Author: Bueno, C.S.N.C.
Paper Title Page
MOPB06 Installation and Commissioning of the Exactly-Constrained X-Ray Mirror Systems for Sirius/LNLS 33
 
  • V.B. Zilli, C.S.N.C. Bueno, G.V. Claudiano, R.R. Geraldes, G.N. Kontogiorgos, F.R. Lena, S.A.L. Luiz, G.B.Z.L. Moreno, A.C. Pinto, G.L.M.P. Rodrigues, M.S. Souza, L.M. Volpe
    LNLS, Campinas, Brazil
 
  Funding: Ministry of Science, Technology and Innovation (MCTI)
Innovative exactly-constrained thermo-mechanical de-signs for beamline X-ray mirrors have been developed since 2017 at the 4th-generation Sirius Light Source at the Brazilian Synchrotron Light Laboratory (LNLS). Due to the specific optical layouts of the beamlines, multiple systems cover a broad range of characteristics, including: power management from a few tens of mW to tens of W, via passive room-temperature operation, water cooling or indirect cryocooling using copper braids; mirror sizes ranging from 50 mm to more than 500 mm; mirrors with single or multiple optical stripes, with and without coat-ings; and internal mechanics with one or two degrees of freedom for optimized compromise between alignment features, with sub-100-nrad resolution, and high dynamic performance, with first resonances typically above 150 Hz. Currently, nearly a dozen of these in-house mirror systems is operational or in commissioning at 5 beam-lines at Sirius: MANACÁ, CATERETÊ, CARNAÚBA, EMA and IPÊ, whereas a few more are expected by the end of 2021 with the next set of the forthcoming beam-lines. This work highlights some of the design variations and describes in detail the workflow and the lessons learned in the installation of these systems, including: modal and motion validations, as well as cleaning, as-sembling, transportation, metrology, fiducialization, alignment, baking and cooling. Finally, commissioning results are shown for dynamic and thermal stabilities, and for optical performances.
 
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poster icon Poster MOPB06 [1.959 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2020-MOPB06  
About • paper received ※ 12 August 2021       paper accepted ※ 13 October 2021       issue date ※ 07 November 2021  
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MOPB08 Vibration Assessment at the CARNAÚBA Beamline at Sirius/LNLS 37
 
  • C.S.N.C. Bueno, F.A. Borges, G.R.B. Ferreira, R.R. Geraldes, L.M. Kofukuda, M.A.L. Moraes, G.B.Z.L. Moreno, D.V. Rocha e Silva, M.H.S. Silva, H.C.N. Tolentino, L.M. Volpe, V.B. Zilli, G.S. de Albuquerque
    LNLS, Campinas, Brazil
 
  Funding: Ministry of Science, Technology and Innovation (MCTI)
CARNAÚBA (Coherent X-Ray Nanoprobe Beamline) is the longest beamline at Sirius Light Source at the Brazilian Synchrotron Light Laboratory (LNLS), working in the energy range between 2.05 and 15 keV and hosting two stations: the sub-microprobe TARUMÃ, with coherent beam size varying from 550 to 120 nm; and the nanoprobe SAPOTI, with coherent beam size varying from 150 to 30 nm. Due to the long distances from the insertion device to the stations (136 and 143 m) and the extremely small beam sizes, the mechanical stability of all opto-mechanical systems along the facility is of paramount importance. In this work we present a comprehensive set of measurements of both floor stability and modal analyses for the main components, including: two side-bounce mirror systems; the four-crystal monochromator; the Kirkpatrick-Baez (KB) focalizing optics; and the station bench and the sample stage at TARUMÃ. To complement the components analyses, we also present synchronized long-distance floor acceleration measurements that make it possible to evaluate the relative stability through different floor slabs: the accelerator slab, over which the insertion device and first mirror are installed; experimental hall slab, which accommodates the second mirror; and the slabs in satellite building, consisting of three inertial blocks lying over a common roller-compacted concrete foundation, the first with the monochromator and the remaining ones with an station each. In addition to assessing the stability across this beamline, this study benchmarks the in-house design of the recently-installed mirrors, monochromators and end-stations.
 
