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IEEE Transactions on Applied Superconductivity 19, 3 (2009) 501-504
Development of Superconducting NbSi TES Array and Associated Readout With SQUIDs and Integrated Circuit Operating at 2 K
D. Prêle1, M. Piat1, E. Bréelle1, F. Voisin1, Youssef Atik2, Benoit Belier3, Louis Dumoulin4, Corinne Evesque2, Geoffroy Klisnick5, Stefanos Marnieros4, François Pajot2, Michel Redon5, Gérard Sou5
R&T CNES DCMB Collaboration(s)

To further increase the sensitivity of future telescope projects dedicated to photometric astronomy observation at millimeter and sub-millimeter wavelengths, large number of bolometer is currently developed. In this context, The DCMB (Dévelopement Concerté de Matrice de Bolomètre) French collaboration makes an R&D effort to develop large bolometer arrays. This paper concentrates on a first demonstration of NbSi TES (Transition-Edge Sensors) array development: a 23 NbSi superconducting thermometer array. Firstly, the NbSi thin film alloy is described then the 23 TES array topology is presented. The readout of large TES arrays requires ultra low noise amplification and multiplexing electronics. The use of a first stage transducer such as a SQUID (Superconducting QUantum Interference Device) allows ultimate performances in terms of noise. However, the linearization of the SQUID characteristic requires a Low Noise Amplifier (LNA) to generate a Flux Lock Loop (FLL). We implement this component in a cryogenic SiGe Integrated Circuit (IC) that could also contains the control of the multiplexing. Using this readout chain, a one-pixel operation using NbSi thermometer readout by SQUID and a cryogenicLNAis demonstrated. Finally, the development of a specific cryogenic IC including amplifiers, addressing and switching current sources needed for a 24 to 1 time domain SQUID multiplexer is presented
1 :  APC - UMR 7164 - AstroParticule et Cosmologie
2 :  IAS - Institut d'astrophysique spatiale
3 :  IEF - Institut d'électronique fondamentale
4 :  CSNSM - Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse
5 :  L2E - Laboratoire d'Electronique et Electromagnétisme
APC - Cosmologie et gravitation
Sciences de l'ingénieur/Micro et nanotechnologies/Microélectronique
Bolometers – cryogenic electronics – noise – SiGe BiCMOS analog integrated circuits – SQUIDs – time division multiplexing