A parallel/series array of superconducting cold-electron bolometers with SIS' tunnel junctions

Leonid Kuzmin

doi:10.1117/12.789681

19 July 2008 A parallel/series array of superconducting cold-electron bolometers with SIS' tunnel junctions

Leonid Kuzmin

Proceedings Volume 7020, Millimeter and Submillimeter Detectors and Instrumentation for Astronomy IV; 702018 (2008) https://doi.org/10.1117/12.789681
Event: SPIE Astronomical Telescopes + Instrumentation, 2008, Marseille, France

Abstract

A novel concept of the parallel/series array of Superconducting Cold-Electron Bolometers (SCEB) with a superconducting absorber and a SIS' (Superconductor-Insulator-Weak Superconductor) Tunnel Junctions has been proposed. The current-biased SCEBs are connected in series for DC and in parallel for HF signal. A signal is concentrated to the absorber through the capacitance of tunnel junctions and additional capacitance for coupling of superconducting islands. Due to dividing power between an array of SCEBs and increasing responsivity, the noise matching is so effective that the photon NEP could be easily achieved at 300 mK with a room temperature JFET readout. The concept has been developed for matching with JFET readout for BOOMERanG balloon telescope. BOOMERanG is devoted for measuring the CMB polarization.

Citation Download Citation

Leonid Kuzmin "A parallel/series array of superconducting cold-electron bolometers with SIS' tunnel junctions", Proc. SPIE 7020, Millimeter and Submillimeter Detectors and Instrumentation for Astronomy IV, 702018 (19 July 2008); https://doi.org/10.1117/12.789681

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