MEDSI2023 - List of Keywords (alignment)

Paper	Title	Other Keywords	Page
TUPYP004	A Setup for the Evaluation of Thermal Contact Resistance at Cryogenic Temperatures Under Controlled Pressure Rates	cryogenics, radiation, vacuum, interface	37
	B.A. Francisco, D.Y. Kakizaki, M. Saveri Silva, W.H. Wilendorf, V.B. Zilli, G.S. de Albuquerque LNLS, Campinas, Brazil V.C. Kuriyama CNPEM, Campinas, SP, Brazil A. Lopes Ribeiro Federal University of Uberlandia, Uberlândia, M.G., Brazil J.H. dos Santos IF-UFRGS, Porto Alegre, Brazil
	The design of optical elements compass different development areas, such as optics, structures and dynamics, thermal, and control. In particular, the thermal designs of mirrors aim to minimize deformations, whose usual requirements are around 5 nm RMS and slope errors in the order of 150 nrad RMS. One of the main sources of uncertainties in thermal designs is the inconsistency in values of thermal contact resistances (TCR) found in the literature. A device based on the ASTM D5470 standard was proposed and designed to measure the TCR among materials commonly used in mirror systems. Precision engineering design tools were used to deal with the challenges related to the operation at cryogenic temperatures (145 K) and under several pressures rates (1~10 MPa) whilst ensuring the alignment between the specimens. We observed using indium as Thermal Interface Material reduced the TCR in 10~42,2% for SS316/Cu contacts, and 31~81% for Al/Cu. Upon analyzing the measurements, we identified some areas for improvements in the equipment, such as mitigating radiation and improving the heat flow in the cold part of the system that were implemented for the upgraded version.
	Poster TUPYP004 [2.549 MB]
DOI •	reference for this paper ※ doi:10.18429/JACoW-MEDSI2023-TUPYP004
About •	Received ※ 02 November 2023 — Revised ※ 06 November 2023 — Accepted ※ 09 November 2023 — Issued ※ 22 April 2024
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

