Author: Ren, Z.R.
Paper Title Page
TUPYP010
 A Novel Coating to Avoid Corrosion Effect and Vibration Coupling Between Eutectic Gallium-Indium Alloy and Heat Sink Metal for X-Ray Optics Cooling  
 
  • T. He, M. Li, W.C. Liu, Z.N. Ou, Z.R. Ren, W.F. Sheng, S. Tang, J.L. Yang, H.H. Yu, X.M. Zhang
    IHEP, Beijing, People’s Republic of China
  • T. He, M. Li, W.C. Liu, W.F. Sheng, S. Tang, J.L. Yang, H.H. Yu, X.M. Zhang
    University of Chinese Academy of Sciences, Beijing, People’s Republic of China
  
  Although the vibration decoupling method based on eutectic gallium-indium (EGaIn) alloy performs excellent in suppressing parasitic vibration caused by the cooling medium and pipes of X-ray optics, the corrosion of EGaIn alloy to the heat sink metal still results in the solidification and the vibration decoupling failure. A novel anti-corrosion coating based on tungsten(W) is proposed. Through the analysis of the micromorphology and the chemical composition after heating for 36 hours at 250°C, there is no obvious evidence that W is corroded which is more effective than the widely used coating of nickle(Ni). And the W coating by using magnetron sputtering has been implemented for feasibility validation. Its corrosion resistance mechanism has also been fully analyzed. Besides, finite element analysis on the differences of vibration decoupling after applying W coatings and Ni coatings are also carried out and discussed. W is proved to be a considerable coating for vibration decoupling to face up to the challenge of the ultra-high requirements of high stability (~10nrad RMS), high surface shape accuracy (¿50nrad RMS) in diffraction-limited storage ring light source.  
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TUPYP012
 Mechanical Design of Water-cooled White Beam Collimating Bent Mirror System at HEPS  
 
  • J.Y. Wang, M. Li, Z.R. Ren, W.F. Sheng, S. Tang, R.Z. Xu
    IHEP, Beijing, People’s Republic of China
  
  The main function of the Water-cooled White Beam Collimating Bent Mirror is to align the synchrotron radiation light to improve the resolution of its downstream monochromator; It also absorbs heat and reduces the heat load transmitted to the monochromator. Therefore, the accuracy of its posture directly affects the quality of the output beam. This article discusses the design of the device. It is mainly divided into 3 parts. The bending mechanism uses constant external force to elastically bend the optical elements to obtain the required surface shape. The cooling mechanism is used to reduce the thermal deformation of the mirror surface, thus reducing the surface error of the mirror. The overall mechanical system provides 5-DOF attitude adjustment. Based on this, this design adopts a combination scheme of a four-bar bender with independent bending moment, the copper blades inserted in the GaIn eutectic filled trough solution and 5-DOF attitude adjustment of multi-layer granite. Through a series of calculations, simulations and tests, it is demonstrated that the design indexes meet the requirements, thus verifying the feasibility of the scheme.  
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TUPYP035
 Mechanical Design of Compensation Device Using 1D CRL for Wavefront Deformation at HEPS  
 
  • X.H. Kuang, Z.R. Ren, W.F. Sheng, S. Tang
    IHEP, Beijing, People’s Republic of China
  
  Compensating devices using 1D CRL have been used in many beamlines at HEPS. Due to the deformations caused by the thermal and clamping of the monochromator, the beamline optical focus will be shifted in the horizontal or vertical direction. Then compensation device needs to be added to make the focus align with the sample position. The correction tablet uses 1D compound refractive lens (CRL), which is fixed on a customized five-dimensional manipulator. According to different errors corresponding to different energies, the correction tablet needs to rotate at different angles. If only the rotation angle cannot meet the requirements, a more appropriate CRL should be chose by switching, Generally in the horizontal direction through a large stroke to achieve. When cooling is required, the clamping block of the 1D CRL is made of Cu material with good heat transfer effect, and the displacement compensation of rotation is carried out by copper foil.  
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TUPYP041
 Design for Harmonic Suppression Mirrors Mechanical System with X-Ray Height Compensation Function at HEPS  
 
  • Z.R. Ren, M. Li, W.F. Sheng, S. Tang, L.R. Zheng
    IHEP, Beijing, People’s Republic of China
  
  In view of the fact that the Harmonic Suppression Mirrors (HSMs) mechanical system under the fast scanning mode of the X-ray Absorption Spectroscopy Beamline (XAS Beamline) of High Energy Photon Source (HEPS) needs to have a X-ray height compensation function in addition to suppressing high harmonics. This paper introduces a high stability 9-axis HSMs mechanical system, which has a basic 5-DOF adjustment, and the relative position relationship between the two mirrors is adjustable. By changing the center distance between the two mirrors, the gap between the two mirrors, and adjusting the parallelism of the two mirrors, the goal of compensating the output X-ray height difference of the upstream Channel Cut Monochromator is achieved. The vacuum machinery volume of the entire HSMs mechanical system is relatively large, which reaches 1766mm. Movement travel of the second mirrors reaches 620mm. Currently, the vacuum machinery has been processed and further testing is being carried out.  
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THOAM04 Overall Progress on Development of X-ray Optics Mechanical Systems at High Energy Photon Source (HEPS) 252
 
  • S. Tang, Y.H. Dong, X.H. Kuang, M. Li, H. Liang, R.Y. Liao, L.H. Ma, Z.N. Ou, H. Qian, Z.R. Ren, W.F. Sheng, J. Wang, R.Z. Xu, H.H. Yu
    IHEP, People’s Republic of China
  
  Funding: This work is supported by the project of High Energy Photon Source (HEPS).
High Energy Photon Source (HEPS) regarded as a new 4th generation synchrotron radiation facility, is under construction in a virgin green field in Beijing, China. The X-ray optics/mirror mechanical systems (MMS) play an important role, which would be expected to be designed carefully and rigidly for the extremely stable performance requirement of HEPS. In addition, there are indeed big challenges due to so many types of mirror systems, such as white beam mirror (WBM), harmonic suppression mirror (HSM), combined deflecting mirror (CDM), bending mirror, Nano-KB, and the transfocator of Compound refractive lens (CRLs), etc. Therefore, overall progress on design and maunfacturing of the MMS is introduced, in which a promoting strategy and generic mirror mechanical system as a key technology is presented and developed for the project of HEPS. Furthermore, ultra-stable structucture, multi-DOF precision positioning, Eutectic Galium Indium (E-GaIn)-based vibration-decoupling watercooling, clamping, and bending have always been prior designs and considerations.
Shanzhi Tang, Weifan Sheng, Jianye Wang, et al, Overall progress on the design of mirror mechanical systems at High Energy Photon Source (HEPS), SRI2021, Hamburg Germany, 2022. POSTER 		 
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DOI • reference for this paper ※ doi:10.18429/JACoW-MEDSI2023-THOAM04  
About • Received ※ 30 October 2023 — Revised ※ 05 November 2023 — Accepted ※ 10 November 2023 — Issued ※ 18 July 2024
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