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 sigma(r) < 0.01, and the sum of neutrino masses, Sigma m(nu), with sigma(Sigma m(nu)) < 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.
Inoue, Y., Ade, P., Akiba, Y., Aleman, C., Arnold, K., Baccigalupi, C., et al. (2016). POLARBEAR-2: an instrument for CMB polarization measurements. In Millimeter, submillimeter, and far-infrared detectors and instrumentation for astronomy VIII: SPIE Aastronomical telescopes + instrumentation, 2016, Edinburgh, United Kingdom. SPIE [10.1117/12.2231961].
POLARBEAR-2: an instrument for CMB polarization measurements
Puglisi G.;
2016-01-01
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 sigma(r) < 0.01, and the sum of neutrino masses, Sigma m(nu), with sigma(Sigma m(nu)) < 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.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
