Radiation safety system for SPIDER neutral beam accelerator

S. Sandri, A. Coniglio, M. D'Arienzo, C. Poggi

Research output: Contribution to conferencePaper

Abstract

SPIDER (Source for Production of Ion of Deuterium Extracted from RF Plasma only) and MITICA (Megavolt ITER Injector Concept Advanced) are the ITER neutral beam injector (NBI) testing facilities of the PRIMA (Padova Research Injector Megavolt Accelerated) Center. Both injectors accelerate negative deuterium ions with a maximum energy of 1 MeV for MITICA and 100 keV for SPIDER with a maximum beam current of 40 A for both experiments. The SPIDER facility is classified in Italy as a particle accelerator. At present, the design of the radiation safety system for the facility has been completed and the relevant reports have been presented to the Italian regulatory authorities. Before SPIDER can operate, approval must be obtained from the Italian Regulatory Authority Board (IRAB) following a detailed licensing process. In the present work, the main project information and criteria for the SPIDER injector source are reported together with the analysis of hypothetical accidental situations and safety issues considerations. Neutron and photon nuclear analysis is presented, along with special shielding solutions designed to meet Italian regulatory dose limits. The contribution of activated corrosion products (ACP) to external exposure of workers has also been assessed. Nuclear analysis indicates that the photon contribution to worker external exposure is negligible, and the neutron dose can be considered by far the main radiation protection issue. Our results confirm that the injector has no important radiological impact on the population living around the facility. © 2011 American Institute of Physics.
Original languageEnglish
DOIs
Publication statusPublished - 2011
Externally publishedYes
Event11th International Conference on Applications of Nuclear Techniques - , Greece
Duration: 1 Jan 2011 → …

Conference

Conference11th International Conference on Applications of Nuclear Techniques
CountryGreece
Period1/1/11 → …

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All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Cite this

Sandri, S., Coniglio, A., D'Arienzo, M., & Poggi, C. (2011). Radiation safety system for SPIDER neutral beam accelerator. Paper presented at 11th International Conference on Applications of Nuclear Techniques, Greece. https://doi.org/10.1063/1.3665342