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The Advanced ACTPol (AdvACT) upgrade to the Atacama Cosmology Telescope (ACT)features arrays of aluminum manganese transition-edge sensors (TESes) optimizedfor ground-based observations of the Cosmic Microwave Background (CMB). Arraytesting shows highly responsive detectors with anticipated in-band noiseperformance under optical loading. We report on TES parameters measured withimpedance data taken on a subset of TESes. We then compare modeled noisespectral densities to measurements. We find excess noise at frequencies around100 Hz, nearly outside of the signal band of CMB measurements. In addition, wedescribe full-array noise measurements in the laboratory and in the field fortwo new AdvACT mid-frequency arrays, sensitive at bands centered on 90 and 150GHz, and data for the high-frequency array (150/230 GHz) as deployed.

Advanced ACTPol TES Device Parameters and Noise Performance in Fielded Arrays