Commissioning and operation of the Brazilian Synchrotron Light Source

Rodrigues, Amália; Farias, R.H.A.; Ferreira, M. Jamie; Franco, G.S.; Jahnel, L.; Liu, Lin; Lira, A.; Neuenschwander, Regis; Pardine, C.; Rafael, F.S.; Rosa, Angelika Dorothea; Scorzato, C.; Silva, C.E.T. Goncalves da; Silva, A. Romeu da; Tavares, Pedro Fernandes; Wisnivesky, D.; Craievich, Aldo Felix

doi:10.1109/pac.1997.749845

Cited by 12 publications

(10 citation statements)

References 8 publications

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“…The measurements were carried out in XRF station of the D09B‐XRF beamline12 at Brazilian synchrotron facility (LNLS, Campinas, Brazil) 13. The XRF beamline is equipped with a double‐crystal channel‐cut monochromator, the energy resolution of the monochromator is 3 eV at 10 keV using an Si(111) crystal.…”

Section: Measurements and Data Processingmentioning

confidence: 99%

Chemical environment determination of iron oxides using RRS spectroscopy

et al. 2011

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This article presents first results of determination of the oxidation state of several Fe samples by means of resonant Raman scattering spectroscopy (RRS) using monochromatic synchrotron radiation with an energy-dispersive system. Measurements of samples of Fe, FeO, Fe 2 O 3 and Fe 3 O 4 were carried out at the XRF station of the D09B-XRF beamline at Brazilian synchrotron facility (LNLS, Campinas, Brazil). The samples were irradiated with monochromatic photons having energy close and lower than the K absorption edge of iron in order to inspect the RRS emissions. The RRS spectra were analyzed with specific programs for fitting the experimental data to theoretical expressions. Then, residuals were determined in the low-energy side of the RRS peaks. These residuals were treated with Fast Fourier Transform (FFT) smoothing methods taking into account the instrument functions of the detecting system. The residuals show an oscillation pattern that depends on the studied sample, i.e. on the oxidation state of Fe. The changes existing in the RRS structure between Fe and its oxides are clearly discriminated, suggesting chemical environment characterization by RRS spectroscopy using an energy-dispersive system combined with synchrotron radiation.

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Section: Measurements and Data Processingmentioning

confidence: 99%

Chemical environment determination of iron oxides using RRS spectroscopy

et al. 2011

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“…It is possible, however, to further simplify relation (15) by noting that y R sin g and defining p b 21 . We get finally…”

Section: A Extracting the Beam Profile Bordermentioning

confidence: 99%

“…The LNLS UVX electron storage ring [15] (Fig. 3) is a 1.37 GeV machine injected from a 120 MeV linac.…”

Section: A the Lnls Uvx Storage Ringmentioning

confidence: 99%

Measurement of the modulus and phase of the linear coupling coefficient by analysis of the transverse beam profile

Tavares

Xavier

Liu

et al. 1998

Phys. Rev. ST Accel. Beams

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We study the dynamics of transverse oscillations near the linear coupling resonance excited by a pair of skew quadrupoles at the Laboratório Nacional de Luz Síncrotron UVX electron storage ring through the analysis of the beam profile. Transverse coherent oscillations were excited with a fast kicker and the profile of the oscillating beam was observed by focusing visible synchrotron radiation from a bending magnet onto a fast charge-coupled device camera. Using a single resonance approximation, we calculated the border of the time-averaged transverse beam profile as a function of the complex coupling coefficient k, which characterizes the distribution of coupling fields along the storage ring. A leastsquares fit of the calculated beam profile border to the experimentally obtained isointensity contours provided a new method to determine both the modulus and the phase of k. The values obtained for the modulus are in good agreement with those from the conventional normal mode tune separation technique, and the values obtained for the phase of k agree with calculations based on the model lattice and the known skew quadrupole distribution. [S1098-4402(98)

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“…The injector system for the 1.37 electron storage ring at the Brazilian Synchrotron Light Source has evolved considerably since its first commissioning in 1996 [1,2]. The major milestone in injector improvements took place in 2001, when a booster synchrotron [3] was installed allowing the injection energy to be upgraded from 120 MeV (the energy of the beam from the injector LINAC) to 500 MeV.…”

Section: Introductionmentioning

confidence: 99%

Injector improvements at the Brazilian Synchrotron Light Source

Farias

Pardine

Arroyo

et al. 2007

2007 IEEE Particle Accelerator Conference (PAC)

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We present the results of hardware, software and operational improvements implemented at the injector complex of the 1.37 GeV electron storage ring of the Brazilian Synchrotron Light Source (LNLS) with the aim of improving injector stability and reliability, thus reducing the injection time. The improvements include changes to the 120 MeV injector LINAC RF system and high power modulators, injection automation and the implementation of a new procedure for reusing the current at the end of each user´s shifts before injection by ramping the energy back down to 500 MeV (the injection energy) without dumping the beam. All of these changes allowed us to significantly reduce the overall time from the end of a shift to the delivery of beam in the following shift with a positive impact on the reduction of injection thermal transients for the storage ring and beamlines. Further improvements are expected in the near future as a result of planned changes to the injection timing system and of the installation of a recently assembled upgrade of the 500 MeV booster synchrotron RF system.

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Commissioning and operation of the Brazilian Synchrotron Light Source

Cited by 12 publications

References 8 publications

Chemical environment determination of iron oxides using RRS spectroscopy

Chemical environment determination of iron oxides using RRS spectroscopy

Measurement of the modulus and phase of the linear coupling coefficient by analysis of the transverse beam profile

Injector improvements at the Brazilian Synchrotron Light Source

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