polarization measurements

Abstract

POLARBEAR-2 (PB-2) is a cosmic microwave background (CMB) polarization experiment that will be located in the Atacama highland in Chile at an altitude of 5200 m. Its science goals are to measure the CMB polarization signals originating from both primordial gravitational waves and weak lensing. PB-2 is designed to measure the tensor to scalar ratio, r, with precision σ(r) < 0.01, and the sum of neutrino masses, Σmν, with σ(Σmν) < 90 meV. To achieve these goals, PB-2 will employ 7588 transition-edge sensor bolometers at 95 GHz and 150 GHz, which will be operated at the base temperature of 250 mK. Science observations will begin in 2017.

9pages,8figures

References in corpus (3)

• BICEP3: a 95 GHz refracting telescope for degree-scale CMB polarization
• Design and development of an ambient-temperature continuously-rotating achromatic half-wave plate for CMB polarization modulation on the POLARBEAR-2 experiment
• Digital frequency domain multiplexing readout electronics for the next generation of millimeter telescopes

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• Systematic effects induced by Half Wave Plate precession into Cosmic Microwave Background polarization measurements
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