Performance of the AGATA gamma-ray spectrometer in the PreSPEC set-up at GSI
2016 (English)In: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, ISSN 0168-9002, E-ISSN 1872-9576, Vol. 806, 258-266 p.Article in journal (Refereed) PublishedText
In contemporary nuclear physics, the European Advanced GAmma Tracking Array (AGATA) represents a crucial detection system for cutting-edge nuclear structure studies. AGATA consists of highly segmented high-purity germanium crystals and uses the pulse-shape analysis technique to determine both the position and the energy of the y-ray interaction points in the crystals. It is the tracking algorithms that deploy this information and enable insight into the sequence of interactions, providing information on the full or partial absorption of the 7 ray. A series of dedicated performance measurements for an AGATA set-up comprising 21 crystals is described. This set-up was used within the recent PreSPEC-AGATA experimental campaign at the GSI Helmholtzzentrum fur Schwerionenforschung. Using the radioactive sources Co-56, Co-60 and Eu-152, absolute and normalized efficiencies and the peak-to-total of the array were measured. These quantities are discussed using different data analysis procedures. The quality of the pulse-shape analysis and the tracking algorithm are evaluated. The agreement between the experimental data and the Geant4 simulations is also investigated.
Place, publisher, year, edition, pages
2016. Vol. 806, 258-266 p.
Gamma-ray spectroscopy, Gamma-ray tracking, Nuclear structure, Pulse shape analysis, HPGe detectors
IdentifiersURN: urn:nbn:se:uu:diva-270410DOI: 10.1016/j.nima.2015.10.032ISI: 000364856100035OAI: oai:DiVA.org:uu-270410DiVA: diva2:912001