Complex Impedance and Equivalent Bolometer Analysis of a Low Noise Bolometer for SAFARI

Lindeman, M. A.; Khosropanah, P.; Hijmering, R. A.; Ridder, M.; Gottardi, L.; Bruijn, M. P.; Kuur, J. van der; Korte, P. A. J. de; Gao, J. R.; Hoevers, H.

doi:10.1007/s10909-012-0572-0

Cited by 5 publications

(3 citation statements)

References 10 publications

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“…More complex bolometers result in larger matrices which may be analyzed using the steps presented above. Additionally, equivalent bolometer analysis (EBA), 17,18 which has been used to derive general relationships for complex DC bolometers, can be applied to AC bolometers as well.…”

Section: Discussionmentioning

confidence: 99%

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Model of superconducting alternating current bolometers

Lindeman

Khosropanah

Hijmering

2013

Journal of Applied Physics

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We present a model of the response of superconducting AC bolometers to signal and noise using parameters and matrix formalism that were previously adopted in modeling DC bolometers and microcalorimeters. The model was developed to investigate novel AC bolometer designs, which have properties not described by previous models. It is applicable to kinetic inductance devices, kinetic inductance thermometers, AC transition edge sensors, and other technologies based on AC read out and frequency mixing. The AC bolometer model includes the temperature and current dependence of both resistive and inductive bolometers and microcalorimeters. The bolometers may be thermal or athermal. The model compactly describes the complex relationships between electrical and thermal signals and it simplifies the associated calculations. This model is useful for characterizing bolometers, predicting the effects of various noise sources on performance and designing new detectors. Additionally, a measurement technique is developed for characterizing these devices. V C 2013 American Institute of Physics. [http://dx.

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Section: Discussionmentioning

confidence: 99%

“…II, contributing to the coefficients a, a Ã , and G ef f in the matrix of Eq. (18). Each of the amplitude dependent @Z=@I cos terms has a similar form to the @Z=@T term: They contribute additional terms (containing I USB and I LSB ) to the thermal equation and the sideband equations.…”

Section: Ac Current Dependencementioning

confidence: 99%

Model of superconducting alternating current bolometers

Lindeman

Khosropanah

Hijmering

2013

Journal of Applied Physics

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“…For this experiment a well characterized Ti/Au bolometer is used with properties close to the specification of the final pixel design for the SAFARI instrument, Table 1 [8,9]. The bolometer is of the straight leg design; see Fig.…”

Section: Bolometer and Set-upmentioning

confidence: 99%

Effect of Magnetic Fields on TiAu TES Bolometers for the SAFARI Instrument on the SPICA FIR Telescope

et al. 2012

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At the Netherlands Institute for Space Research (SRON) we are developing Transition Edge Sensors (TES) bolometers for the SAFARI Imaging Spectrometer on the SPICA telescope. With the current design of the SPICA telescope a background magnetic field of about a Gauss with fluctuations of a couple percent is expected. The effect of this external magnetic field on the bolometer needs to be well understood in order to design effective shielding. We present the results of an investigation of magnetic field on the performance of TES bolometers. For this experiment we used a Ti/Au TES bolometer which has a measured NEP of 5.0 × 10 −19 W/Hz 1/2 . The TES is exposed to a parallel and perpendicular magnetic field of varying strength and the baseline and responsivity are determined. We see that the bolometers are sensitive to the perpendicular field but are relative insensitive to the parallel magnetic field. Fluctuations with a period of 30 mG are present as function of perpendicular magnetic field.

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