Keyword: scattering
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TUOBM01 ForMAX: A Beamline for Multi-Scale and Multi-Modal Structural Characterisation of Hierarchical Materials experiment, detector, focusing, operation 15
 
  • J.B. González Fernández, V.H. Haghighat, S.A. McDonald, K. Nygård, L.K. Roslund
    MAX IV Laboratory, Lund University, Lund, Sweden
 
  Funding: Knut and Alice Wallenberg Foundation
ForMAX is an advanced beamline at MAX IV Laboratory, enabling multi-scale structural characterisation of hierarchical materials from nm to mm length scales with high temporal resolution. It combines full-field microtomography with small- and wide-angle x-ray scattering (SWAXS) techniques, operating at 8-25 keV and providing a variable beam size. The beamline supports SWAXS, scanning SWAXS imaging, absorption contrast tomography, propagation-based phase contrast tomography, and fast tomography. The experimental station is a versatile in-house design, tailored for various sample environments, allowing seamless integration of multiple techniques in the same experiment. The end station features a nine-meter-long evacuated flight tube with a motorized small-angle x-ray scattering (SAXS) detector trolley. Additionally, a granite gantry enables independent movement of the tomography microscope and custom-designed wide-angle x-ray (WAXS) detector. These features facilitate efficient switching and sequential combination of techniques. With commissioning completed in 2022, ForMAX End Station has demonstrated excellent performance and reliability in numerous high-quality experiments.
 
slides icon Slides TUOBM01 [85.355 MB]  
DOI • reference for this paper ※ doi:10.18429/JACoW-MEDSI2023-TUOBM01  
About • Received ※ 23 October 2023 — Revised ※ 03 November 2023 — Accepted ※ 04 November 2023 — Issued ※ 12 May 2024
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TUPYP023 Design of a Long Versatile Detector Tube System for Pink Beam Small-Angle X-Ray Scattering (SAXS) Beamline at HEPS detector, experiment, vacuum, radiation 64
 
  • Z.Q. Cui, G. Mo, Z.N. Ou, S. Tang, X. Xing, J.C. Zhang
    IHEP, Bejing, People’s Republic of China
 
  The long versatile detector tube system for small-angle X-ray scattering meets the experimental conditions of -5-50° wide-angle X-ray scattering (WAXS), 0.04-6° small-angle X-ray scattering (SAXS) and 0.001-0.1° ultra-small-angle X-ray scattering (USAXS), record the same change process of the same sample, and obtain comprehensive structural information of atomic size, nanometer size and micron size, which can be applied to nanomaterials, mesoporous materials, biological macromolecules, polymers and other fields. The size of the tube system is 26760×1945×2565 mm,and consists of four parts: WAXS device, SAXS device, USAXS device and vacuum chamber. The vacuum chamber is assembled by connecting and assembling parts such as thick and fine pipes, bellows, heads and vacuum valves, with a length of 13775 mm and an inner diameter of 1500mm. The thin pipe is 7740 mm long and has an inner diameter of 300 mm. The design scheme of the tube system is committed to ensuring that the distance between the SAXS detector and the sample is continuously adjustable within the range of 1-13.5 m in vacuum environment, and the straightness of the 13840 mm long track of the SAXS device is better than 1 mm.  
poster icon Poster TUPYP023 [1.737 MB]  
DOI • reference for this paper ※ doi:10.18429/JACoW-MEDSI2023-TUPYP023  
About • Received ※ 02 November 2023 — Revised ※ 03 November 2023 — Accepted ※ 09 November 2023 — Issued ※ 25 January 2024
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WEPPP009 POLAR Synchrotron Diffractometer detector, alignment, synchrotron, simulation 161
 
  • G. Olea, N. Huber, J. Zeeb
    HUBER Diffraktiontechnik GmbH&Co.KG, Rimsting, Germany
 
