TY - JOUR
T1 - Determination of complex microcalorimeter parameters with impedance measurements
AU - Saab, T.
AU - Bandler, S. R.
AU - Chervenak, J.
AU - Figueroa-Feliciano, E.
AU - Finkbeiner, F.
AU - Iyomoto, N.
AU - Kelley, R. L.
AU - Kilbourne, C. A.
AU - Lindeman, M. A.
AU - Porter, F. S.
AU - Sadleir, J.
PY - 2006/4/14
Y1 - 2006/4/14
N2 - The proper understanding and modeling of a microcalorimeter's response requires accurate knowledge of a handful of parameters, such as C, G, α. While a few of these parameters are directly determined from the IV characteristics, some others, notoriously the heat capacity (C) and α, appear in degenerate combinations in most measurable quantities. The consideration of a complex microcalorimeter leads to an added ambiguity in the determination of the parameters. In general, the dependence of the microcalorimeter's complex impedance on these various parameters varies with frequency. This dependence allows us to determine individual parameters by fitting the prediction of the microcalorimeter model to impedance data. In this paper we describe efforts at characterizing the Goddard X-ray microcalorimeters. With the parameters determined by this method, we compare the pulse shape and noise spectra predictions to data taken with the same devices.
AB - The proper understanding and modeling of a microcalorimeter's response requires accurate knowledge of a handful of parameters, such as C, G, α. While a few of these parameters are directly determined from the IV characteristics, some others, notoriously the heat capacity (C) and α, appear in degenerate combinations in most measurable quantities. The consideration of a complex microcalorimeter leads to an added ambiguity in the determination of the parameters. In general, the dependence of the microcalorimeter's complex impedance on these various parameters varies with frequency. This dependence allows us to determine individual parameters by fitting the prediction of the microcalorimeter model to impedance data. In this paper we describe efforts at characterizing the Goddard X-ray microcalorimeters. With the parameters determined by this method, we compare the pulse shape and noise spectra predictions to data taken with the same devices.
KW - Impedance measurements
KW - Microcalorimeter
KW - X-ray spectrometer
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U2 - 10.1016/j.nima.2005.12.112
DO - 10.1016/j.nima.2005.12.112
M3 - Article
AN - SCOPUS:33645888127
SN - 0168-9002
VL - 559
SP - 712
EP - 714
JO - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
JF - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
IS - 2
ER -