TUPYP008	Exactly Constrained, High Heat Load Design for SABIA’s First Mirror	vacuum, MMI, monitoring, synchrotron	44
	V.B. Zilli, G.G. Basilio, J.C. Cezar, F.A. Del Nero, G.R.B. Ferreira, B.A. Francisco, M.E.O.A. Gardingo, R.R. Geraldes, A.C. Pinto, G.L.M.P. Rodrigues, L.M. Volpe, V.S. Ynamassu, R.G. de Oliveira LNLS, Campinas, Brazil C. Ambrosio CNPEM, Campinas, SP, Brazil
	Funding: Ministry of Science, Technology and Innovation (MCTI) The SABIA beamline (Soft x-ray ABsorption spectroscopy and ImAging) will operate in a range of 100 to 2000 eV and will perform XPS, PEEM and XMCD techniques at SIRIUS/LNLS. Thermal management on these soft x-ray beamlines is particularly challenging due to the high heat loads. SABIA’s first mirror (M1) absorbs about 360 W, with a maximum power density of 0.52 W/mm², and a water-cooled mirror was designed to handle this substantial heat load. To prolong the mirror operation lifetime, often shortened on soft X-ray beamlines due to carbon deposition on the mirror optical surface, a procedure was adopted using high partial pressure of O₂ into the vacuum chamber during the commissioning phase. The internal mechanism was designed to be exactly constrained using folded leaf springs. It presents one degree of freedom for control and alignment: a rotation around the vertical axis with a motion range of about ±0.6 mrad, provided by a piezoelectric actuator and measured using vacuum compatible linear encoders. This work describes the SABIA’s M1 exactly constrained, high heat absorbent design, its safety particularities compared to SIRIUS typical mirrors, and validation tests results.
	Poster TUPYP008 [1.582 MB]
DOI •	reference for this paper ※ doi:10.18429/JACoW-MEDSI2023-TUPYP008
About •	Received ※ 02 November 2023 — Revised ※ 03 November 2023 — Accepted ※ 09 November 2023 — Issued ※ 21 February 2024
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TUPYP021	Development and Improvement of HEPS Mover	GUI, sextupole, FEL, quadrupole	58
	S. Yang, S.Y. Chen, C.H. Li, Z.H. Wang, L. Wu, Y.D. Xu IHEP, Beijing, People’s Republic of China
	Funding: Supported by the National Natural Science Foundation of China (No.12105295) High Energy Photon Source (HEPS) has been constructed after decade of research. As the first diffraction-limited storage ring light source, many advanced devices are applied in this project, including the Beam Based Alignment Mover (Mover), which support and adjust the position of the Sextupole Magnet. It undertakes to remotely online adjust the position of Sextupole to meet the Physical requirement to correct the optics coefficient of Electron beam current. The positioning accuracy, attitude angle, and coupled error of Mover with 450kg load strictly proposed and tested during the development of Mover. There are three main types of Mover, including Four-layer with sliding guide, Three-layer with rolling guide, and Three-layer with sliding guide. This paper introduces the development and improvement of Mover.
	Poster TUPYP021 [0.842 MB]
DOI •	reference for this paper ※ doi:10.18429/JACoW-MEDSI2023-TUPYP021
About •	Received ※ 23 October 2023 — Revised ※ 05 November 2023 — Accepted ※ 09 November 2023 — Issued ※ 08 July 2024
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WEPPP002	The Status of the High-Dynamic DCM-Lite for Sirius/LNLS	controls, MMI, vacuum, synchrotron	154
	G.S. de Albuquerque, J.P.S. Furtado, N.P. Hara, M. Saveri Silva, T.R. Silva Soares LNLS, Campinas, Brazil
	Funding: Ministry of Science, Technology and Innovation (MCTI) Two new High-Dynamics Double Crystal Monochromators (HD-DCM-Lite) are under installation for QUATI (superbend) and SAPUCAIA (undulator) beamlines at Sirius. The HD-DCM-Lite portrays an updated version of Sirius LNLS HD-DCMs not only in terms of being a lighter equipment for sinusoidal scans speeds with even higher stability goals, but also bringing forward greater robustness for Sirius monochromators projects. It takes advantage of the experience gained from assembly and operation of the previous versions during the last years considering several work fronts, from the mechanics of the bench and cooling systems to FMEA, alignment procedures and control upgrades. In this work those challenges are depicted, and first offline results regarding thermal and dynamical aspects are presented.
	Poster WEPPP002 [7.970 MB]
DOI •	reference for this paper ※ doi:10.18429/JACoW-MEDSI2023-WEPPP002
About •	Received ※ 01 November 2023 — Revised ※ 03 November 2023 — Accepted ※ 10 November 2023 — Issued ※ 11 December 2023
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WEPPP004	High Heat Load Transfocator for the New ID14 ESRF Beamline	SRF, undulator, collimation, focusing	158
	L. Eybert, P. Brumund, J. Reyes-Herrera ESRF, Grenoble, France
	X ray refractive lenses (CRL) are powerful in-line optics for focusing x-rays. They offer many advantages such as compactness, a comfortable working distance, robustness, and are suitable for use in a wide range of energy. In the scope of the new nuclear resonance ID14 beamline at ESRF, a new transfocator was developed. This transfocator benefits from the previous experience of ESRF’s transfocators to withstand the high power densities (645W/mm2) and total power (405W) generated by the future CPMU18 and the high positioning tolerance required = <± 20µm within the same LCR assembly and between different assemblies. A thermal load analysis was carried out to optimize the cooling design for both 1D and 2D Beryllium lenses unit assembly. The tight alignment specifications was achieved thanks a good machining of both lenses unit mechanical assembly and reference V shaped rail. High positioning repeatability of CRLs actuator is assured by an optimized flexor and a good alignment procedure. The transfocator vessel is installed on a granite and a 4-DOF alignment table.
DOI •	reference for this paper ※ doi:10.18429/JACoW-MEDSI2023-WEPPP004
About •	Received ※ 27 October 2023 — Revised ※ 06 November 2023 — Accepted ※ 10 November 2023 — Issued ※ 18 January 2024
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WEPPP009	POLAR Synchrotron Diffractometer	detector, synchrotron, scattering, 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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WEPPP030	MAX IV –- MicroMAX Detector Stage	detector, GUI, resonance, experiment	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
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WEPPP047	Installation Process Experiment of HEPS Storage Ring Equipment	experiment, sextupole, vacuum, storage-ring	222
	C.H. Li, F.S. Chen, S.Y. Chen, L. Dong, G. Feng, S. Lu, Z.H. Wang, L. Wu, Y.F. Wu, Y.D. Xu, M. Yang, S. Yang IHEP, Beijing, People’s Republic of China
	HEPS is a new generation synchrotron radiation source under construction in China. In order to complete high-precision installation of the 1.4km storage ring within a limited construction period, it is necessary to identify and solve potential issues in various aspects, including opera-tion space, installation process, alignment scheme, and unit transportation, prior to the regular batch installation. Therefore, a full-process installation experiment was performed and the feasibility of relevant schemes are verified. Batch installation is currently in progress based on the experimental experience.