  A new product for research purposes aiming to work in a synchrotron facility after its upgradation (APS-U) has been recently developed. Based on specific beam characteristics (emittance, coherence, variable polarization) and several X-ray diffraction (XRD) techniques applied (resonant, reflectivity) on single crystal and thin films under extreme conditions (temperature, pressure), the product is expected to fast progress the investigations of magnetic materials at nanoscale level. The dedicated machine (diffractometer) will be in one of the newly constructed experimental enclosure (G) of a main beamline (POLAR) in the 4th (ID-4) sector, serving a large spectrum of investigations for Magnetic Material (MM) group. POLAR-Dm was conceived on a traditional 6C (C-circles) geometry, maintaining the common kinematic structural principle of its family. With the addition of several interchangeable positioning devices (e.g., Euler cradle, air bearings stages, etc) the system is expanding the spectrum of possible investigations, maintaining the precision of new setups. The kinematic, design and precision concepts applied, together with the obtained test results are all in detail presented.
* J. Strempfer et al., Possibilities at Polar beamline with APS-U, 14th Int. Conf. SRI2021, J. Phys., 2380 (2022) 012038
** HUBER Diffractionstechnik GmbH&Co.KG, 2023, www.xhuber.com
 
DOI • reference for this paper ※ doi:10.18429/JACoW-MEDSI2023-WEPPP009  
About • Received ※ 02 November 2023 — Revised ※ 04 November 2023 — Accepted ※ 09 November 2023 — Issued ※ 28 February 2024
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WEPPP016 Mechanical Design of XRS & RIXS Multi-Functional Spectrometer at the High Energy Photon Source photon, synchrotron, synchrotron-radiation, radiation 178
 
  • J.C. Zhang, Z.Y. Guo, X. Jia, S.X. Jin, Z.N. Ou, W.F. Sheng, S. Tang, R.Z. Xu, W. Xu, Y.J. Zhang
    IHEP, Beijing, People’s Republic of China
 
  The integration of an X-ray Raman spectroscopy (XRS) spectrometer and a Resonant Inelastic X-ray scattering (RIXS) spectrometer at HEPS is described. The XRS has 6 regular modular groups and 1 high resolution modular group. In total 90 pieces of spherically bent analyzer crystals are mounted in low vacuum chambers with pressure lower than 100Pa. On the other hand, the RIXS spectrometer possesses one spherically bent analyzer crystal configured in Rowland geometry whose diameter is changeable from 1m to 2m. The scattering X-ray photons transport mostly in helium chamber to reduce absorption by air. The RIXS and the high resolution module can be exchanged when needed. Six air feet are set under the granite plate to unload the weight when the heavy spectrometer is aligned. The natural frequency and statics of the main granite rack were analyzed and optimized to maintain high stability for the HEPS-ID33 beamline at the 4th generation source. A type of compact and cost-effective adjustment gadget for the crystals was designed and fabricated. Economic solutions in selection of motors and sensors and other aspects were adopted for building the large spectrometer like this.  
DOI • reference for this paper ※ doi:10.18429/JACoW-MEDSI2023-WEPPP016  
About • Received ※ 02 November 2023 — Revised ※ 06 November 2023 — Accepted ※ 09 November 2023 — Issued ※ 11 April 2024
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WEPPP049 Designs of Multiple Experimental Models for Pink SAXS Station experiment, detector, radiation, undulator 226
 
  • G. Mo, Z.J. Chen, Z.Q. Cui, Z.H. Li, Y.P. Liu, Y. Tian, Z.H. Wu, X. Xing
    IHEP, Beijing, People’s Republic of China
 
  Pink SAXS (small angle X-ray scattering) station is dedicated to performing scattering experiments. A classical planar undulator is adopted as the beam source. The pink beam from the fundamental radiation of the undulator at the range of 8-12keV will be used directly after reflected by a pure silicon reflector. The high flux pink beam will be used to perform high time-resolution SAXS experiments. Monochromatic beam, which is obtained by a normal horizontal monochromator, also can be used alternately to perform high energy resolution experiments. Monochromatic beam and pink beam can be switched through moving in and out of the monochromator. The scattering background is reduced effectively using three sets of scatterless slits. Three diamond compound refractive lenses with different curvatures are employed to focus the 12keV monochromatic beam at sample position, detector position and infinite position respectively. A totally 24 meters long vacuum detector tube is adopted as SAXS camera. Three vacuum compatibility EIGER detectors are equipped at different positions to collect WAXS, SAXS and USAXS signals respectively. Then simultaneous USAXS/SAXS/WAXS measurement could be performed.  
DOI • reference for this paper ※ doi:10.18429/JACoW-MEDSI2023-WEPPP049  
About • Received ※ 01 November 2023 — Revised ※ 05 November 2023 — Accepted ※ 09 November 2023 — Issued ※ 01 July 2024
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