| Paper | Title | Page |
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| WEOBM01 | Challenges and Solutions for the Mechanical Design of SOLEIL-II | 133 |
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| The Synchrotron SOLEIL is a large-scale research facility in France that provides synchrotron radiation from terahertz to hard X-rays for various scientific applications. To meet the evolving needs of the scientific community and to remain competitive with other European facilities, SOLEIL has planned an upgrade project called SOLEIL-II. The project aims to reconstruct the storage ring as a Diffraction Limited Storage Ring (DLSR) with a record low emittance which will enable nanometric resolution. The mechanical design of the upgrade project involves several challenges such as the integration of new magnets, vacuum chambers, insertion devices and beamlines in the existing infrastructure, the optimization of the alignment and stability of the components, and the minimization of the downtime during the transition from SOLEIL to SOLEIL-II. The mechanical design is mainly based on extensive simulations, prototyping and testing to ensure the feasibility, reliability, and performance of several key elements. This abstract presents an overview of the mechanical design concepts and solutions adopted for the SOLEIL-II project. | ||
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Slides WEOBM01 [8.729 MB] | |
| DOI • | reference for this paper ※ doi:10.18429/JACoW-MEDSI2023-WEOBM01 | |
| About • | Received ※ 25 September 2023 — Revised ※ 04 November 2023 — Accepted ※ 08 November 2023 — Issued ※ 03 April 2024 | |
| Cite • | reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml) | |
| WEOBM02 | Development of the Bent Focusing Mirror in HEPS from Design to Test | 136 |
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| The focusing mirrors are important for each beamline in the 4th generation photon source. One bent focusing face-down mirror in HEPS is taken for an example to be introduced from the design to the test. The effect of the gravity of the mirror is considered in the design. Moreover, for the sake of the compromise between the processing and the precision, the polygonal structure is adopted. Also, the iteration of the solution is improved to increase the design efficiency. The results reveal that the theoretical precision of the mirror after bending can reach less than 100 nrad RMS. In the aspect of the mechanics, the scheme of four roller bender comes out to avoid the parasitic moment, and the movable component in the bender are all coated with the MoS2. As the type of the measurement is facing side which is different from the type of the actual condition, the effect of the gravity must be included in the metrology results. In the meantime, the stability and the repeatability are also measured. The result can be converged to around 200 nrad RMS, which is less than the required error. The stability, ¿R/R, can be constrained under the 0.6%, showing the outstanding performance. | ||
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Slides WEOBM02 [3.638 MB] | |
| DOI • | reference for this paper ※ doi:10.18429/JACoW-MEDSI2023-WEOBM02 | |
| About • | Received ※ 25 October 2023 — Revised ※ 05 November 2023 — Accepted ※ 07 November 2023 — Issued ※ 16 April 2024 | |
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| WEOBM03 | The Design and Progress of the Network and Computing System for HEPS | 139 |
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| The 14 beamlines for the phase I of High Energy Photon Source(HEPS) will produces more than 300PB/year raw data. Efficiently storing, analyzing, and sharing this huge amount of data presents a significant challenge for HEPS. HEPS Computing and Communication System(HEPSCC), also called HEPS Computing Center, is an essential work group responsible for the IT R&D and services for the facility, including IT infrastructure, network, computing, analysis software, data preservation and management, public services etc. Aimed at addressing the significant challenge of large data volume, HEPSCC has designed and established a network and computing system, making great progress over the past two years. | ||
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Slides WEOBM03 [2.921 MB] | |
| DOI • | reference for this paper ※ doi:10.18429/JACoW-MEDSI2023-WEOBM03 | |
| About • | Received ※ 27 October 2023 — Revised ※ 06 November 2023 — Accepted ※ 09 November 2023 — Issued ※ 09 December 2023 | |
| Cite • | reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml) | |
| WEOBM04 | Advancing Simulation Capabilities at European XFEL: A Multidisciplinary Approach | 142 |