	Poster WEPPP047 [0.874 MB]
DOI •	reference for this paper ※ doi:10.18429/JACoW-MEDSI2023-WEPPP047
About •	Received ※ 20 October 2023 — Revised ※ 05 November 2023 — Accepted ※ 08 November 2023 — Issued ※ 23 March 2024
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WEPPP054	Vibration Analysis of Storage Ring Girder for the Korea 4GSR	storage-ring, operation, synchrotron, resonance	236
	G.W. Hong, T. Ha, H.S. Han, H.-G. Lee PAL, Pohang, Republic of Korea
	Ensuring the mechanical stability of the girder for a 4th generation storage ring (4GSR) is crucial to provide a high-quality photon beam to users because the mechanical motion should be maintained at less than 10% of the electron beam size which is expected to be sub-micrometer. One of the key roles of the girder is to provide structural rigidity and temperature stability while effectively suppressing vibrations from the ground during accelerator operation. The Korea 4GSR girder is being designed to have the first natural frequency above 50 Hz to minimize the effect of the ground vibration. In order to maintain better mechanical stability, it is necessary to conduct research not only on the natural vibration evaluation of the girder but also on external vibrations to the girder structure. In this paper, we introduce the result of the harmonic analysis of the girder structure using the finite element method.
DOI •	reference for this paper ※ doi:10.18429/JACoW-MEDSI2023-WEPPP054
About •	Received ※ 25 October 2023 — Revised ※ 06 November 2023 — Accepted ※ 08 November 2023 — Issued ※ 18 July 2024
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THOAM01	Development and Qualification of Micrometre Resolution Motorized Actuators for the High Luminosity Large Hadron Collider Full Remote Alignment System	monitoring, luminosity, feedback, collider	243
	M.N. Noir, P.B. Biedrawa, S.F. Fargier, J.W. Jasonek, M. Sosin CERN, Meyrin, Switzerland P.B. Biedrawa, J.W. Jasonek AGH University of Science and Technology, Kraków, Poland
	In the framework of the High-Luminosity Large Hadron Collider project at CERN, a Full Remote Alignment System (FRAS) is under development, integrating a range of solutions for the remote positioning of accelerator components. An important component of FRAS is the motorized actuator allowing the remote adjustment of accelerator components with a micrometer resolution. These actuators need to fulfill multiple requirements to comply with safety rules, and be highly reliable and maintenance free as thus are located in a harsh environment. The integration of the safety functions required for the FRAS was crucial, with the motorized actuators able to provide an absolute position monitoring of the available stroke, integrating electrical end-stops and having an embedded mechanical stop as a hardware safety layer. In addition, the design has been elaborated to allow a rapid, in-situ readjustment of the nominal stroke in order to cope with potential readjustment requirements, following long-term drifts caused by ground motion. This paper describes the design approach, prototyping and qualification of these motorized actuators.
	Slides THOAM01 [8.636 MB]
DOI •	reference for this paper ※ doi:10.18429/JACoW-MEDSI2023-THOAM01
About •	Received ※ 26 October 2023 — Revised ※ 03 November 2023 — Accepted ※ 07 November 2023 — Issued ※ 08 May 2024
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THOBM02	First Results of a New Hydrostatic Leveling System on Test Procedures at Sirius	monitoring, operation, ISOL, software	261
	W.R. Heinrich, G.R.S. Gama, G.J. Montagner, S.P. Oliveira, E. Teixeira SETUP, Campinas, Brazil R.B. Cardoso, L.R. Leão, S.R. Marques CNPEM, Campinas, SP, Brazil R.T. Neuenschwander LNLS, Campinas, Brazil
	Funding: FAPESP - Research Support Foundation of the State of Sao Paulo FINEP - Financier of Studies and Projects Program PIPE/PAPPE Subsidy - Phase 3 Process IDs: 2016/50070-3 and 2016/50522-1 The Hydrostatic Leveling System (HLS) is commonly employed in Structural Health Monitoring (SHM) to anticipate issues in large-scale structures. Particularly in structures like particle accelerators, it is used in high-precision alignment, where small differences in elevation such as terrestrial tides, could affect machine operation. This study outlines the development and evaluation of the first HLS based in Linear Variable Differential Transformer (LVDT) and were used to monitor the structure at LNLS/CNPEM, Brazil, from 2020 to 2023. A comparative analysis with a capacitance-based off-the-shelf HLS was executed, and experimental data analyzed through Fast Fourier Transform (FFT) confirmed the presence of tidal components in both HLS¿s data. Additionally, the correlation between level and temperature data was demonstrated by Pearson coefficient. The Setup-HLS device, developed with support from Brazilian national resources, exhibited accurate measurements in building tilt and diurnal and semi-diurnal Earth tide variations. Future researches include a calibration jig and an online verification system. This research provides a viable alternative to existing HLS systems.
	Slides THOBM02 [10.405 MB]
DOI •	reference for this paper ※ doi:10.18429/JACoW-MEDSI2023-THOBM02
About •	Received ※ 24 October 2023 — Revised ※ 05 November 2023 — Accepted ※ 09 November 2023 — Issued ※ 12 March 20244
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THPPP015	Mechanical Design of the Novel Precise Secondary Source Slits	simulation, vacuum, photon, GUI	303
	X.X. Yan, Y.J. Gong, Z. Ji, J.Y. Liu, H. Qin IASF, Shenzhen, Guangdong, People’s Republic of China
	High-precision slits are extensively adopted in coherent or nano-focusing beamlines as the secondary source, which can accurately define or achieve a beam size at the micron or sub-micron scale, while maintaining high stability. This paper presents the design of a set of precise slits based on a flexure hinge mechanism, which enables a nano-scale resolution and a stroke of hundreds of microns simultaneously. The coarse or fine adjustment motion of each blade can be accomplished with or without a displacement amplification mechanism, which is driven by a piezo actuator. Furthermore, the kinematic and dynamics models are investigated through finite element analysis (FEA) and numerical analysis successively, yielding consistent results. The optimized slits system can provide a linear stroke of up to 400 um with a resolution of 10 nm both in horizontal and vertical directions, whose first Eigen frequency is 130 Hz.
DOI •	reference for this paper ※ doi:10.18429/JACoW-MEDSI2023-THPPP015
About •	Received ※ 25 October 2023 — Revised ※ 05 November 2023 — Accepted ※ 09 November 2023 — Issued ※ 28 November 2023
