Energy response of a novel compact Ge + BGO spectrometer for 4-20 MeV γ-rays

M. Csatlós, A. Krasznahorkay, J. C.S. Bacelar, A. Bałanda, W. Przygoda, S. Schadmand, M. J.A. De Voigt

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Abstract

The energy response of a novel composite Ge + BGO spectrometer has been measured for high-energy (4-20 MeV) photons. The spectrometer consists of a cooled Ge solid state central detector surrounded by a single BGO scintillator crystal without having interfering materials in between. Good energy resolution ( ≈ 1.7%) combined with a considerable photopeak efficiency (ε ≈ 17%) have been obtained at 15.1 MeV in "adding-back" mode. GEANT Monte-Carlo code simulations reproduce the measured response rather well and show a very good suppression factor against neutrons ( ≥ 100) and also against cosmic rays ( ≥ 3000) for this composite spectrometer.

Original languageEnglish
Pages (from-to)272-277
Number of pages6
JournalNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Volume421
Issue number1-2
DOIs
Publication statusPublished - jan. 21 1999

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ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Instrumentation

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