Author: Ferracioli, F.
Paper Title Page
THOAM05 Modeling the Disturbances and the Dynamics of the New Micro CT Station for the MOGNO Beamline at Sirius/LNLS 256
 
  • G.S. Baldon, F. Ferracioli, R.R. Geraldes, G.B.Z.L. Moreno, G.S. de Albuquerque
    LNLS, Campinas, Brazil
 
  Funding: Ministry of Science, Technology and Innovation (MCTI)
At the 4th generation synchrotron laboratory Sirius at the Brazilian Synchrotron Light Laboratory (LNLS), MOGNO is a high energy imaging beamline*, whose Nano Computed Tomography (CT) station is already in operation. The beamline’s 120x120 nm focus size, 3.1x3.1 mrad beam divergence, and 9·1011 ph/s flux at 22-67 keV energy, allows experiments with better temporal and spatial resolution than lower energy and lower stability light sources. To further utilize its potential, a new Micro CT station is under development to perform experiments with 0.5-55 um resolution, and up to 4 Hz sample rotation. To achieve this, a model of the disturbances affecting the station was developed, which comprised: i) the characterization and simulation of disturbances, such as rotation forces; and ii) the modeling of the dynamics of the Micro-station. The dynamic model was built with the in-house developed Dynamic Error Budgeting Tool**, which uses dynamic substructuring to model 6 degrees of freedom rigid body systems. This work discusses the tradeoffs between rotation-related parameters affecting the sample to optics stability and the experiment resolution in the frequency domain integrated up to 2kHz.
* N. L. Archilha, et al. 2022, J. Phys.: Conf. Ser. 2380 012123.
** R. R. Geraldes et al. 2022, Precision Engineering Vol. 77, 90-103.
 
slides icon Slides THOAM05 [11.814 MB]  
DOI • reference for this paper ※ doi:10.18429/JACoW-MEDSI2023-THOAM05  
About • Received ※ 02 November 2023 — Revised ※ 03 November 2023 — Accepted ※ 08 November 2023 — Issued ※ 04 March 2024
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