MEDSI2023 - List of Authors (Felcsuti, G.)

Paper	Title	Page
WEPPP030	MAX IV –- MicroMAX Detector Stage	193
	S.M. Benedictsson, M.A. Al-Najdawi, O. Aurelius, G. Felcsuti, J. Lidón-Simon, M. Milas, T. Ursby MAX IV Laboratory, Lund University, Lund, Sweden
	Funding: "Funded by Novo Nordisk Fonden for the MicroMAX project, grant number NNF17CC0030666" The MicroMAX beamline at MAX IV Laboratory will employ two detectors to be used independently and move along the beam depending on the diffraction target resolution, starting close to the sample hanging partially over the sample table. The X-ray beam can be deflected by Kirkpatrick-Baez (KB) mirrors in the horizontal and vertical directions or pass undeflected. The MAX IV Design office designed a detector stage as an in-house project based on the ALBA table skin concept [1] to switch between the two detectors and accurately position the selected detector, either with or without the KB mirrors. To achieve stability and precision during translations, a large granite block is used, as well as preloaded linear and radial guides, and preloaded ball screws with stepper motors and, in most cases, a gear box. Flexures are used to allow linear motion’s pitch and yaw angles. The various motions are layered so that alignment to the beam axis can be done first, and then sample-to-detector distance can be adjusted independently. A Finite Element Analysis (FEA) were performed to achieve a stable design and measurements of resonance frequencies on the finalized stage were done to verify it. * Colldelram C., Rudget C., Nikitina L. October 2011. ALBA XALOC beamline diffractometer table skin concept design. Diamond Light Source Proceedings.
	Poster WEPPP030 [58.619 MB]
DOI •	reference for this paper ※ doi:10.18429/JACoW-MEDSI2023-WEPPP030
About •	Received ※ 25 October 2023 — Revised ※ 04 November 2023 — Accepted ※ 09 November 2023 — Issued ※ 08 January 2024
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

THOBM01	Structural Dynamic Testing and Design Evaluation of the Formax Detector Gantry
	G. Felcsuti, J.B. González Fernández MAX IV Laboratory, Lund University, Lund, Sweden
	ForMAX, a new beamline at MAX IV, offers multi-scale structural characterization of hierarchical materials from nm to mm length scales by combining full-field microtomography and small- and wide-angle x-ray scattering (SWAXS) techniques. The sample position features a two-meter-high granite gantry that enables independent movement of the tomography microscope and wide-angle x-ray (WAXS) detector in and out of the x-ray beam, as well as along the beam on motorized floor rails. Ensuring optimal experimental performance requires high stiffness and low vibration amplitudes which are challenging goals to achieve with such slender structures. This study focuses on the structural dynamics of the gantry and summarizes the verifications tests that were conducted to assess the structure¿s sensitivity to ambient disturbances. Experimental modal analysis was employed to investigate the structural dynamics of the gantry and the obtained mode shapes are compared to the finite element calculations based on the Modal Assurance Criterion (MAC). Special attention is paid to the pneumatic brake on the detector’s floor rails that was implemented to increase the lowest eigenfrequency of the gantry.
	Slides THOBM01 [3.834 MB]
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

Paper

Title

Page

MAX IV –- MicroMAX Detector Stage

193

S.M. Benedictsson, M.A. Al-Najdawi, O. Aurelius, G. Felcsuti, J. Lidón-Simon, M. Milas, T. Ursby
MAX IV Laboratory, Lund University, Lund, Sweden

Funding: "Funded by Novo Nordisk Fonden for the MicroMAX project, grant number NNF17CC0030666"
The MicroMAX beamline at MAX IV Laboratory will employ two detectors to be used independently and move along the beam depending on the diffraction target resolution, starting close to the sample hanging partially over the sample table. The X-ray beam can be deflected by Kirkpatrick-Baez (KB) mirrors in the horizontal and vertical directions or pass undeflected. The MAX IV Design office designed a detector stage as an in-house project based on the ALBA table skin concept [1] to switch between the two detectors and accurately position the selected detector, either with or without the KB mirrors. To achieve stability and precision during translations, a large granite block is used, as well as preloaded linear and radial guides, and preloaded ball screws with stepper motors and, in most cases, a gear box. Flexures are used to allow linear motion’s pitch and yaw angles. The various motions are layered so that alignment to the beam axis can be done first, and then sample-to-detector distance can be adjusted independently. A Finite Element Analysis (FEA) were performed to achieve a stable design and measurements of resonance frequencies on the finalized stage were done to verify it.
* Colldelram C., Rudget C., Nikitina L. October 2011. ALBA XALOC beamline diffractometer table skin concept design. Diamond Light Source Proceedings.

Poster WEPPP030 [58.619 MB]

DOI •

reference for this paper ※ doi:10.18429/JACoW-MEDSI2023-WEPPP030

About •

Received ※ 25 October 2023 — Revised ※ 04 November 2023 — Accepted ※ 09 November 2023 — Issued ※ 08 January 2024

Cite •

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

THOBM01

Structural Dynamic Testing and Design Evaluation of the Formax Detector Gantry

G. Felcsuti, J.B. González Fernández
MAX IV Laboratory, Lund University, Lund, Sweden

ForMAX, a new beamline at MAX IV, offers multi-scale structural characterization of hierarchical materials from nm to mm length scales by combining full-field microtomography and small- and wide-angle x-ray scattering (SWAXS) techniques. The sample position features a two-meter-high granite gantry that enables independent movement of the tomography microscope and wide-angle x-ray (WAXS) detector in and out of the x-ray beam, as well as along the beam on motorized floor rails. Ensuring optimal experimental performance requires high stiffness and low vibration amplitudes which are challenging goals to achieve with such slender structures. This study focuses on the structural dynamics of the gantry and summarizes the verifications tests that were conducted to assess the structure¿s sensitivity to ambient disturbances. Experimental modal analysis was employed to investigate the structural dynamics of the gantry and the obtained mode shapes are compared to the finite element calculations based on the Modal Assurance Criterion (MAC). Special attention is paid to the pneumatic brake on the detector’s floor rails that was implemented to increase the lowest eigenfrequency of the gantry.

Slides THOBM01 [3.834 MB]

Cite •

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