[1] Costing R$1.8 billion,[2] it was funded by the Ministry of Science, Technology, Innovation and Communications (Brazil) and the São Paulo Research Foundation.

[5] In 2008, LNLS former director José Antônio Brum asked for a preview of a new accelerator, which was then shown to the minister of science Sérgio Machado Rezende.

The first part of the complex was inaugurated on 14th November 2018 by then-president Michel Temer, and included the main building and two of the three accelerators.

Sirius is used to understand the atomic structure of molecules, which can help in the development of new drugs, new materials used in construction, oil exploration and in many other areas.

To protect people from the radiation released by machine operation, designed to be the most advanced of its kind in the world, the whole is shielded by 1 kilometer of concrete walls.