Baseline design of a low energy neutron source at ESS-Bilbao

6th Meeting of the Spanish Neutron Scattering Association

Sordo, F.^1,2 ; Fernandez-Alonso, F.^3 ; Gonzalez, Miguel A.^4 ; Ghiglino, A.^1,2 ; Magán, M.^1,2 ; Terrón, S.^1,2 ; Martínez, F.^1,2 ; De Vicente, J.P.^1,2 ; Vivanco, R.^1,2 ; Bermejo, F.J.^1,5 ; Perlado, J.M.^2

Consorcio ESS-Bilbao, Paseo Landabarri 2, Biscay, Leioa

E-48940, Spain^1

Instituto de Fusión Nuclear, José Gutierrez Abascal 2, Madrid

20886, Spain^2

ISIS Facility, Rutherford Appleton Laboratory, Oxfordshire, Chilton, Didcot

OX11 0QX, United Kingdom^3

Institut Laue Langevin, 6 rue Jules Horowitz, Grenoble cedex 9

38042, France^4

Consejo Superior de Investigaciones Cientficas, Instituto de Estructura de la Materia, Serrano 121, Madrid

28006, Spain^5

关键词: Ancillary system;    Beryllium plates;    Condensed matter;    Engineering design;    European spallation sources;    Fast neutron irradiation;    Low-energy neutrons;    Thermal neutrons;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/549/1/012001/pdf
DOI  :  10.1088/1742-6596/549/1/012001

来源: IOP

【 摘 要 】

This article briefly describes the basic design of the ESS-Bilbao neutron target station as well as its expected neutronic performance. The baseline engineering design, associated ancillary systems, and plant layout for the facility is now complete. A rotating target composed of twenty beryllium plates has been selected as the best choice in terms of both neutron yield and engineering complexity. It will provide neutron beams with a source term of 1015n s-1resulting from the direct9Be(p, xn) reaction using a 75 mA proton beam at 50 MeV. The design envisages a target station equipped with two fully optimized moderators capable of withstanding a proton-beam power of 112 kW. This design is flexible enough to accommodate future upgrades in final proton energy. The envisaged neutron-beam brightness will enable several applications, including the use of cold and thermal neutrons for condensed matter research as well as fast-neutron irradiation studies. We close by discussing the role that this facility may play once the European Spallation Source becomes operational in Lund, Sweden.