DONES Systems identification and requirements allocation. (June 2022)

• Record Type: Journal Article
• Authors: Zsákai, A.; Díez, A.; Muñoz, A.; García, M.; Ibarra, A.
• Is Part Of: Nuclear materials and energy. Volume 31(2022)
• Publication Date: 2022-06
• Subjects: Systems engineering -- IFMIF-DONES -- Requirements engineering -- Group-of-systems; Nuclear energy -- Periodicals; Nuclear fuels -- Periodicals; Nuclear reactors -- Materials -- Periodicals; Radioactive substances -- Periodicals; 621.4833
• DOI: 10.1016/j.nme.2022.101199
• Languages: English
• ISSNs: 2352-1791

Abstract

Highlights: Systems identification of IFMIF-DONES for work distribution and responsbility allocation. System-of-Systems to Group-of-Systems type mapping. Alignment of Systems identification and requirement allocation. Abstract: The mission of the DONES program is to develop a database of fusion-like neutron irradiation effects in the materials required for the construction of the Demonstration Fusion Power Reactor (DEMO) for benchmarking of radiation response of materials. In order to do this, the DONES facility will be built to provide a neutron source producing high-energy neutrons at sufficient intensity and irradiation volume. DONES will generate a neutron flux with a broad energy distribution covering the typical neutron spectrum of a (d-t) fusion reactor. This is achieved by utilizing Li(d, xn) nuclear reactions taking place in a liquid Li target when bombarded by a deuteron beam. The energy of the deuterons (40 MeV) and the current of the accelerator (125 mA) have been tuned to maximize the neutron flux to get irradiation conditions comparable to those in the first wall of a fusion power reactor. For the success of this mission, the needs of all the stakeholders shall be very clearly stated, considering the whole lifecycle of the facility. Once the needs are clear, they shall be translated into specific requirements, following a top-down approach, to be allocated to the different systems or groups-of-systems (GoS). To do this, it is essential to properly identify which parts shall be treated as a System or GoS, as they shall be designed accordingly, and the requirements allocated in consequence.