CERN Accelerating science

Article
Report number	arXiv:2311.01365
Title	Pushing the high count rate limits of scintillation detectors for challenging neutron-capture experiments
Author(s)	Balibrea-Correa, J. (Valencia U. ; Valencia U., IFIC) ; Lerendegui-Marco, J. (Valencia U. ; Valencia U., IFIC) ; Babiano-Suarez, V. (Valencia U. ; Valencia U., IFIC) ; Domingo-Pardo, C. (Valencia U. ; Valencia U., IFIC) ; Ladarescu, I. (Valencia U. ; Valencia U., IFIC) ; Tarifeño-Saldivia, A. (Valencia U. ; Valencia U., IFIC) ; Fuente-Rosales, G. De La ; Alcayne, V. (Madrid, CIEMAT) ; Cano-Ott, D. (Madrid, CIEMAT) ; González-Romero, E. (Madrid, CIEMAT) ; Martínez, T. (Madrid, CIEMAT) ; Mendoza, E. (Madrid, CIEMAT) ; De Rada, A. Pérez ; Del Olmo, J. Plaza ; Sánchez-Caballero, A. (Madrid, CIEMAT) ; Casanovas, A. (Barcelona, Polytechnic U.) ; Calviño, F. (Barcelona, Polytechnic U.) ; Valenta, S. (Charles U.) ; Aberle, O. (CERN) ; Altieri, S. (INFN, Pavia ; Pavia U.) ; Amaducci, S. (INFN, Catania) ; Andrzejewski, J. (Lodz U.) ; Bacak, M. (CERN) ; Beltrami, C. (INFN, Pavia) ; Bennett, S. (Manchester U.) ; Bernardes, A.P. (CERN) ; Berthoumieux, E. (IRFU, Saclay) ; Beyer, R. (HZDR, Dresden) ; Boromiza, M. (Bucharest, IFIN-HH) ; Bosnar, D. (Zagreb U., Phys. Dept.) ; Caamaño, M. (Santiago de Compostela U.) ; Calviani, M. (CERN) ; Castelluccio, D.M. (INFN, Bologna) ; Cerutti, F. (CERN) ; Cescutti, G. (INFN, Trieste ; Trieste U.) ; Chasapoglou, S. (Natl. Tech. U., Athens) ; Chiaveri, E. (CERN ; Manchester U.) ; Colombetti, P. (INFN, Turin ; Turin U.) ; Colonna, N. (INFN, Bari) ; Camprini, P. Console ; Cortés, G. (Barcelona, Polytechnic U.) ; Cortés-Giraldo, M.A. (Seville U.) ; Cosentino, L. (INFN, Catania) ; Cristallo, S. (INFN, Perugia ; Cagliari Observ.) ; Dellmann, S. (Goethe U., Frankfurt (main)) ; Di Castro, M. ; Di Maria, S. (Lisbon, IST) ; Diakaki, M. (Natl. Tech. U., Athens) ; Dietz, M. (Braunschweig, Phys. Tech. Bund.) ; Dressler, R. (PSI, Villigen) ; Dupont, E. (IRFU, Saclay) ; Durán, I. (Santiago de Compostela U.) ; Eleme, Z. (Ioannina U.) ; Fargier, S. (CERN) ; Fernández, B. (Seville U.) ; Fernández-Domínguez, B. (Santiago de Compostela U.) ; Finocchiaro, P. (INFN, Catania) ; Fiore, S. (INFN, Rome) ; Furman, V. ; García-Infantes, F. (CERN ; Granada U.) ; Gawlik-Ramikega, A. (Lodz U.) ; Gervino, G. (INFN, Turin ; Turin U.) ; Gilardoni, S. (CERN) ; Guerrero, C. (Seville U.) ; Gunsing, F. (IRFU, Saclay) ; Gustavino, C. (INFN, Rome) ; Heyse, J. (Geel, JRC) ; Hillman, W. (Manchester U.) ; Jenkins, D.G. (York U., England) ; Jericha, E. (HZDR, Dresden) ; Junghans, A. (HZDR, Dresden) ; Kadi, Y. (CERN) ; Kaperoni, K. (Natl. Tech. U., Athens) ; Kaur, G. (IRFU, Saclay) ; Kimura, A. (JAEA, Ibaraki) ; Knapová, I. (Charles U.) ; Kokkoris, M. (Natl. Tech. U., Athens) ; Kopatch, Y. ; Krtička, M. (Charles U.) ; Kyritsis, N. (Natl. Tech. U., Athens) ; Lederer-Woods, C. (Edinburgh U.) ; Lerner, G. (CERN) ; Manna, A. (INFN, Bologna ; Bologna U.) ; Masi, A. (CERN) ; Massimi, C. (INFN, Bologna ; Bologna U.) ; Mastinu, P. (INFN, Legnaro) ; Mastromarco, M. (INFN, Bari ; Bari U.) ; Maugeri, E.A. (PSI, Villigen) ; Mazzone, A. (INFN, Bari ; CNR, INO, Pisa) ; Mengoni, A. (INFN, Bologna) ; Michalopoulou, V. (Natl. Tech. U., Athens) ; Milazzo, P.M. (INFN, Trieste) ; Mucciola, R. (INFN, Perugia ; U. Perugia (main)) ; Murtas, F. (Frascati) ; Musacchio-Gonzalez, E. (INFN, Legnaro) ; Musumarra, A. (INFN, Catania ; INFN, LNS ; Catania U.) ; Negret, A. (Bucharest, IFIN-HH) ; Pérez-Maroto, P. (Seville U.) ; Patronis, N. (CERN ; Ioannina U.) ; Pavón-Rodríguez, J.A. (CERN ; Seville U.) ; Pellegriti, M.G. (INFN, Catania) ; Perkowski, J. (Lodz U.) ; Petrone, C. (Bucharest, IFIN-HH) ; Pirovano, E. (Braunschweig, Phys. Tech. Bund.) ; Pomp, S. (Uppsala U.) ; Porras, I. (Granada U.) ; Praena, J. (Granada U.) ; Quesada, J.M. (Seville U.) ; Reifarth, R. (Goethe U., Frankfurt (main)) ; Rochman, D. (PSI, Villigen) ; Romanets, Y. (Lisbon, IST) ; Rubbia, C. (CERN) ; Sabaté-Gilarte, M. (CERN) ; Schillebeeckx, P. (Geel, JRC) ; Schumann, D. (PSI, Villigen) ; Sekhar, A. (Manchester U.) ; Smith, A.G. (Manchester U.) ; Sosnin, N.V. (Edinburgh U.) ; Stamati, M.E. (CERN ; Ioannina U.) ; Sturniolo, A. (INFN, Turin) ; Tagliente, G. (INFN, Bari) ; Tarrío, D. (Uppsala U.) ; Torres-Sánchez, P. (Granada U.) ; Vagena, E. (Ioannina U.) ; Variale, V. (INFN, Bari) ; Vaz, P. (Lisbon, IST) ; Vecchio, G. (INFN, Catania) ; Vescovi, D. (Goethe U., Frankfurt (main)) ; Vlachoudis, V. (CERN) ; Vlastou, R. (Natl. Tech. U., Athens) ; Wallner, A. (HZDR, Dresden) ; Woods, P.J. (Edinburgh U.) ; Wright, T. (Manchester U.) ; Zarrella, R. (INFN, Bologna ; Bologna U.) ; Žugec, P. (Zagreb U., Phys. Dept.)
Publication	2024-04-25
Imprint	2023-11-02
Number of pages	13
In:	Nucl. Instrum. Methods Phys. Res., A 1064 (2024) 169385
DOI	10.1016/j.nima.2024.169385 (publication)
Subject category	nucl-ex ; Nuclear Physics - Experiment ; physics.ins-det ; Detectors and Experimental Techniques
Abstract	One of the critical aspects for the accurate determination of neutron capture cross sections when combining time-of-flight and total energy detector techniques is the characterization and control of systematic uncertainties associated to the measuring devices. In this work we explore the most conspicuous effects associated to harsh count rate conditions: dead-time and pile-up effects. Both effects, when not properly treated, can lead to large systematic uncertainties and bias in the determination of neutron cross sections. In the majority of neutron capture measurements carried out at the CERN n_TOF facility, the detectors of choice are the C$_{6}$D$_{6}$ liquid-based either in form of large-volume cells or recently commissioned sTED detector array, consisting of much smaller-volume modules. To account for the aforementioned effects, we introduce a Monte Carlo model for these detectors mimicking harsh count rate conditions similar to those happening at the CERN n_TOF 20 m fligth path vertical measuring station. The model parameters are extracted by comparison with the experimental data taken at the same facility during 2022 experimental campaign. We propose a novel methodology to consider both, dead-time and pile-up effects simultaneously for these fast detectors and check the applicability to experimental data from $^{197}$Au($n$,$\gamma$), including the saturated 4.9 eV resonance which is an important component of normalization for neutron cross section measurements.
Copyright/License	preprint: (License: CC BY-NC-ND 4.0) publication: © 2024 The Author(s) (License: CC BY-NC-ND 4.0)

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