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Strategic Astrophysics Technology

High Efficiency Feedhorn-Coupled TES-based Detectors for CMB Polarization Measurements

Completed Technology Project
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Project Description

High Efficiency Feedhorn-Coupled TES-based Detectors for CMB Polarization Measurements

The development of large format focal planes of sensitive detectors that have excellent systematic control is essential for future space-borne measurements of the cosmic microwave background that will search for evidence of inflation. We have developed and demonstrated detectors that utilize a unique combination of a highly symmetric electromagnetic design and a single-crystal silicon material system that results in high transmission efficiency, the required sensitivity, and low cross-polarization response. We propose a two year technology maturation effort that will focus on implementing these detectors in large focal planes that are compatible with the space environment.

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