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Characterization of NbSi TES Bolometers: Preliminary Results

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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 \(10^{-16}\ \mathrm{W}/\sqrt{\mathrm{Hz}}\). Those detectors are developed for the QUBIC experiment, a B-modes telescope that will be deployed in Antactica in 2013.

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Acknowledgements

This work is supported by CNES, CNRS, Paris Diderot and Paris-Sud universities under the BSD French R & D project (B-mode Superconducting Detectors).

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Authors and Affiliations

  1. APC 10, rue A. Domon et L. Duquet, 75205, Paris Cedex 13, France

    J. Martino, D. Prele, M. Piat, F. Voisin, E. Breelle & G. Bordier

  2. IEF, Bt. 220, Universit Paris Sud-11, 91405, Orsay, France

    B. Belier

  3. CSNSM, Bt. 104, Universit Paris Sud-11, 91405, Orsay, France

    S. Marnieros

  4. IAS, Bt. 121, Universit Paris Sud-11, 91405, Orsay, France

    F. Pajot & Y. Atik

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  1. J. Martino
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  2. D. Prele
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  3. M. Piat
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  4. F. Voisin
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  5. E. Breelle
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  6. B. Belier
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  7. G. Bordier
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  8. S. Marnieros
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  9. F. Pajot
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  10. Y. Atik
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Correspondence to J. Martino.

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Martino, J., Prele, D., Piat, M. et al. Characterization of NbSi TES Bolometers: Preliminary Results. J Low Temp Phys 167, 176–181 (2012). https://doi.org/10.1007/s10909-012-0515-9

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  • DOI: https://doi.org/10.1007/s10909-012-0515-9

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