Performance of a Low-Noise Test Facility for the SAFARI TES Bolometer Arrays

M. D. Audley*, G. de Lange, L. Ferrari, J-R. Gao, R. A. Hijmering, P. Khosropanah, M. Lindeman, M. de Ridder

*Bijbehorende auteur voor dit werk

    OnderzoeksoutputAcademicpeer review

    5 Citaten (Scopus)


    We have constructed a test facility for characterizing the focal plane arrays of SAFARI, the far-infrared imaging spectrometer for the SPICA satellite. SAFARI's three bolometer arrays are populated with extremely sensitive (NEP similar to 2 x 10(-19) W/root Hz) transition edge sensors with a transition temperature close to 100 mK. The extreme sensitivity and low saturation power (similar to 4 fW) of SAFARI's detectors present challenges to characterizing them. In optimizing the SAFARI Detector System Test Facility we have paid careful attention to stray-light exclusion as well as electrical, magnetic, and mechanical isolation. We present measurements verifying the facility's performance and analyze them in terms of a two-fluid model of the TES current on the transition to investigate the background power level. We have measured a detector NEP of (5.1 +/- 0.4) x 10(-19) WHz(-1/2), showing that the facility is ready to test the SAFARI prototype arrays and is approaching the performance needed for testing the flight arrays.

    Originele taal-2English
    Pagina's (van-tot)208-213
    Aantal pagina's6
    TijdschriftJournal of Low Temperature Physics
    Nummer van het tijdschrift3-4
    StatusPublished - mei-2012
    Evenement14th International Workshop on Low Temperature Particle Detection (LTD) - , Germany
    Duur: 1-aug-20115-aug-2011

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