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THPPP020	The Pre-alignment of High Energy Photon Source Storage Ring	target, laser, storage-ring, real-time	310
	S. Lu, L. Dong, L.L. Men, X.L. Wang IHEP, Beijing, People’s Republic of China J. Liang, T. Wang DNSC, Dongguan, People’s Republic of China
	In order to achieve 10 micrometer pre-alignment accuracy of storage ring in transverse and vertical, four laser trackers were used for set up a four-station multilateration measurement system. Experiment results show that the relative displacement measurement accuracy is better than 3 micrometer in 3-meter workpiece range, which can satisfy the real-time position feedback accuracy of the magnets in the process of ultra-high-precision pre-alignment. After two years of research and development, three pre-alignment standard workstations have been established. And the laser multilateration measurement method is adopted to the pre-alignment of the three, five and eight magnet girders in the storage ring of HEPS. Currently, 240 out of 288 girders have been pre-aligned after half a year of work.
DOI •	reference for this paper ※ doi:10.18429/JACoW-MEDSI2023-THPPP020
About •	Received ※ 07 November 2023 — Revised ※ 08 November 2023 — Accepted ※ 09 November 2023 — Issued ※ 03 December 2023
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THPPP026	Motorized Universal Adjustment Platform for Micrometric Adjustment of Accelerator Components	luminosity, collider, hadron, framework	316
	M.N. Noir, D.B. Baillard, P.B. Biedrawa, L. Gentini, J.W. Jasonek, F.-X. Nuiry, V. Rude, R. Seidenbinder, M. Sosin, K. Widuch CERN, Meyrin, Switzerland P.B. Biedrawa, J.W. Jasonek AGH University of Science and Technology, Kraków, Poland A. Gothe Aarhus University, Aarhus, Denmark
	In order to optimize alignment activities in a highly radioactive environment, the Geodetic Metrology Group at CERN has developed a standardized featuring 6 degree of freedom (DoF) Universal Adjustment Platform (UAP). After a first prototyping phase in 2021 with a manual UAP, the design has been consolidated and is now compatible with the installation of motorized actuators to form a remotely adjustable 5-6 DoF platform able to perform positioning with micrometre resolution. This paper presents the UAP and related motorized actuator development, elaborated in the frame of the High-Luminosity Large Hadron Collider project. The mechanical integration approach, design solutions, and test results are discussed.
	Poster THPPP026 [1.494 MB]
DOI •	reference for this paper ※ doi:10.18429/JACoW-MEDSI2023-THPPP026
About •	Received ※ 26 October 2023 — Revised ※ 03 November 2023 — Accepted ※ 07 November 2023 — Issued ※ 28 November 2023
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THPPP035	Mechanical System of the U26 Undulator Prototype for SHINE	FEL, undulator, SRF, linac	325
	S.W. Xiang, H.X. Deng, R. Deng, Z.Q. Jiang, Y.Y. Lei, J.Y. Yang, W. Zhang, T.T. Zhen, S.D. Zhou SARI-CAS, Pudong, Shanghai, People’s Republic of China
	The Shanghai High repetition rate XFEL and Extreme light facility (SHINE) is under construction and aims at generating X-rays between 0.4 and 25 keV with three FEL beamlines at repetition rates of up to 1 MHz[1-3]. The three undulator lines of the SHINE are referred to as the FEL-I, FEL-II, and FEL-III. Shanghai Synchrotron Radiation Facility(SSRF) will manufacture a total of 42 undulators (U26) with a period length of 26mm for FEL-I and 22 undulators (U55) with a period length of 55mm for FEL-II. Both the U26 and U55 are 4m long and use a common mechanical system. By using the specially designed double lever compensation springs can eliminate different magnetic force on the drive units. A U26 prototype has been developed and tested at SSRF. This paper describes the mechanical system design¿simulation and testing results of the U26 prototype, as well as its compatibility with U55.
DOI •	reference for this paper ※ doi:10.18429/JACoW-MEDSI2023-THPPP035
About •	Received ※ 25 October 2023 — Revised ※ 07 November 2023 — Accepted ※ 08 November 2023 — Issued ※ 11 December 2023
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THPPP038	Girders for SOLEIL-II Storage Ring	dipole, storage-ring, lattice, synchrotron	332
	J. Da Silva Castro, S. Ducourtieux, Z. Fan, F. Lepage, A. Nadji, K. Tavakoli SOLEIL, Gif-sur-Yvette, France
	After two decades since its establishment, the SOLEIL Synchrotron facility needs to adapt to follow new scientific fields that have emerged since. After the Conceptual Design Report (CDR) phase for the facility Upgrade, the SOLEIL teams have been working for several months on the Technical Design Report (TDR). The ¿SOLEIL Upgrade¿ project is called ¿SOLEIL II¿ and is divided into several sub-projects. Among these sub-projects, one concerns storage ring Girders that will support all magnets of the new Lattice. These 86 Girders, each one supported by 2 plinths, must ensure an excellent degree of vibration stability. Before obtaining a final design for these Girders, a significant amount of study work has already been carried out (design, finite elements simulations, sub-assembly prototyping, dynamic measurements, tests, etc.). To validate the concepts, a fully equipped prototype girder was launched into manufacturing. In this contribution the preliminary studies and the ongoing investigations on SOLEIL II girder design will be presented.
DOI •	reference for this paper ※ doi:10.18429/JACoW-MEDSI2023-THPPP038
About •	Received ※ 24 October 2023 — Revised ※ 05 November 2023 — Accepted ※ 09 November 2023 — Issued ※ 14 March 2024
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FROAM01	Design and Testing of HEPS Storage Ring Magnet Support System	simulation, storage-ring, experiment, sextupole	358
	Z.H. Wang, S.Y. Chen, C.H. Li, M.X. Li, H. Wang, L. Wu, Y.D. Xu, S. Yang, N.C. Zhou IHEP, Beijing, People’s Republic of China
	Very low emittance of High Energy Photon Source (HEPS) demands high stability and adjusting performance of the magnet support. The alignment error between girders should be less than 50 ¿m. Based on that, the adjusting resolution of the girder are required to be less than 5 ¿m in both transverse and vertical directions. Besides, the natural frequency of magnet support system should be higher than 54 Hz to avoid the amplification of ground vibrations. To fulfill the requirements, during the development of the prototype, the structure was designed through topology optimization, static analysis, grouting experiments, dynamic stiffness test and modal analysis, and the rationality of the structure was verified through prototype experiments. During the tunnel installation, the performance of the magnet support system was again verified to be better than the design requirements through test work after installation.
	Slides FROAM01 [7.976 MB]
DOI •	reference for this paper ※ doi:10.18429/JACoW-MEDSI2023-FROAM01
About •	Received ※ 25 October 2023 — Revised ※ 07 November 2023 — Accepted ※ 17 February 2024 — Issued ※ 12 March 2024
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Paper

