Characterization of a gamma-ray tracking array: A comparison of GRETINA and Gammasphere using a 60Co source

T. Lauritsen, A. Korichi, S. Zhu, A. N. Wilson, D. Weisshaar, J. Dudouet, A. D. Ayangeakaa, M. P. Carpenter, C. M. Campbell, E. Clément, H. L. Crawford, M. Cromaz, P. Fallon, J. P. Greene, R. V F Janssens, T. L. Khoo, Natasa Lalovic, I. Y. Lee, A. O. Macchiavelli, R. M. Perez-VidalS. Pietri, D. C. Radford, D. Ralet, L. A. Riley, D. Seweryniak, O. Stezowski

Research output: Contribution to journalArticlepeer-review


In this paper, we provide a formalism for the characterization of tracking arrays with emphasis on the proper corrections required to extract their photopeak efficiencies and peak-to-total ratios. The methods are first applied to Gammasphere, a well characterized 4π array based on the principle of Compton suppression, and subsequently to GRETINA. The tracking efficiencies are then discussed and some guidelines as to what clustering angle to use in the tracking algorithm are presented. It was possible, using GEANT4 simulations, to scale the measured efficiencies up to the expected values for the full 4π implementation of GRETA.

Original languageEnglish
Pages (from-to)46-56
Number of pages11
JournalNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Publication statusPublished - 2016 Nov 11

Subject classification (UKÄ)

  • Subatomic Physics

Free keywords

  • Efficiency measurements
  • Gammasphere
  • Nuclear structure
  • Segmented germanium detectors
  • γ-Ray spectroscopy
  • γ-Ray tracking


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