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Characterization of the LUNA neutron detector array for the measurement of the 13C(a,n)16O reaction

Fuente: arXiv

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Main Authors:	Csedreki, L., Ciani, G. F., Balibrea-Correa, J., Best, A., Aliotta, M., Barile, F., Bemmerer, D., Boeltzig, A., Broggini, C., Bruno, C. G., Caciolli, A., Cavanna, F., Chillery, T., Colombetti, P., Corvisiero, P., Davinson, T., Depalo, R., Di Leva, A., Elekes, Z., Ferraro, F., Fiore, E. M., Formicola, A., Fulop, Zs., Gervino, G., Guglielmetti, A., Gustavino, C., Gyurky, Gy., Imbriani, G., Janas, Z., Junker, M., Kochanek, I., Lugaro, M., Marigo, P., Masha, E., Mazzocchi, C., Menegazzo, R., Mossa, V., Pantaleo, F. R., Paticchio, V., Perrino, R., Piatti, D., Prati, P., Schiavulli, L., Stockel, K., Straniero, O., Szucs, T., Takacs, M. P., Terrasi, F., Zavatarelli, S.
Format:	Preprint
Published:	2024
Subjects:	Instrumentation and Detectors Nuclear Experiment
Online Access:	Acceder al recurso
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_version_	1866917831255261184
author	Csedreki, L. Ciani, G. F. Balibrea-Correa, J. Best, A. Aliotta, M. Barile, F. Bemmerer, D. Boeltzig, A. Broggini, C. Bruno, C. G. Caciolli, A. Cavanna, F. Chillery, T. Colombetti, P. Corvisiero, P. Davinson, T. Depalo, R. Di Leva, A. Elekes, Z. Ferraro, F. Fiore, E. M. Formicola, A. Fulop, Zs. Gervino, G. Guglielmetti, A. Gustavino, C. Gyurky, Gy. Imbriani, G. Janas, Z. Junker, M. Kochanek, I. Lugaro, M. Marigo, P. Masha, E. Mazzocchi, C. Menegazzo, R. Mossa, V. Pantaleo, F. R. Paticchio, V. Perrino, R. Piatti, D. Prati, P. Schiavulli, L. Stockel, K. Straniero, O. Szucs, T. Takacs, M. P. Terrasi, F. Zavatarelli, S.
author_facet	Csedreki, L. Ciani, G. F. Balibrea-Correa, J. Best, A. Aliotta, M. Barile, F. Bemmerer, D. Boeltzig, A. Broggini, C. Bruno, C. G. Caciolli, A. Cavanna, F. Chillery, T. Colombetti, P. Corvisiero, P. Davinson, T. Depalo, R. Di Leva, A. Elekes, Z. Ferraro, F. Fiore, E. M. Formicola, A. Fulop, Zs. Gervino, G. Guglielmetti, A. Gustavino, C. Gyurky, Gy. Imbriani, G. Janas, Z. Junker, M. Kochanek, I. Lugaro, M. Marigo, P. Masha, E. Mazzocchi, C. Menegazzo, R. Mossa, V. Pantaleo, F. R. Paticchio, V. Perrino, R. Piatti, D. Prati, P. Schiavulli, L. Stockel, K. Straniero, O. Szucs, T. Takacs, M. P. Terrasi, F. Zavatarelli, S.
contents	We introduce the LUNA neutron detector array developed for the investigation of the 13C(a,n)16O reaction towards its astrophysical s-process Gamow peak in the low-background environment of the Laboratori Nazionali del Gran Sasso (LNGS). Eighteen 3He counters are arranged in two different configurations (in a vertical and a horizontal orientation) to optimize neutron detection effciency, target handling and target cooling over the investigated energy range Ea;lab = 300 - 400 keV (En = 2.2 - 2.6 MeV in emitted neutron energy). As a result of the deep underground location, the passive shielding of the setup and active background suppression using pulse shape discrimination, we reached a total background rate of 1.23 +- 0.12 counts/hour. This resulted in an improvement of two orders of magnitude over the state of the art allowing a direct measurement of the 13C(a,n)16O cross-section down to Ea;lab = 300 keV. The absolute neutron detection efficiency of the setup was determined using the 51V(p,n)51Cr reaction and an AmBe radioactive source, and completed with a Geant4 simulation. We determined a (34+-3) % and (38+-3) % detection efficiency for the vertical and horizontal configurations, respectively, for En = 2.4 MeV neutrons.
format	Preprint
id	arxiv_https___arxiv_org_abs_2411_05053
institution	arXiv
publishDate	2024
record_format	arxiv
spellingShingle	Characterization of the LUNA neutron detector array for the measurement of the 13C(a,n)16O reaction Csedreki, L. Ciani, G. F. Balibrea-Correa, J. Best, A. Aliotta, M. Barile, F. Bemmerer, D. Boeltzig, A. Broggini, C. Bruno, C. G. Caciolli, A. Cavanna, F. Chillery, T. Colombetti, P. Corvisiero, P. Davinson, T. Depalo, R. Di Leva, A. Elekes, Z. Ferraro, F. Fiore, E. M. Formicola, A. Fulop, Zs. Gervino, G. Guglielmetti, A. Gustavino, C. Gyurky, Gy. Imbriani, G. Janas, Z. Junker, M. Kochanek, I. Lugaro, M. Marigo, P. Masha, E. Mazzocchi, C. Menegazzo, R. Mossa, V. Pantaleo, F. R. Paticchio, V. Perrino, R. Piatti, D. Prati, P. Schiavulli, L. Stockel, K. Straniero, O. Szucs, T. Takacs, M. P. Terrasi, F. Zavatarelli, S. Instrumentation and Detectors Nuclear Experiment We introduce the LUNA neutron detector array developed for the investigation of the 13C(a,n)16O reaction towards its astrophysical s-process Gamow peak in the low-background environment of the Laboratori Nazionali del Gran Sasso (LNGS). Eighteen 3He counters are arranged in two different configurations (in a vertical and a horizontal orientation) to optimize neutron detection effciency, target handling and target cooling over the investigated energy range Ea;lab = 300 - 400 keV (En = 2.2 - 2.6 MeV in emitted neutron energy). As a result of the deep underground location, the passive shielding of the setup and active background suppression using pulse shape discrimination, we reached a total background rate of 1.23 +- 0.12 counts/hour. This resulted in an improvement of two orders of magnitude over the state of the art allowing a direct measurement of the 13C(a,n)16O cross-section down to Ea;lab = 300 keV. The absolute neutron detection efficiency of the setup was determined using the 51V(p,n)51Cr reaction and an AmBe radioactive source, and completed with a Geant4 simulation. We determined a (34+-3) % and (38+-3) % detection efficiency for the vertical and horizontal configurations, respectively, for En = 2.4 MeV neutrons.
title	Characterization of the LUNA neutron detector array for the measurement of the 13C(a,n)16O reaction
topic	Instrumentation and Detectors Nuclear Experiment
url	https://arxiv.org/abs/2411.05053