Title

Other Keywords

Page

TUPYP004

A Setup for the Evaluation of Thermal Contact Resistance at Cryogenic Temperatures Under Controlled Pressure Rates

cryogenics, radiation, vacuum, interface

37

B.A. Francisco, D.Y. Kakizaki, M. Saveri Silva, W.H. Wilendorf, V.B. Zilli, G.S. de Albuquerque
LNLS, Campinas, Brazil
V.C. Kuriyama
CNPEM, Campinas, SP, Brazil
A. Lopes Ribeiro
Federal University of Uberlandia, Uberlândia, M.G., Brazil
J.H. dos Santos
IF-UFRGS, Porto Alegre, Brazil

The design of optical elements compass different development areas, such as optics, structures and dynamics, thermal, and control. In particular, the thermal designs of mirrors aim to minimize deformations, whose usual requirements are around 5 nm RMS and slope errors in the order of 150 nrad RMS. One of the main sources of uncertainties in thermal designs is the inconsistency in values of thermal contact resistances (TCR) found in the literature. A device based on the ASTM D5470 standard was proposed and designed to measure the TCR among materials commonly used in mirror systems. Precision engineering design tools were used to deal with the challenges related to the operation at cryogenic temperatures (145 K) and under several pressures rates (1~10 MPa) whilst ensuring the alignment between the specimens. We observed using indium as Thermal Interface Material reduced the TCR in 10~42,2% for SS316/Cu contacts, and 31~81% for Al/Cu. Upon analyzing the measurements, we identified some areas for improvements in the equipment, such as mitigating radiation and improving the heat flow in the cold part of the system that were implemented for the upgraded version.

Poster TUPYP004 [2.549 MB]

DOI •

reference for this paper ※ doi:10.18429/JACoW-MEDSI2023-TUPYP004

About •

Received ※ 02 November 2023 — Revised ※ 06 November 2023 — Accepted ※ 09 November 2023 — Issued ※ 22 April 2024

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

TUPYP008

Exactly Constrained, High Heat Load Design for SABIA’s First Mirror

vacuum, MMI, monitoring, synchrotron

44

V.B. Zilli, G.G. Basilio, J.C. Cezar, F.A. Del Nero, G.R.B. Ferreira, B.A. Francisco, M.E.O.A. Gardingo, R.R. Geraldes, A.C. Pinto, G.L.M.P. Rodrigues, L.M. Volpe, V.S. Ynamassu, R.G. de Oliveira
LNLS, Campinas, Brazil
C. Ambrosio
CNPEM, Campinas, SP, Brazil

Funding: Ministry of Science, Technology and Innovation (MCTI)
The SABIA beamline (Soft x-ray ABsorption spectroscopy and ImAging) will operate in a range of 100 to 2000 eV and will perform XPS, PEEM and XMCD techniques at SIRIUS/LNLS. Thermal management on these soft x-ray beamlines is particularly challenging due to the high heat loads. SABIA’s first mirror (M1) absorbs about 360 W, with a maximum power density of 0.52 W/mm², and a water-cooled mirror was designed to handle this substantial heat load. To prolong the mirror operation lifetime, often shortened on soft X-ray beamlines due to carbon deposition on the mirror optical surface, a procedure was adopted using high partial pressure of O₂ into the vacuum chamber during the commissioning phase. The internal mechanism was designed to be exactly constrained using folded leaf springs. It presents one degree of freedom for control and alignment: a rotation around the vertical axis with a motion range of about ±0.6 mrad, provided by a piezoelectric actuator and measured using vacuum compatible linear encoders. This work describes the SABIA’s M1 exactly constrained, high heat absorbent design, its safety particularities compared to SIRIUS typical mirrors, and validation tests results.

Poster TUPYP008 [1.582 MB]

DOI •

reference for this paper ※ doi:10.18429/JACoW-MEDSI2023-TUPYP008

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Received ※ 02 November 2023 — Revised ※ 03 November 2023 — Accepted ※ 09 November 2023 — Issued ※ 21 February 2024

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TUPYP021

Development and Improvement of HEPS Mover

GUI, sextupole, FEL, quadrupole

58

S. Yang, S.Y. Chen, C.H. Li, Z.H. Wang, L. Wu, Y.D. Xu
IHEP, Beijing, People’s Republic of China

Funding: Supported by the National Natural Science Foundation of China (No.12105295)
High Energy Photon Source (HEPS) has been constructed after decade of research. As the first diffraction-limited storage ring light source, many advanced devices are applied in this project, including the Beam Based Alignment Mover (Mover), which support and adjust the position of the Sextupole Magnet. It undertakes to remotely online adjust the position of Sextupole to meet the Physical requirement to correct the optics coefficient of Electron beam current. The positioning accuracy, attitude angle, and coupled error of Mover with 450kg load strictly proposed and tested during the development of Mover. There are three main types of Mover, including Four-layer with sliding guide, Three-layer with rolling guide, and Three-layer with sliding guide. This paper introduces the development and improvement of Mover.

