Characterization of NbSi TES Bolometers: Preliminary Results

Abstract : We present preliminary results on characterisation of voltage biased superconducting bolometers with an NbSi alloy sensor. I(V) curves as well as complex impedance and noise measurements are carried out in a dilution fridge with a pulse tube as a first stage cooler. SQUIDs polarization and addressing are controlled by a cold ASIC in which a SiGe amplifier has been implemented. First characterisations were done on full membrane bolometers and show a noise level of about 10(-16) W/root Hz. Those detectors are developed for the QUBIC experiment, a B-modes telescope that will be deployed in Antactica in 2013


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Contributor : Hadrossek Christine <>
Submitted on : Wednesday, May 9, 2012 - 4:00:37 PM
Last modification on : Wednesday, May 9, 2012 - 4:00:37 PM

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J. Martino, D. Prêle, M. Piat, F. Voisin, E. Bréelle, et al.. Characterization of NbSi TES Bolometers: Preliminary Results. 14th International Workshop on Low Temperature Particle Detection (LTD), Aug 2011, Heidelberg, Germany. 167, pp.176-181, 2012, <10.1007/s10909-012-0515-9>. <in2p3-00695717>

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