A5043631131- Particle Accelerators and Free-Electron Lasers
- Superconducting Materials and Applications
- Particle accelerators and beam dynamics
- Advanced X-ray Imaging Techniques
- Non-Destructive Testing Techniques
- Gyrotron and Vacuum Electronics Research
- Enzyme Structure and Function
- Iron oxide chemistry and applications
- Soil and Unsaturated Flow
- Photocathodes and Microchannel Plates
- Advanced Surface Polishing Techniques
- Geophysics and Sensor Technology
- Image and Object Detection Techniques
- Magnetic confinement fusion research
- Scientific Computing and Data Management
- Magnetic Properties and Applications
- Advancements in Photolithography Techniques
- X-ray Spectroscopy and Fluorescence Analysis
Brazilian Center for Research in Energy and Materials
2022-2024
Weatherford College
2022
Brazilian Synchrotron Light Laboratory
2006-2018
An all permanent magnet superbend is proposed for the new Sirius optics and it can now provide hard X-rays in a critical energy of 19 keV. In design, has stronger magnetic peak field 3.18 T composed two low parts designed with transverse gradient on each side high pole. The full joined into single named BC floating pole links three parts. poles, return flux back be adjusted to correct integrated dipole quadrupole components. mechanical assembly, measurements, production strategy will presented.
A Superconducting Wavelength Shifter (SWLS) capable of achieving a peak magnetic field 6.6 T is currently being designed for future hard X-ray beamline Sirius, the new Brazilian Light Source. Due to machine requirements, narrow profile in central pole region (FWHM < 30 mm) constraint electromagnetic design. The superconducting racetrack coils, made NbTi wires, are be conduction cooled with an operating margin above 20% at 5 K. Two designs required, lateral coils 180 turns and 1080 turns,...
The new Brazilian Synchrotron Light Source (Sirius) is under development and will operate at 3 GeV, with 0.5 A emmitance close to 1 nmrad. “Green solutions”, using permanent magnets, are being proposed for the dipoles quadrupoles of storage ring. This an attempt reduce as much possible electrical energy consumption, trying, same time, assure reliability magnets during several years. Results some prototypes already built characterized presented in this report.
A new model of quadrupole composed permanent magnetic material, coils and soft material is proposed for the Brazilian Synchrotron Light Source (Sirius). These quadrupoles must have flexibility about 30% total gradient in order to correct linear effects caused by insertion devices on beam dynamics. This obtained using while magnets are used supply constant gradient.
Sirius is a Synchrotron Light Source Facility based on 4th generation low emittance storage ring that presently under construction in Campinas, Brazil. During the last year, accelerator activities concentrated R&D of various subsystem components. However, number components production or already delivered also increasing according to planning. The building started beginning 2015 and machine commissioning expected start mid 2018. In this paper we report present status project with emphasis...
Sirius is a Synchrotron Light Source Facility based on 4th generation 3 GeV low emittance electron storage ring that under construction in Campinas, Brazil. Presently the main tunnel for accelerators ready to start installations. The Linac was delivered earlier and 150 MeV from SINAP almost commissioning early May. Commissioning of expected by end this year (2018). In paper we briefly review overall project parameters design concepts focus highlights subsystems.
A very precise rotating coil was developed using stretched tungsten wires in a new geometric arrangement for the accurate magnetic characterization of insertion devices (IDs). Many sources errors were analyzed, and procedure to evaluate defects by means dipolar field is presented. Tests performed 2-T planar wiggler, which 2.8 m long, with 180 mm period, Brazilian synchrotron light source (LNLS). The advantages measurement repeatability accuracy are also discussed.
A 4.2-m-long Hall-probe bench was developed for high-precision magnetic characterization of insertion devices at the Brazilian Synchrotron Light Laboratory. In this paper, its mechanical and electrical features are described, as well procedures applied to improve accuracy repeatability. Tests used establish measuring precision were performed in a 2-T planar wiggler, which is 2.8-m long, with periods 180 mm. The obtained fields integrated compared rotating-coil measurements.