Poster TUPYP021 [0.842 MB]

DOI •

reference for this paper ※ doi:10.18429/JACoW-MEDSI2023-TUPYP021

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Received ※ 23 October 2023 — Revised ※ 05 November 2023 — Accepted ※ 09 November 2023 — Issued ※ 08 July 2024

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WEPPP002

The Status of the High-Dynamic DCM-Lite for Sirius/LNLS

controls, MMI, vacuum, synchrotron

154

G.S. de Albuquerque, J.P.S. Furtado, N.P. Hara, M. Saveri Silva, T.R. Silva Soares
LNLS, Campinas, Brazil

Funding: Ministry of Science, Technology and Innovation (MCTI)
Two new High-Dynamics Double Crystal Monochromators (HD-DCM-Lite) are under installation for QUATI (superbend) and SAPUCAIA (undulator) beamlines at Sirius. The HD-DCM-Lite portrays an updated version of Sirius LNLS HD-DCMs not only in terms of being a lighter equipment for sinusoidal scans speeds with even higher stability goals, but also bringing forward greater robustness for Sirius monochromators projects. It takes advantage of the experience gained from assembly and operation of the previous versions during the last years considering several work fronts, from the mechanics of the bench and cooling systems to FMEA, alignment procedures and control upgrades. In this work those challenges are depicted, and first offline results regarding thermal and dynamical aspects are presented.

Poster WEPPP002 [7.970 MB]

DOI •

reference for this paper ※ doi:10.18429/JACoW-MEDSI2023-WEPPP002

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Received ※ 01 November 2023 — Revised ※ 03 November 2023 — Accepted ※ 10 November 2023 — Issued ※ 11 December 2023

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WEPPP004

High Heat Load Transfocator for the New ID14 ESRF Beamline

SRF, undulator, collimation, focusing

158

L. Eybert, P. Brumund, J. Reyes-Herrera
ESRF, Grenoble, France

X ray refractive lenses (CRL) are powerful in-line optics for focusing x-rays. They offer many advantages such as compactness, a comfortable working distance, robustness, and are suitable for use in a wide range of energy. In the scope of the new nuclear resonance ID14 beamline at ESRF, a new transfocator was developed. This transfocator benefits from the previous experience of ESRF’s transfocators to withstand the high power densities (645W/mm2) and total power (405W) generated by the future CPMU18 and the high positioning tolerance required = <± 20µm within the same LCR assembly and between different assemblies. A thermal load analysis was carried out to optimize the cooling design for both 1D and 2D Beryllium lenses unit assembly. The tight alignment specifications was achieved thanks a good machining of both lenses unit mechanical assembly and reference V shaped rail. High positioning repeatability of CRLs actuator is assured by an optimized flexor and a good alignment procedure. The transfocator vessel is installed on a granite and a 4-DOF alignment table.

DOI •

reference for this paper ※ doi:10.18429/JACoW-MEDSI2023-WEPPP004

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Received ※ 27 October 2023 — Revised ※ 06 November 2023 — Accepted ※ 10 November 2023 — Issued ※ 18 January 2024

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WEPPP009

POLAR Synchrotron Diffractometer

detector, synchrotron, scattering, 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

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Received ※ 02 November 2023 — Revised ※ 04 November 2023 — Accepted ※ 09 November 2023 — Issued ※ 28 February 2024

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WEPPP030

MAX IV –- MicroMAX Detector Stage

detector, GUI, resonance, experiment

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

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

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WEPPP047

Installation Process Experiment of HEPS Storage Ring Equipment

experiment, sextupole, vacuum, storage-ring

222

C.H. Li, F.S. Chen, S.Y. Chen, L. Dong, G. Feng, S. Lu, Z.H. Wang, L. Wu, Y.F. Wu, Y.D. Xu, M. Yang, S. Yang
IHEP, Beijing, People’s Republic of China

HEPS is a new generation synchrotron radiation source under construction in China. In order to complete high-precision installation of the 1.4km storage ring within a limited construction period, it is necessary to identify and solve potential issues in various aspects, including opera-tion space, installation process, alignment scheme, and unit transportation, prior to the regular batch installation. Therefore, a full-process installation experiment was performed and the feasibility of relevant schemes are verified. Batch installation is currently in progress based on the experimental experience.

Poster WEPPP047 [0.874 MB]

DOI •

reference for this paper ※ doi:10.18429/JACoW-MEDSI2023-WEPPP047

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Received ※ 20 October 2023 — Revised ※ 05 November 2023 — Accepted ※ 08 November 2023 — Issued ※ 23 March 2024

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WEPPP054

Vibration Analysis of Storage Ring Girder for the Korea 4GSR

storage-ring, operation, synchrotron, resonance

236

G.W. Hong, T. Ha, H.S. Han, H.-G. Lee
PAL, Pohang, Republic of Korea

Ensuring the mechanical stability of the girder for a 4th generation storage ring (4GSR) is crucial to provide a high-quality photon beam to users because the mechanical motion should be maintained at less than 10% of the electron beam size which is expected to be sub-micrometer. One of the key roles of the girder is to provide structural rigidity and temperature stability while effectively suppressing vibrations from the ground during accelerator operation. The Korea 4GSR girder is being designed to have the first natural frequency above 50 Hz to minimize the effect of the ground vibration. In order to maintain better mechanical stability, it is necessary to conduct research not only on the natural vibration evaluation of the girder but also on external vibrations to the girder structure. In this paper, we introduce the result of the harmonic analysis of the girder structure using the finite element method.

