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Single Pixel Characterization of X-Ray TES Microcalorimeter Under AC Bias at MHz FrequenciesIn this paper we present the progress made at SRON in the read-out of GSFC x-ray transition-edge sensor (TES) micro-calorimeters in the frequency domain. The experiments reported so far, whose aim was to demonstrate an energy resolution of 2eV at 6 keV with a TES acting as a modulator, were carried out at frequencies below 700 kHz using a standard flux locked loop (FLL) SQUID read-out scheme. The TES read-out suffered from the use of sub-optimal circuit components, large parasitic inductances, low quality factor resonators and poor magnetic field shielding. We have developed a novel experimental set-up, which allows us to test several read-out schemes in a single cryogenic run. In this set-up, the TES pixels are coupled via superconducting transformers to 18 high-Q lithographic LC filters with resonant frequencies ranging between 2 and 5 MHz. The signal is amplified by a two-stage SQUID current sensor and baseband feedback is used to overcome the limited SQUID dynamic range. We study the single pixel performance as a function of TES bias frequency, voltage and perpendicular magnetic field.
Document ID
20120011706
Acquisition Source
Goddard Space Flight Center
Document Type
Conference Paper
Authors
Gottardi, L. (Space Research Organization Netherlands Utrecht, Netherlands)
Blandler, S. R. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Porter, F. S.
Sadleir, J. E.
Kilbourne, C. A. (Space Research Organization Netherlands Utrecht, Netherlands)
Bailey, C. N.
Finkbeiner, F. M.
Chervenak, J. A.
Adams, J. S.
Eckart, M. E.
Kelley, R. L.
Smith, S. J.
Linden, T. V. D.
Hoevers, H.
Kuur, J. V. D.
Lindeman, M.
Bruijn, M.
Hortog, R. D.
Kiviranta, M.
Date Acquired
August 26, 2013
Publication Date
January 1, 2012
Subject Category
Electronics And Electrical Engineering
Report/Patent Number
GSFC.ABS.01036.2012
Meeting Information
Meeting: Applied Superconductivity Conference
Location: Portland, OR
Country: United States
Start Date: October 7, 2012
End Date: October 11, 2012
Sponsors: Centennial Conferences
Funding Number(s)
CONTRACT_GRANT: NNH06CC03B
Distribution Limits
Public
Copyright
Public Use Permitted.

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