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Stability of Al-MN transition edge sensors for frequency domain multiplexing



Johannes Hubmayr


We are developing arrays of 150~GHz transition edge sensor (TES) polarimeters for the South Pole Telescope polarimeter (SPTpol). Proto-type devices use an aluminum manganese (Al-Mn) alloy TES with a normal resistance $R_n$ suited to frequency domain multiplexing (fMUX) used in SPTpol. We present the test pixel design and show measurements using fMUX readout. The devices exhibit noise performance consistent with expectations when operated high in the transition. Below 0.8$R_n$, the detectors become unstable, which is predicted using a compound TES model.
Proceedings Title
IEEE Transactions on Applied Superconductivity
Conference Dates
August 2-6, 2010
Conference Location
Washington DC, DC
Conference Title
Applied Superconductivity Conference


TES, multiplexing


Hubmayr, J. (2010), Stability of Al-MN transition edge sensors for frequency domain multiplexing, IEEE Transactions on Applied Superconductivity , Washington DC, DC, [online], (Accessed June 15, 2024)


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Created December 3, 2010, Updated November 10, 2018