Characterization of NbSi TES Bolometers: Preliminary Results

J. Martino; D. Prêle; M. Piat; F. Voisin; E. Bréelle; B. Belier; G. Bordier; S. Marnieros; F. Pajot; Y. Atik

HAL: in2p3-00695717, version 1

DOI: 10.1007/s10909-012-0515-9

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14th International Workshop on Low Temperature Particle Detection (LTD), Heidelberg : Allemagne (2011)

Characterization of NbSi TES Bolometers: Preliminary Results

J. Martino¹, D. Prêle¹, M. Piat¹, F. Voisin¹, E. Bréelle¹, B. Belier², G. Bordier¹, S. Marnieros³, F. Pajot⁴, Y. Atik⁴

(2012)

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

1:	APC - AstroParticule et Cosmologie

2:	IEF - Institut d'électronique fondamentale

3:	CSNSM - Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse

4:	IAS - Institut d'astrophysique spatiale

Research team: APC - Cosmologie et Gravitation
CSNSM PS1

Subject(s)

Physics/Physics/Instrumentation and Detectors

Physics/Condensed Matter/Superconductivity

Keyword(s) : TES – Bolometers – NbSi – Cosmic microwave background – Noise – Complex impedance


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From: Christine Hadrossek <>
Submitted on: Wednesday, 9 May 2012 16:37:53
Updated on: Monday, 14 May 2012 10:07:05