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An Analytical Model for Pulse Shape and Electrothermal Stability in Two-Body Microcalorimeters



Douglas A. Bennett, Robert D. Horansky, Daniel R. Schmidt, Daniel S. Swetz, Leila R. Vale, Joel N. Ullom, Andrew Hoover, Michael W. Rabin, Nathan J. Hoteling


High resolution superconducting gamma-ray sensors show potential for the more accurate analysis of nuclear material. These devices are part of a larger class of microcalorimeters and bolometers based on transition edge sensors (TESs) that have two distinct thermal bodies. We derive the time domain behavior of the current and temperature for compound TES devices in the small signal limit and demonstrate the utility of these equations for device design and characterization. In particular, we demonstrate how critical damping and electrothermal stability can be predicted.
Applied Physics Letters


microcalorimeter, transistion-edge sensor, gamma-ray spectrometer


Bennett, D. , Horansky, R. , Schmidt, D. , Swetz, D. , Vale, L. , Ullom, J. , Hoover, A. , Rabin, M. and Hoteling, N. (2010), An Analytical Model for Pulse Shape and Electrothermal Stability in Two-Body Microcalorimeters, Applied Physics Letters, [online], (Accessed April 20, 2024)
Created September 9, 2010, Updated June 2, 2021