DOI •

reference for this paper ※ doi:10.18429/JACoW-MEDSI2023-WEPPP054

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Received ※ 25 October 2023 — Revised ※ 06 November 2023 — Accepted ※ 08 November 2023 — Issued ※ 18 July 2024

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THOAM01

Development and Qualification of Micrometre Resolution Motorized Actuators for the High Luminosity Large Hadron Collider Full Remote Alignment System

monitoring, luminosity, feedback, collider

243

M.N. Noir, P.B. Biedrawa, S.F. Fargier, J.W. Jasonek, M. Sosin
CERN, Meyrin, Switzerland
P.B. Biedrawa, J.W. Jasonek
AGH University of Science and Technology, Kraków, Poland

In the framework of the High-Luminosity Large Hadron Collider project at CERN, a Full Remote Alignment System (FRAS) is under development, integrating a range of solutions for the remote positioning of accelerator components. An important component of FRAS is the motorized actuator allowing the remote adjustment of accelerator components with a micrometer resolution. These actuators need to fulfill multiple requirements to comply with safety rules, and be highly reliable and maintenance free as thus are located in a harsh environment. The integration of the safety functions required for the FRAS was crucial, with the motorized actuators able to provide an absolute position monitoring of the available stroke, integrating electrical end-stops and having an embedded mechanical stop as a hardware safety layer. In addition, the design has been elaborated to allow a rapid, in-situ readjustment of the nominal stroke in order to cope with potential readjustment requirements, following long-term drifts caused by ground motion. This paper describes the design approach, prototyping and qualification of these motorized actuators.

Slides THOAM01 [8.636 MB]

DOI •

reference for this paper ※ doi:10.18429/JACoW-MEDSI2023-THOAM01

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Received ※ 26 October 2023 — Revised ※ 03 November 2023 — Accepted ※ 07 November 2023 — Issued ※ 08 May 2024

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THOBM02

First Results of a New Hydrostatic Leveling System on Test Procedures at Sirius

monitoring, operation, ISOL, software

261

W.R. Heinrich, G.R.S. Gama, G.J. Montagner, S.P. Oliveira, E. Teixeira
SETUP, Campinas, Brazil
R.B. Cardoso, L.R. Leão, S.R. Marques
CNPEM, Campinas, SP, Brazil
R.T. Neuenschwander
LNLS, Campinas, Brazil

Funding: FAPESP - Research Support Foundation of the State of Sao Paulo FINEP - Financier of Studies and Projects Program PIPE/PAPPE Subsidy - Phase 3 Process IDs: 2016/50070-3 and 2016/50522-1
The Hydrostatic Leveling System (HLS) is commonly employed in Structural Health Monitoring (SHM) to anticipate issues in large-scale structures. Particularly in structures like particle accelerators, it is used in high-precision alignment, where small differences in elevation such as terrestrial tides, could affect machine operation. This study outlines the development and evaluation of the first HLS based in Linear Variable Differential Transformer (LVDT) and were used to monitor the structure at LNLS/CNPEM, Brazil, from 2020 to 2023. A comparative analysis with a capacitance-based off-the-shelf HLS was executed, and experimental data analyzed through Fast Fourier Transform (FFT) confirmed the presence of tidal components in both HLS¿s data. Additionally, the correlation between level and temperature data was demonstrated by Pearson coefficient. The Setup-HLS device, developed with support from Brazilian national resources, exhibited accurate measurements in building tilt and diurnal and semi-diurnal Earth tide variations. Future researches include a calibration jig and an online verification system. This research provides a viable alternative to existing HLS systems.

Slides THOBM02 [10.405 MB]

DOI •

reference for this paper ※ doi:10.18429/JACoW-MEDSI2023-THOBM02

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Received ※ 24 October 2023 — Revised ※ 05 November 2023 — Accepted ※ 09 November 2023 — Issued ※ 12 March 20244

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THPPP015

Mechanical Design of the Novel Precise Secondary Source Slits

simulation, vacuum, photon, GUI

303

X.X. Yan, Y.J. Gong, Z. Ji, J.Y. Liu, H. Qin
IASF, Shenzhen, Guangdong, People’s Republic of China

High-precision slits are extensively adopted in coherent or nano-focusing beamlines as the secondary source, which can accurately define or achieve a beam size at the micron or sub-micron scale, while maintaining high stability. This paper presents the design of a set of precise slits based on a flexure hinge mechanism, which enables a nano-scale resolution and a stroke of hundreds of microns simultaneously. The coarse or fine adjustment motion of each blade can be accomplished with or without a displacement amplification mechanism, which is driven by a piezo actuator. Furthermore, the kinematic and dynamics models are investigated through finite element analysis (FEA) and numerical analysis successively, yielding consistent results. The optimized slits system can provide a linear stroke of up to 400 um with a resolution of 10 nm both in horizontal and vertical directions, whose first Eigen frequency is 130 Hz.

DOI •

reference for this paper ※ doi:10.18429/JACoW-MEDSI2023-THPPP015

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Received ※ 25 October 2023 — Revised ※ 05 November 2023 — Accepted ※ 09 November 2023 — Issued ※ 28 November 2023

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THPPP020

The Pre-alignment of High Energy Photon Source Storage Ring

target, laser, storage-ring, real-time

310

S. Lu, L. Dong, L.L. Men, X.L. Wang
IHEP, Beijing, People’s Republic of China
J. Liang, T. Wang
DNSC, Dongguan, People’s Republic of China

In order to achieve 10 micrometer pre-alignment accuracy of storage ring in transverse and vertical, four laser trackers were used for set up a four-station multilateration measurement system. Experiment results show that the relative displacement measurement accuracy is better than 3 micrometer in 3-meter workpiece range, which can satisfy the real-time position feedback accuracy of the magnets in the process of ultra-high-precision pre-alignment. After two years of research and development, three pre-alignment standard workstations have been established. And the laser multilateration measurement method is adopted to the pre-alignment of the three, five and eight magnet girders in the storage ring of HEPS. Currently, 240 out of 288 girders have been pre-aligned after half a year of work.

