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112-Pixel Arrays of High-Efficiency STJ X-Ray Detectors

Friedrich, S. et al.

Journal of low temperature physics. VOL 176; NUMBER 3-4, ; 2014, 553-559 -- Springer Science + Business Media Part 3-4; (pages 553-559) -- 2014

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  • Title:
    112-Pixel Arrays of High-Efficiency STJ X-Ray Detectors
  • Author: Friedrich, S.;
    Harris, J.;
    Warburton, W. K.;
    Carpenter, M. H.;
    Hall, J. A.;
    Cantor, R.
  • Found In: Journal of low temperature physics. VOL 176; NUMBER 3-4, ; 2014, 553-559
  • Journal Title: Journal of low temperature physics.
  • Subjects: Physics; LCC: QC278; Dewey: 536.56
  • Publication Details: Springer Science + Business Media
  • Language: English
  • Abstract: We are developing the next generation of high-resolution high-speed X-ray detectors based on superconducting tunnel junctions (STJs). They consist of 112-pixel arrays of 208  Formula Not Shown m Formula Not Shown 208  Formula Not Shown m Ta–Al– Formula Not Shown –Al–Ta tunnel junctions whose Ta absorber increases the detection efficiency compared to earlier Nb-based STJs. To read out these medium size detector arrays we have also developed a compact and scalable 32-channel preamplifier with an input voltage noise Formula Not Shown 1 nV/ Formula Not Shown Hz and a dc voltage bias for stable STJ operation between Fiske mode resonances. The pixels have a uniform response across the array, an energy resolution between 7.5 and 9.5 eV FWHM at 525 eV, and can be operated at several 1,000 counts/s per pixel.
  • Identifier: Journal ISSN: 0022-2291
  • Publication Date: 2014
  • Physical Description: Physical
  • Accrual Information: Monthly
  • Shelfmark(s): 5010.570000
  • UIN: ETOCRN354940806

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