Dual-detector for simultaneous time and energy measurements with superconductive detectors

M. Ejrnaes*, E. Esposito, M. P. Lissitski, S. Pagano, D. Perez De Lara, R. Cristiano

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

2 Scopus citations


The development of a superconductive detector for simultaneous measurement of energy and arrival time is reported. The detector consists of two superconducting tunnel junctions coupled through a passive network. The first junction operates in the quasi-particle regime and measures the energy absorbed by counting the total charge that tunnels. The second junction uses the DC Josephson effect to act as a fast discriminator for the onset of surplus current in the first junction. The feasibility of the detector is demonstrated through simultaneous time and energy measurements of 6 keV X-rays. A model of the detector is presented and numerical simulations show good correspondence with experimental data.

Original languageEnglish
Pages (from-to)41-43
Number of pages3
JournalNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Issue number1-3
StatePublished - 11 Mar 2004
Externally publishedYes


  • Josephson junction
  • Non-equilibrium superconductivity
  • Radiation detector
  • Time discriminator


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