poster icon Poster MOPB08 [3.006 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2020-MOPB08  
About • paper received ※ 29 July 2021       paper accepted ※ 16 September 2021       issue date ※ 09 November 2021  
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TUOB01 Exactly-constrained KB Mirrors for Sirius/LNLS Beamlines: Design and Commissioning of the TARUMÃ Station Nanofocusing Optics at CARNAÚBA Beamline 111
 
  • G.B.Z.L. Moreno, C.S.N.C. Bueno, R.R. Geraldes, F.R. Lena, S.A.L. Luiz, E.O. Pereira, H.C.N. Tolentino, Y.R. Tonin, W.H. Wilendorf
    LNLS, Campinas, Brazil
 
  Funding: Ministry of Science, Technology and Innovation (MCTI)
Next-generation nanoprobes, empowered by diffraction-limited storage rings, as Sirius/LNLS, present high-performance requirements aiming at high spatial resolution and throughput. For the focusing optics, this means assuring a small and non-astigmatic probe, high flux density, and remarkably high position stability, while also preserving beam wavefront. At stations further dedicated to spectromicroscopy and in-situ experiments, these requirements add up to having achromatic design and suitable working distance, respectively. In this way, Kirkpatrick-Baez (KB) mirrors have been chosen as the most appropriate solution for Sirius focusing optics. At TARUMÃ*, the first delivered nanoprobe at Sirius, the KB focuses the beam down to a 120 nm spot size (>8 keV) with a 440 mm working distance. This brought the requirements on the mirror’s angular stability to less than 10 nrad RMS, surface quality to single-digit nanometers, and alignment tolerances to the range of hundreds of nrad, which can be even tighter for other nanoprobes. Such specifications are particularly challenging regarding clamping, vibration, and thermal expansion budgets, even testing optical metrology limits during alignment and validation phases. The resulting KB mechanism is an opto-mechanical system with an exactly-constrained, deterministic design**, and suspension modes well above 250 Hz, sufficiently coupling optics to sample in the same 6-DoF base. It provides low-order aberration corrections by single degree-of-freedom alignment with piezo actuators, while higher order aberrations from clamping and thermal deformations are mitigated by gluing each mirror to flexure-based mounting frames. This contribution presents the design, assembly, and commissioning of the KB system at TARUMÃ as a reference case.
*Tolentino, H.C.N., et al. "TARUMÃ station for the CARNAÚBA beamline at SIRIUS/LNLS" SPIE 11112 19
**Geraldes, R.R., et al. "The Design of Exactly-constrained X-ray Mirror Systems for Sirius." MEDSI18
 
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slides icon Slides TUOB01 [5.780 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2020-TUOB01  
About • paper received ※ 25 July 2021       paper accepted ※ 17 September 2021       issue date ※ 06 November 2021  
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WEPB13 Design and Commissioning of the TARUMÃ Station at the CARNAÚBA Beamline at Sirius/LNLS 292
 
  • R.R. Geraldes, C.S.N.C. Bueno, L.G. Capovilla, D. Galante, L.C. Guedes, L.M. Kofukuda, G.N. Kontogiorgos, F.R. Lena, S.A.L. Luiz, G.B.Z.L. Moreno, I.T. Neckel, C.A. Perez, A.C. Piccino Neto, A.C. Pinto, C. Sato, A.P.S. Sotero, V.C. Teixeira, H.C.N. Tolentino, W.H. Wilendorf, J.L. da Silva
    LNLS, Campinas, Brazil
 
