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miniBELEN: a modular neutron counter for (a, n) reactions Mont i Geli, Nil Tarifeño Saldivia, Ariel Esteban Fraile, L. M. Viñals Onsens, Silvia Perea Martínez, Ángel Pallàs i Solís, Max Cortés Rossell, Guillem Pere Nacher González, Enrique Taín Enríquez, José Luis Alcayne Aicua, Víctor Algora Wesolowsk, Alejandro Balibrea Correa, Javier Benito García, Jaime García Borge, María José Calviño Tavares, Francisco Blas del Hoyo, Alfredo de Universitat Politècnica de Catalunya. Doctorat en Enginyeria Nuclear i de les Radiacions Ionitzants Universitat Politècnica de Catalunya. Departament de Física Universitat Politècnica de Catalunya. ANT - Advanced Nuclear Technologies Research Group Àrees temàtiques de la UPC::Física Nuclear physics Neutrons Nuclear reactions Física nuclear Neutrons Reaccions nuclears miniBELEN is a modular and transportable neutron moderated counter with a nearly flat neutron detection efficiency up to 10 MeV. Modularity implies that the moderator can be reassembled in different ways in order to obtain different types of response. The detector has been developed in the context of the Measurement of Alpha Neutron Yields (MANY) collaboration, which is a scientific effort aiming to carry out measurements of (a, n) production yields, reaction cross-sections and neutron energy spectra. In this work we present and discuss several configurations of the miniBELEN detector. The experimental validation of the efficiency calculations using 252Cf sources and the measurement of the 27Al(a, n) 30P reaction is also presented. This work has been supported by the Spanish Ministerio de Economía y Competitividad under grants FPA2017-83946- C2-1 & C2-2 and PID2019-104714GB-C21 & C22, the Generalitat Valenciana Grant PROMETEO/2019/007, both cofounded by FEDER (EU), and the SANDA project funded under H2020-EURATOM-1.1 Grant No. 847552. The authors acknowledge the support from Centro de Microanálisis de Materiales (CMAM) - Universidad Autónoma de Madrid, for the beam time proposal (Comissioning of neutron detector systems for (a,݊n) reaction measurements) with code P01156, and its technical staff for their contribution to the operation of the accelerator. Article signat per 41 autors/es: N. Mont-Geli, A. Tarifeño-Saldivia, L.M. Fraile, S. Viñals, A. Perea, M. Pallàs, G. Cortés, E. Nácher, J.L. Tain, V. Alcayne, A. Algora, J. Balibrea-Correa, J. Benito, M.J.G. Borge, J.A. Briz, F. Calviño, D. Cano-Ott, A. De Blas, C. Domingo-Pardo, B. Fernández, R. Garcia, G. García, J. Gómez-Camacho, E.M. González-Romero, C. Guerrero, J. Lerendegui-Marco, M. Llanos, T. Martínez, E. Mendoza, J.R. Murias, S.E.A. Orrigo, A. Pérez de Rada, V. Pesudo, J. Plaza, J.M. Quesada, A. Sánchez, V. Sánchez-Tembleque, R. Santorelli, O. Tengblad, J.M. Udías and D. Villamarín. Postprint (published version) 2023-05-26 Article Mont i, N. [et al.]. miniBELEN: a modular neutron counter for (a, n) reactions. "EPJ web of conferences", 26 Maig 2023, vol. 284, núm. article 06004. 2100-014X https://hdl.handle.net/2117/394217 10.1051/epjconf/202328406004 eng https://www.epj-conferences.org/articles/epjconf/abs/2023/10/epjconf_nd2023_06004/epjconf_nd2023_06004.html info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/FPA2017-83946-C2-1-P/ES/EXPERIMENTOS DE ESTRUCTURA NUCLEAR Y ASTROFISICA CON HACES RADIOACTIVOS Y NEUTRONES Y APLICACIONES/ info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/FPA2017-83946-C2-2-P/ES/EXPERIMENTOS DE ESTRUCTURA NUCLEAR Y ASTROFISICA CON HACES RADIOACTIVOS Y NEUTRONES Y APLICACIONES/ info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PID2019-104714GB-C21/ES/ESTRUCTURA NUCLEAR, ASTROFISICA Y APLICACIONES - IFIC/ info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PID2019-104714GB-C22/ES/NUCLEAR STRUCTURE, ASTROPHYSICS AND APPLICATIONS AT UPC/ info:eu-repo/grantAgreement/EC/H2020/847552/EU/Supplying Accurate Nuclear Data for energy and non-energy Applications/SANDA http://creativecommons.org/licenses/by/4.0/ Open Access Attribution 4.0 International 4 p. application/pdf EPJ Web of Conferences