The LSPE-STRIP instrument for microwave polarization studies from the Canary Islands

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In this talk, I will present the current status of the LSPE-STRIP experiment that will operate at the Observatorio del Teide. This is one of the two instruments of the Large Scale Polarization Explorer (LSPE) collaboration, which is a project devoted to the measurement of the CMB polarization (aiming a tensor-to-scalar ratio of r = 0.03 with 99.7% confidence level) at five frequency bands from 45GHz up to 240GHz. The second LSPE instrument is SWIPE (Short-Wavelength Instrument for the Polarization Explorer), designed to fly on a winter arctic stratospheric long-duration balloon.

STRIP will observe approximately 25% of the Northern sky using an array of 49 coherent polarimeters at 43 GHz, coupled to a 1.5m fully rotating crossed-Dragone telescope, similar to the QUIJOTE telescopes. A second frequency channel with six-elements at 95 GHz will be exploited as an atmospheric monitor. Here I will present the current status of the project, and will discuss some laboratory tests with the polarimeters.
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