  Funding: Ministry of Science, Technology and Innovation (MCTI)
TARUMÃ is the sub-microprobe station of the CARNAÚBA (Coherent X-Ray Nanoprobe Beamline) beamline at Sirius Light Source at the Brazilian Synchrotron Light Laboratory (LNLS). It has been designed to allow for simultaneous multi-analytical X-ray techniques, including diffraction, spectroscopy, fluorescence and luminescence and imaging, both in 2D and 3D. Covering the energy range from 2.05 to 15 keV, the fully-coherent monochromatic beam size varies from 550 to 120 nm after the achromatic KB (Kirkpatrick-Baez) focusing optics, granting a flux of up to 1e11ph/s/100mA at the probe for high-throughput experiments with flyscans. In addition to the multiple techniques available at TARUMÃ, the large working distance of 440 mm after the ultra-high vacuum (UHV) KB system allows for another key aspect of this station, namely, a broad range of decoupled and independent sample environments. Indeed, exchangeable modular setups outside vacuum allow for in situ, in operando, cryogenic and/or in vivo experiments, covering research areas in biology, chemistry, physics, geophysics, agriculture, environment and energy, to name a few. An extensive systemic approach, heavily based on precision engineering concepts and predictive design, has been adopted for first-time-right development, effectively achieving altogether: the alignment and stability requirements of the large KB mirrors with respect to the beam and to the sample*; and the nanometer-level positioning, flyscan, tomographic and setup modularity requirements of the samples. This work presents the overall station architecture, the key aspects of its main components, and the first commissioning results.
* G.B.Z.L. Moreno et al. "Exactly constrained KB Mirrors for Sirius/LNLS Beamlines: Design and Commissioning of the TARUMÃ Station Nanofocusing Optics at the CARNAÚBA Beamline", presented at MEDSI’20, paper TUOB01, this conference.
 
poster icon Poster WEPB13 [2.936 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2020-WEPB13  
About • paper received ※ 25 July 2021       paper accepted ※ 28 September 2021       issue date ※ 30 October 2021  
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WEPC02 A Cryogenic Sample Environment for the TARUMÃ Station at the CARNAÚBA Beamline at Sirius/LNLS 306
 
  • F.R. Lena, C.S.N.C. Bueno, F.H. Cardoso, J.C. Carvalho, M.M. Donatti, R.R. Geraldes, L.M. Kofukuda, L.S. Perissinotto, E. Piragibe, C. Sato, H.C.N. Tolentino, W.H. Wilendorf
    LNLS, Campinas, Brazil
 
  Funding: Ministry of Science, Technology, and Innovation (MCTI)
TARUMÃ is the sub-microprobe station of CAR-NAÚBA (Coherent X-Ray Nanoprobe Beamline) at Sirius at the Brazilian Synchrotron Light Laboratory (LNLS). Covering the tender-to-hard energy range from 2.05 to 15 keV with achromatic fixed-shape optics, the fully coherent submicron focused beam can be used for multiple simultaneous advancedμand nanoscale X-ray techniques that include ptychography coherent diffraction imaging (ptycho-CDI), absorption spectroscopy (XAS), diffraction (XRD), fluorescence (XRF) and luminescence (XEOL). Among the broad range of materials of interest, studies of light elements present in soft tissues and other biological systems put TARUMÃ in a unique position in the Life and Environmental Sciences program at LNLS. Yet, to mitigate the detrimental effect of the high photon flux of the focused beam due to radiation damage, cryocooling may be required. Here we present the design and first results of a novel open-atmosphere cryogenic system for online sample conditioning down to 110 K. The high-stiffness and thermally-stable sample holder follows the predictive design approach based on precision engineering principles to preserve the nanometer-level positioning requirements, whereas a commercial nitrogen blower is used with a cold gas flow exhaustion system that has been developed in order to avoid unwanted cooling of surrounding parts and water condensation or icing.
 
poster icon Poster WEPC02 [2.172 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2020-WEPC02  
About • paper received ※ 29 July 2021       paper accepted ※ 17 October 2021       issue date ※ 30 October 2021  
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