Sirius is a 3 GeV synchrotron light source that being built by the Brazilian Synchrotron Light Laboratory (LNLS). The electron storage ring based on modified 5BA cell to achieve bare lattice emittance of 0.27 nm.rad in 518 m circumference contains 20 straight sections alternating 6 and 7 meters length. accommodates thin permanent magnet high field (2 T) dipole center middle bend producing hard X-ray radiation (ec=12 keV) with modest contribution total energy loss. In this paper we discuss...
A cryogen-free 6.6 T Superconducting Wavelength Shifter (SWLS) is currently being designed to produce photons with a critical energy higher than 39 keV for the future hard X-ray beamline of Sirius, new 4th generation Brazilian light source. The magnet based on NbTi coils and holmium poles an operating margin above 20% at 5 K. magnetic gap 7 mm in central pole was required achieve narrow peak field profile (FWHM = 29.8 mm), which did not affect emittance machine. device reuse several parts...
Sirius is a 4th generation light source with sub-nm.rad horizontal emittance currently under commissioning at CNPEM, Brazil. The beamlines will mainly use insertion devices as the of synchrotron light, and some installed central dipole magnets (permanent magnets) 3.2 T. However, there demand for high-energy X-ray tomography beamline that requires photons critical energy higher than 39 keV, which not achieved current dipoles. In this sense, magnet magnetic field 6 T would be great interest. A...
A new rotating coil was developed for precise magnetic characterization of the Brazilian synchrotron light source insertion devices. The first these devices is a 2 tesla planar wiggler with 180 mm period, and subsequent are under construction studies. Mechanical electrical features this technique presented, emphasizing rigidity obtained by fixing on stretched twaron wires. Coil defects, main sources error, also analyzed, as well their means dipolar field. Some results about measurement...
We present the results of commissioning first elliptically polarizing undulator (EPU) to be installed at 1.37 GeV electron storage ring Brazilian synchrotron light source (LNLS). The is designed provide UV and soft X-ray photons from 100 eV up 1 keV with full polarization control. It uses APPLE II design allows for both parallel anti- longitudinal motion its magnet cassettes. including measured orbit tune perturbations fields on stored beam.
We present the results of commissioning a 28-pole 2 T Hybrid Wiggler at electron storage ring Brazilian Synchrotron Light National Laboratory (LNLS). The wiggler will be used mainly for protein crystallography and was optimized production 12 keV photons. describe effects insertion device on lattice, such as correction linear tune-shift perturbations produced by well reduction beam lifetime full energy. Since injection LNLS is performed 500 MeV we also focus non-linearities their impact efficiency.
We describe the high-field (1.0 T) ultra high vacuum (1.6 10- 9 mbar) controllable temperature (8 ºK up to > 350ºK) MCD setup designed and built at LNLS. show, for nanocrystals of Hematite alpha-Fe2O3, illustrative results obtained room low temperature.
The first insertion device built at LNLS was an elliptically polarized undulator, designed to cover the vacuum ultraviolet and soft X-ray spectrum. Its magnetic characterization done using two techniques: Hall probes, for local field measurements, rotating coil, operating in a way similar flip-coil, determine integrated multipoles. Final results phase errors as well procedures used correct multipoles are presented.
The first Delta undulator for Sirius, a 3 GeV <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"><tex-math notation="LaTeX">$4^\mathrm{th}$</tex-math></inline-formula> generation synchrotron light source located in Brazil, is currently being built. It will be the of this type to used storage ring based source. has 1.2 m long pure permanent magnet structure with 21 periods 52.5 mm, 13.6 mm fixed gap and four magneticarrays that can moved...
O presente trabalho faz uma avaliação da técnica de localização espacial um anteparo com abertura circular a partir análise do padrão difração laser em CCD. Com isso, busca-se qualificar alternativa complementar à adotada atualmente, isto é, ao sistema fio vibrante, para os procedimentos alinhamento dos ímãs rede magnética anel armazenador elétrons Projeto Sirius. Às imagens interesse, são aplicados quatro métodos processamento distintos, saber: o cálculo centro massa imagem tons cinza;...