Compex: a cubic germanium detector

A. Såmark-Roth, D. M. Cox, J. Eberth, P. Golubev, D. Rudolph, L. G. Sarmiento, G. Tocabens, M. Ginsz, B. Pirard, P. Quirin

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The Compex detector is an electrically cooled, composite germanium detector that uses four coaxial, cubic-shaped, single-encapsulated germanium crystals. This novel detector allows for new heights in photon detection efficiency in decay spectroscopy setups using box-shaped vacuum chambers. Its spectroscopic performance and detection efficiency is evaluated by means of source measurements. Motivated by Compex’s unique cubic germanium crystals, the Lund scanning system has been developed. The constructed system is used to characterise the response as a function of interaction position within a Compex crystal. Sensitivity across the front face, pulse shapes, and rise times have been analysed. Future development and applications of the Compex detector are discussed.
Original languageEnglish
Article number141
Number of pages9
JournalEuropean Physical Journal A. Hadrons and Nuclei
Issue number5
Publication statusPublished - 2020 May 19

Subject classification (UKÄ)

  • Subatomic Physics

Free keywords

  • Composite germanium detector
  • Decay spectroscopy


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