Impedance measurements and modeling of a transition-edge-sensor calorimeter

  title={Impedance measurements and modeling of a transition-edge-sensor calorimeter},
  author={Mark A. Lindeman and S. R. Bandler and Regis P. Brekosky and James A Chervenak and E. Figueroa-Feliciano and Fred M. Finkbeiner and Mary J. Li and Caroline A. Kilbourne},
  journal={Review of Scientific Instruments},
We describe a method for measuring the complex impedance of transition-edge-sensor (TES) calorimeters. Using this technique, we measured the impedance of a Mo/Au superconducting transition-edge-sensor calorimeter. The impedance data are in good agreement with our linear calorimeter model. From these measurements, we obtained measurements of unprecedented accuracy of the heat capacity and the gradient of resistance with respect to temperature and current of a TES calorimeter throughout the phase… 

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