DOI •

reference for this paper ※ doi:10.18429/JACoW-MEDSI2023-THPPP020

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Received ※ 07 November 2023 — Revised ※ 08 November 2023 — Accepted ※ 09 November 2023 — Issued ※ 03 December 2023

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THPPP026

Motorized Universal Adjustment Platform for Micrometric Adjustment of Accelerator Components

luminosity, collider, hadron, framework

316

M.N. Noir, D.B. Baillard, P.B. Biedrawa, L. Gentini, J.W. Jasonek, F.-X. Nuiry, V. Rude, R. Seidenbinder, M. Sosin, K. Widuch
CERN, Meyrin, Switzerland
P.B. Biedrawa, J.W. Jasonek
AGH University of Science and Technology, Kraków, Poland
A. Gothe
Aarhus University, Aarhus, Denmark

In order to optimize alignment activities in a highly radioactive environment, the Geodetic Metrology Group at CERN has developed a standardized featuring 6 degree of freedom (DoF) Universal Adjustment Platform (UAP). After a first prototyping phase in 2021 with a manual UAP, the design has been consolidated and is now compatible with the installation of motorized actuators to form a remotely adjustable 5-6 DoF platform able to perform positioning with micrometre resolution. This paper presents the UAP and related motorized actuator development, elaborated in the frame of the High-Luminosity Large Hadron Collider project. The mechanical integration approach, design solutions, and test results are discussed.

Poster THPPP026 [1.494 MB]

DOI •

reference for this paper ※ doi:10.18429/JACoW-MEDSI2023-THPPP026

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Received ※ 26 October 2023 — Revised ※ 03 November 2023 — Accepted ※ 07 November 2023 — Issued ※ 28 November 2023

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THPPP035

Mechanical System of the U26 Undulator Prototype for SHINE

FEL, undulator, SRF, linac

325

S.W. Xiang, H.X. Deng, R. Deng, Z.Q. Jiang, Y.Y. Lei, J.Y. Yang, W. Zhang, T.T. Zhen, S.D. Zhou
SARI-CAS, Pudong, Shanghai, People’s Republic of China

The Shanghai High repetition rate XFEL and Extreme light facility (SHINE) is under construction and aims at generating X-rays between 0.4 and 25 keV with three FEL beamlines at repetition rates of up to 1 MHz[1-3]. The three undulator lines of the SHINE are referred to as the FEL-I, FEL-II, and FEL-III. Shanghai Synchrotron Radiation Facility(SSRF) will manufacture a total of 42 undulators (U26) with a period length of 26mm for FEL-I and 22 undulators (U55) with a period length of 55mm for FEL-II. Both the U26 and U55 are 4m long and use a common mechanical system. By using the specially designed double lever compensation springs can eliminate different magnetic force on the drive units. A U26 prototype has been developed and tested at SSRF. This paper describes the mechanical system design¿simulation and testing results of the U26 prototype, as well as its compatibility with U55.

DOI •

reference for this paper ※ doi:10.18429/JACoW-MEDSI2023-THPPP035

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Received ※ 25 October 2023 — Revised ※ 07 November 2023 — Accepted ※ 08 November 2023 — Issued ※ 11 December 2023

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THPPP038

Girders for SOLEIL-II Storage Ring

dipole, storage-ring, lattice, synchrotron

332

J. Da Silva Castro, S. Ducourtieux, Z. Fan, F. Lepage, A. Nadji, K. Tavakoli
SOLEIL, Gif-sur-Yvette, France

After two decades since its establishment, the SOLEIL Synchrotron facility needs to adapt to follow new scientific fields that have emerged since. After the Conceptual Design Report (CDR) phase for the facility Upgrade, the SOLEIL teams have been working for several months on the Technical Design Report (TDR). The ¿SOLEIL Upgrade¿ project is called ¿SOLEIL II¿ and is divided into several sub-projects. Among these sub-projects, one concerns storage ring Girders that will support all magnets of the new Lattice. These 86 Girders, each one supported by 2 plinths, must ensure an excellent degree of vibration stability. Before obtaining a final design for these Girders, a significant amount of study work has already been carried out (design, finite elements simulations, sub-assembly prototyping, dynamic measurements, tests, etc.). To validate the concepts, a fully equipped prototype girder was launched into manufacturing. In this contribution the preliminary studies and the ongoing investigations on SOLEIL II girder design will be presented.

DOI •

reference for this paper ※ doi:10.18429/JACoW-MEDSI2023-THPPP038

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Received ※ 24 October 2023 — Revised ※ 05 November 2023 — Accepted ※ 09 November 2023 — Issued ※ 14 March 2024

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FROAM01

Design and Testing of HEPS Storage Ring Magnet Support System

simulation, storage-ring, experiment, sextupole

358

Z.H. Wang, S.Y. Chen, C.H. Li, M.X. Li, H. Wang, L. Wu, Y.D. Xu, S. Yang, N.C. Zhou
IHEP, Beijing, People’s Republic of China

Very low emittance of High Energy Photon Source (HEPS) demands high stability and adjusting performance of the magnet support. The alignment error between girders should be less than 50 ¿m. Based on that, the adjusting resolution of the girder are required to be less than 5 ¿m in both transverse and vertical directions. Besides, the natural frequency of magnet support system should be higher than 54 Hz to avoid the amplification of ground vibrations. To fulfill the requirements, during the development of the prototype, the structure was designed through topology optimization, static analysis, grouting experiments, dynamic stiffness test and modal analysis, and the rationality of the structure was verified through prototype experiments. During the tunnel installation, the performance of the magnet support system was again verified to be better than the design requirements through test work after installation.

Slides FROAM01 [7.976 MB]

DOI •

reference for this paper ※ doi:10.18429/JACoW-MEDSI2023-FROAM01

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Received ※ 25 October 2023 — Revised ※ 07 November 2023 — Accepted ※ 17 February 2024 — Issued ※ 12 March 2024

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