A superconducting tunnel junction X-ray detector design for practical applications

L. J. Hiller, S. E. Labov, C. A. Mears, H. Netel, Matthias Frank, M. A. Lindeman

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Superconducting tunnel junctions coupled to a superconducting absorber can be used as a high-resolution energy-dispersive X-ray detector. The energy of an absorbed X-ray breaks Cooper pairs in the absorber, producing quasiparticles. These quasiparticles can tunnel through the barrier and be counted. When used in conjunction with FET electronics, however, the noise requirements limit the area of the tunnel junction. In many designs, this also limits the absorber area. We present a detector design that separates the absorber from the junction. It features a tantalum absorber for high absorption efficiency and an aluminum transport layer for rapid, low loss transport to the junction. Transport is aided by multiple trapping stages, while fabrication is simplified by using only two materials.

Original languageEnglish (US)
Pages (from-to)81-84
Number of pages4
JournalNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Volume370
Issue number1
DOIs
StatePublished - Feb 11 1996
Externally publishedYes

Fingerprint

Tunnel junctions
tunnel junctions
absorbers
Detectors
X rays
detectors
Tantalum
Field effect transistors
Tunnels
x rays
Electronic equipment
Aluminum
Fabrication
tantalum
tunnels
field effect transistors
trapping
aluminum
requirements
fabrication

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Instrumentation

Cite this

A superconducting tunnel junction X-ray detector design for practical applications. / Hiller, L. J.; Labov, S. E.; Mears, C. A.; Netel, H.; Frank, Matthias; Lindeman, M. A.

In: Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 370, No. 1, 11.02.1996, p. 81-84.

Research output: Contribution to journalArticle

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