Compex: a cubic germanium detector

Research output: Contribution to journalArticle


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.


External organisations
  • University of Cologne
  • University of Paris-Saclay
  • Mirion Technologies (Canberra)
Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Subatomic Physics


  • Composite germanium detector, Decay spectroscopy
Original languageEnglish
Article number141
Number of pages9
JournalEuropean Physical Journal A. Hadrons and Nuclei
Issue number5
Publication statusPublished - 2020 May 19
Publication categoryResearch

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Related projects

Anton Såmark-Roth, Dirk Rudolph & Luis Sarmiento Pico


Project: DissertationIndividual research project, International collaboration

Dirk Rudolph, Sven Åberg, Gillis Carlsson, Christoph Emanuel Düllmann, Pavel Golubev, Luis Sarmiento Pico, Ulrika Forsberg, Jussi Toivanen, Daniel Ward, Daniel Cox, Christian Lorenz, Anton Såmark-Roth, Martin Albertsson, Jimmy Ljungberg, Yuliia Hrabar, Yulia Lindholm, Katarina Lindqvist & Mari Lundberg

Crafoord Foundation, Knut and Alice Wallenberg Foundation, The Nobel Foundation


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Dirk Rudolph, Claes Fahlander, Pavel Golubev, Luis Sarmiento Pico, Daniel Cox, Yuliia Hrabar, Anton Såmark-Roth, Ulrika Forsberg, Christian Lorenz, Natasa Lalovic, Natasa Lalovic, Ulrika Forsberg, Jnaneswari Gellanki, Robert Hoischen, Emma Johansson, Lise-Lotte Andersson, Rickard du Rietz, Jörgen Ekman & Corina Andreoiu

Swedish Research Council


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Related activities

Såmark-Roth, A. (Speaker)
2019 Oct 24

Activity: Talk or presentationPresentation

Såmark-Roth, A. (Speaker)
2019 Aug 30

Activity: Talk or presentationPresentation

Rudolph, D. (Invited speaker)
2019 Aug 30

Activity: Talk or presentationInvited talk

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