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.

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

GIAZ, AGNESE;
2013-01-01

Abstract

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.
2013
AGATA; Gamma-ray spectroscopy; Gamma-ray tracking; HPGe detectors; Pulse-shape and gamma-ray tracking algorithms; Semiconductor detector performance and simulations
Crespi, F. C. L.; Avigo, R; Camera, F; Akkoyun, S; Ataç, A; Bazzacco, D; Bellato, M; Benzoni, G; Blasi, N; Bortolato, D; Bottoni, S; Bracco, A; Brambilla, S; Bruyneel, B; Ceruti, S; Ciemala, M; Coelli, S; Eberth, J; Fanin, C; Farnea, E; Gadea, A; Giaz, Agnese; Gottardo, A; Hess, H; Kmiecik, M; Leoni, S; Maj, A; Mengoni, Daniele; Michelagnoli, C; Million, B; Montanari, D; Nicolini, R; Pellegri, L; Recchia, Francesco; Reiter, P; Riboldi, S; Ur, C. A.; Vandone, V; Valiente Dobon, J. J.; Wieland, O; Wiens, A.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11383/2101564
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