Response of AGATA Segmented HPGe Detectors to Gamma Rays up to 15.1 MeV

F. C. L. Crespi; R. Avigo; F. Camera; S. Akkoyun; A. Atac; D. Bazzacco; M. Bellato; G. Benzoni; N. Blasi; D. Bortolato; S. Bottoni; A. Bracco; S. Brambilla; B. Bruyneel; S. Cerutia; M. Ciemala; S. Coelli; J. Eberth; C. Fanin; E. Farnea; A. Gadea; A. Giaz; A. Gottardo; H. Hess; M. Kmiecik; S. Leoni; A. Maj; D. Mengoni; C. Michelagnoli; B. Million; D. Montanari; L. Pellegri; F. Recchia; P. Reiter; S. Riboldi; C. A. Ur; V. Vandone; J. J. Valiente-Dobon; O. Wieland; A. Wiens; The AGATA Collaboration

doi:10.1016/j.nima.2012.12.084

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arXiv · 1209.1188

Response of AGATA Segmented HPGe Detectors to Gamma Rays up to 15.1 MeV

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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(11B,ng)12C at Ebeam = 19.1 MeV, while gamma-rays between 2 to 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 following neutron capture by 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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F. C. L. Crespi, R. Avigo, F. Camera, S. Akkoyun, A. Atac, D. Bazzacco, M. Bellato, G. Benzoni, N. Blasi, D. Bortolato, S. Bottoni, A. Bracco, S. Brambilla, B. Bruyneel, S. Cerutia, M. Ciemala, S. Coelli, J. Eberth, C. Fanin, E. Farnea, A. Gadea, A. Giaz, A. Gottardo, H. Hess, M. Kmiecik, S. Leoni, A. Maj, D. Mengoni, C. Michelagnoli, B. Million, D. Montanari, L. Pellegri, F. Recchia, P. Reiter, S. Riboldi, C. A. Ur, V. Vandone, J. J. Valiente-Dobon, O. Wieland, A. Wiens, The AGATA Collaboration. 2012-09-06. Response of AGATA Segmented HPGe Detectors to Gamma Rays up to 15.1 MeV. https://doi.org/10.1016/j.nima.2012.12.084

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