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Response of AGATA segmented HPGe detectors to gamma rays up to 15.1 MeV

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Response of AGATA segmented HPGe detectors to gamma rays up to 15.1 MeV

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AGATA Collaboration; Avigo, R.; Camera, F.; Akkoyun, S.; Bazzacco, D.; Bellato, Marco; Benzoni, G.; Blasi, N.; Bortolato, D.; Bottoni, S.; Bracco, A.; Brambilla, S.; Coelli, S.; Gadea Raga, Andrés

Aquest document és un/a article, creat/da en: 2013

Este documento está disponible también en : 10.1016/j.nima.2012.12.084

The response of AGATA segmented HPGe detectors to gamma rays in the energy range 2-15 MeV was measured. The 15.1 MeV gamma rays were produced using the reaction d(B-11,n gamma)C-12 at E-beam=19.1 MeV, while gamma rays between 2 and 9 MeV were produced using an Am-Be-Fe radioactive source. The energy resolution and linearity were studied and the energy-to-pulse-height conversion resulted to be linear within 0.05%.Experimental interaction multiplicity distributions are discussed and compared with the results of Geant4 simulations. It is shown that the application of gamma-ray tracking allows a suppression of background radiation caused by n-capture in Ge nuclei. Finally the Doppler correction for the 15.1 MeV gamma line, performed using the position information extracted with Pulse-shape analysis is discussed.

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