The IFMIF-DONES fusion oriented neutron source: evolution of the design
W. Królas, Á. Ibarra, Frederik Arbeiter, Fernando Arranz, D. Bernardi, Mauro Cappelli, J. Castellanos, T. Dézsi, Hervé Dzitko, P. Favuzza, Á. García, José Carlos González Gutiérrez, M. Lewitowicz, A. Maj, Francisco Martín-Fuertes, G. Miccichè, A. Muñóz, Francesco Saverio Nitti, T. Pinna, Iván Podadera, J. Pons, Yuefeng Qiu, R. Román, M. Toth, A. Zsákai
Abstract
Abstract IFMIF-DONES is a powerful neutron irradiation facility for the study and qualification of materials planned as part of the European roadmap to fusion-generated electricity. Its main goal is to study properties of materials under severe irradiation in a neutron field similar to the one in a fusion reactor first wall. It is a key facility to prepare for the construction of the DEMO power plant envisaged to follow ITER. The decision to start the construction of IFMIF-DONES is expected imminent. In this paper we present and discuss several key technical studies and decisions to improve and optimize the engineering design of IFMIF-DONES which were carried out as part of the activities in the framework of the EUROfusion Early Neutron Source work package (2015–2020). The following topics are discussed in this paper: the new layout of the IFMIF-DONES SRF LINAC accelerator and high-energy beam transport line, 7 Be impurity management approach for the lithium loop, a maintainable test cell concept, a revised layout of the access cell for the remote maintenance operations, and facilities for complementary experiments.