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| At European XFEL, computational techniques such as FEA and CFD are widely applied in various scientific and engineering fields. In this contribution, a selection of multi-physics and multi-scaled models using FEA tools are presented, which virtually replicate the interaction process of XFEL beam with different materials, taking into consideration heat transfer, structural deformation and phase transition. To gain comprehensive insights into the fluid behaviors and performance of the detector cooling system and liquid sample delivery system, parametric studies are conducted using CFD simulation code FLUENT. Furthermore, a realistic simulation requires a secured process of Verification and Validation of the computational model. Specific guides and standards need to be followed to ensure the credibility and accuracy of the simulation results. Additionally, the FAIR principle for simulation data analysis is introduced at European XFEL. Based on reliable simulation data and real-time sensing data, the concept of digital twin will be integrated into the simulation framework, serving as a new safety constraint for monitoring and optimizing of the facility operation. | ||
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Slides WEOBM04 [3.271 MB] | |
| DOI • | reference for this paper ※ doi:10.18429/JACoW-MEDSI2023-WEOBM04 | |
| About • | Received ※ 20 November 2023 — Revised ※ 22 November 2023 — Accepted ※ 16 July 2024 — Issued ※ 18 July 2024 | |
| Cite • | reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml) | |
| WEOBM05 | Thermal Calculation and Testing of SLS 2.0 Crotch Absorbers | 145 |
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| The storage ring of SLS2.0 based on a multibend achromat lattice will have the maximum electron energy of 2.7 GeV. The synchrotron radiation emitted by bending magnets, except for a small portion designated to beamlines, will be dissipated by crotch absorbers to protect downstream vacuum elements. SLS2.0 crotch absorbers are designed to have two water-cooled, toothed jaws made of Glidcop to dissipate a maximum heat power of 6 kW. Finite element analysis has been conducted to validate the thermal and mechanical strength of the absorbers’ mechanical design. A conjugate heat transfer (CHT) simulation, utilizing direct coupled solid and fluid zones with Computational Fluid Dynamics (CFD) software ANSYS Fluent, was performed to verify the water cooling concept. Furthermore, a prototype absorber underwent testing in an e-beam welding chamber, where the temperatures of the absorber and cooling water were measured and compared against calculated values. The test results not only confirmed the absorber’s ability to dissipate the specified heat load but also validated the thermal modelling methods. This presentation will focus on aspects of numerical simulation and thermal testing. | ||
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Slides WEOBM05 [5.159 MB] | |
| DOI • | reference for this paper ※ doi:10.18429/JACoW-MEDSI2023-WEOBM05 | |
| About • | Received ※ 25 October 2023 — Revised ※ 04 November 2023 — Accepted ※ 08 November 2023 — Issued ※ 12 March 2024 | |
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WEOBM06 |
Extension of the IXS High Resolution Monochromator for the RIXS experiment at the Petra III Beamline P01 | |
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| The IXS High Resolution Monochromator at P01 is used for the intermediate X-Ray regime from 2.5keV to 3.5keV. The core component is a disk that carries the crystals. At the circumfence an encoder ring is mounted. A radial and axial runout of less than 1µm during the rotation is guaranteed by a high precision spindle bearing. The rotation is done by a PiezoLEG with a 110mm long ceramic bar that is coupled to the disk via a wire and provides an angular resolution better than 100nrad. The setup is in operation since mid 2017 with four crystals. In spring 2021 two additonal moving units where installed to position eight crystals in total. An enlargement of the angular range for the in-line setup is planned for spring 2024. | ||
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Slides WEOBM06 [7.534 MB] | |
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| WEOBM07 | Design, Modeling and Analysis of a Novel Piezoactuated XY Nanopositioner Supporting Beamline Optical Scanning | 150 |
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| In recent years, with the advancement of X-ray optics technology, the spot size of synchrotron beamlines has been reduced to 10nm or even smaller. The reduction in spot size and the emergence of ultra-bright synchrotron sources necessitate higher stability, resolution, and faster scanning speeds for positioning systems. This paper presents the design, analysis, and simulation of an XY piezoelectric driven nanopositioning platform that supports high-precision optical scanning systems. To achieve fast and highly precise motion under the load of an optical system, a design scheme based on a hollow structure with flexible amplification and guiding mechanisms is proposed. This scheme increases displacement output while minimizing coupling displacement to ensure a high natural frequency. The rationality of this platform design is verified through modeling and finite element simulation. | ||
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Slides WEOBM07 [3.448 MB] | |
| DOI • | reference for this paper ※ doi:10.18429/JACoW-MEDSI2023-WEOBM07 | |
| About • | Received ※ 02 November 2023 — Revised ※ 03 November 2023 — Accepted ※ 04 November 2023 — Issued ※ 18 April 2024 | |
| Cite • | reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml) | |