IPAC2021 - List of Authors (Rovigatti de Oliveira, G.R.)

Paper	Title	Page
TUPAB310	Establishing a Metrological Reference Network for the Alignment of Sirius	2214
	H. Geraissate, G.R. Rovigatti de Oliveira LNLS, Campinas, Brazil R. Junqueira Leão CNPEM, Campinas, SP, Brazil
	Sirius is the Brazilian 4th generation synchrotron light source. It consists of three electron accelerators and it has room for up to 38 beamlines. To make the alignment of Sirius components possible, there is a need for a network of points comprising the installation volume, allowing the location of portable coordinate instruments on a common reference frame. This work describes the development of such networks for the whole Sirius facility. The layout of the networks is presented together with the survey strategies. Details are given on how the calculations combined laser trackers and optical level measurements data and how the Earth curvature compensation was performed. A novel laser tracker orientation technique applied for linking networks on different environments is also presented. Finally, the uncertainty estimation for the resulting network and its deformation history is shown.
	Poster TUPAB310 [4.084 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-TUPAB310
About •	paper received ※ 20 May 2021 paper accepted ※ 07 June 2021 issue date ※ 21 August 2021
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

THXB06	Results of the First Alignment Run for Sirius	3728
	R. Junqueira Leão, R. Oliveira Neto CNPEM, Campinas, SP, Brazil H. Geraissate, F. Rodrigues, G.R. Rovigatti de Oliveira LNLS, Campinas, Brazil
	It is widely known that the position of particle accelerator components is critical for its performance. For the latest generation light sources, whose magnetic lattice is optimized for achieving very low emittance, the tolerable misalignments are in the order of a few dozen micrometers. Due to the perimeter of these machines, the requirements push the limits of large-volume dimensional metrology and associated instruments and techniques. Recently a fine alignment campaign of the Sirius accelerators was conducted following the pre-alignment performed during the installation phase. To conform with the strict relative positioning demands, measurement good practices were followed, and several 3D metrology procedures were developed. Also, to improve positioning resolution, high rigidity translation devices were produced. Finally, the special target holders designed as removable fiducials for the magnets were revisited to assure maximum reliability. Data processing algorithms were implemented to evaluate the alignment results in a robust and agile manner. This paper will present the final positioning errors for Sirius magnets with an expression of the estimated uncertainty.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-THXB06
About •	paper received ※ 20 May 2021 paper accepted ※ 02 July 2021 issue date ※ 01 September 2021
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

Paper

Title

Page

Establishing a Metrological Reference Network for the Alignment of Sirius

2214

H. Geraissate, G.R. Rovigatti de Oliveira
LNLS, Campinas, Brazil
R. Junqueira Leão
CNPEM, Campinas, SP, Brazil

Sirius is the Brazilian 4th generation synchrotron light source. It consists of three electron accelerators and it has room for up to 38 beamlines. To make the alignment of Sirius components possible, there is a need for a network of points comprising the installation volume, allowing the location of portable coordinate instruments on a common reference frame. This work describes the development of such networks for the whole Sirius facility. The layout of the networks is presented together with the survey strategies. Details are given on how the calculations combined laser trackers and optical level measurements data and how the Earth curvature compensation was performed. A novel laser tracker orientation technique applied for linking networks on different environments is also presented. Finally, the uncertainty estimation for the resulting network and its deformation history is shown.

Poster TUPAB310 [4.084 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-TUPAB310

About •

paper received ※ 20 May 2021 paper accepted ※ 07 June 2021 issue date ※ 21 August 2021

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

THXB06

Results of the First Alignment Run for Sirius

3728

R. Junqueira Leão, R. Oliveira Neto
CNPEM, Campinas, SP, Brazil
H. Geraissate, F. Rodrigues, G.R. Rovigatti de Oliveira
LNLS, Campinas, Brazil

It is widely known that the position of particle accelerator components is critical for its performance. For the latest generation light sources, whose magnetic lattice is optimized for achieving very low emittance, the tolerable misalignments are in the order of a few dozen micrometers. Due to the perimeter of these machines, the requirements push the limits of large-volume dimensional metrology and associated instruments and techniques. Recently a fine alignment campaign of the Sirius accelerators was conducted following the pre-alignment performed during the installation phase. To conform with the strict relative positioning demands, measurement good practices were followed, and several 3D metrology procedures were developed. Also, to improve positioning resolution, high rigidity translation devices were produced. Finally, the special target holders designed as removable fiducials for the magnets were revisited to assure maximum reliability. Data processing algorithms were implemented to evaluate the alignment results in a robust and agile manner. This paper will present the final positioning errors for Sirius magnets with an expression of the estimated uncertainty.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-THXB06

About •

paper received ※ 20 May 2021 paper accepted ※ 02 July 2021 issue date ※ 01 September 2021

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)