Sirius (synchrotron light source)
{{Use dmy dates|date=March 2025}}
{{Infobox particle accelerator
| name = Sirius
| image = Ministro_participa_da_inauguração_do_acelerador_de_partículas_Sirius._(30970744907).jpg
| caption = Sirius synchrotron lightsource building completed in November 2018
| type = diffraction-limited storage ring
| beam =
| target =
| energy = 3 GeV
| current = 350 mA (currently 200 mA in top-up mode)
| brightness =
| luminosity =
| length =
| radius =
| circumference = 518,4 m
| location = Campinas
| coordinates = {{coord|22|48|28|S|47|03|09|W|type:landmark|display=inline,title}}
| institution = Laboratório Nacional de Luz Síncrotron
| dates =
| preceded = UVX
| succeeded =
}}
Sirius is a diffraction-limited storage ring synchrotron light source at the Brazilian Synchrotron Light Laboratory (LNLS) in Campinas, São Paulo State, Brazil. It has a circumference of {{convert|518.4|m|ft}}, a diameter of {{convert|165|m|ft}}, and an electron energy of 3 GeV. The produced synchrotron radiation covers the range of infrared, optical, ultraviolet and X-ray light.
Costing R$1.8 billion, it was funded by the Ministry of Science, Technology, Innovation and Communications (Brazil) and the São Paulo Research Foundation. Discussion started in 2008, and initial funding of R$2 million was granted in 2009. Construction started in 2015, and was finished in 2018. The first electron loop around the storage ring was achieved in November 2019.{{Cite web |date=25 November 2019 |title=First electron loop around Sirius' storage ring |url=https://lnls.cnpem.br/news/first-electron-loop-around-sirius-storage-ring/ |access-date=31 July 2023 |website=LNLS}} Its first experiments were made during COVID-19 pandemic at MANACÁ beamline, dedicated to macromolecular crystallography.{{Cite web |date=7 November 2020 |title=First experiments are carried out on Sirius |url=https://lnls.cnpem.br/news/first-experiments-are-carried-out-on-sirius/ |website=LNLS}}
Sirius is the second synchrotron lightsource constructed in Brazil. The first one, UVX, was a second-generation machine operated by LNLS from 1997 to 2019.{{cite web |title=UVX Synchrotron Light Source – LNLS |url=https://lnls.cnpem.br/uvx-en/ |website=lnls.cnpem.br}}
History
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. Construction began in 2014 under the Dilma Rousseff government. Sirius is the second operational particle accelerator in Brazil, the first one being the [https://lnls.cnpem.br/uvx-en/ UVX.].
The first part of the complex was inaugurated on 14 November 2018 by then-president Michel Temer, and included the main building and two of the three accelerators. The second part included the third accelerator, the storage ring and the commissioning of the first beamlines. Sirius currently operates at 100mA in top-up mode{{Cite web |title=Sirius begins operating in top-up mode, ensuring more stable beamlines – LNLS |url=https://lnls.cnpem.br/sirius-updates/sirius-begins-operating-in-top-up-mode-ensuring-more-stable-beamlines/ |access-date=2024-05-29 |website=lnls.cnpem.br}} and has 6 beamlines open to external researchers.
Characteristics
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. The 68,000-square-meter building houses a ring-shaped, circumferential 500-meter facility. 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. Around R$1.8 billion were invested in the project, which makes it the most ambitious scientific project ever made in Brazil.
Beamlines
Currently, Sirius has 9 operational beamlines, 1 in scientific commissioning, 2 in the assembly phase and 1 the design phase.{{Cite web |date=31 July 2023 |title=Sirius Beamlines |url=https://lnls.cnpem.br/beamlines/ |website=LNLS}}
References
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External links
- {{official|https://www.lnls.cnpem.br/sirius-en/}}
{{Synchrotron radiation facilities}}
{{authority control}}
Category:Synchrotron radiation facilities
Category:Science and technology in Brazil
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