X-ray photon detection with multilayered Josephson junctions

C. Thomas*, S. R. Maglic, S. N. Song, M. P. Ulmer, J. B. Ketterson

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

Superconducting tunnel junctions can be configured as high resolution X-ray spectrometers however, because they are thin, STJs suffer from inherent photoabsorption inefficiency. A common approach to enhance quantum efficiency is to couple the junctions to superconducting absorbers and employ quasiparticle traps. An alternative approach is to use vertical stacks of tunnel junctions as detectors. These multilayered superconducting tunnel junctions (MSTJs) need not be thin and may have additional advantages including increased signal to noise ratio. We report on the fabrication of multilayered tunnel junctions and successful X-ray detection by an MSTJ.

Original languageEnglish (US)
Pages (from-to)38-40
Number of pages3
JournalNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Volume370
Issue number1
DOIs
StatePublished - Feb 11 1996

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Instrumentation

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