Keyword: synchrotron-radiation
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TUPH21 Design of Vertical and Horizontal Linear Flexure Stages for Beam Size Monitor System radiation, simulation, synchrotron, emittance 72
 
  • W.Y. Lai, H.C. Ho, K.H. Hsu, D.-G. Huang, C.K. Kuan, C.J. Lin, S.Y. Perng, T.C. Tseng, H.S. Wang
    NSRRC, Hsinchu, Taiwan
 
  Taiwan photon source is a third generation accelerator with low emittance and high brightness. The electric beam size is one of important parameters to indicate the stabil-ity and to measure the emittance and coupling of light source. The aperture size of beam slitter is a crucial part to calculate the value of beam size in the X-ray pine-hole system. In order to obtain the more precise result of beam size, the flexure mechanism on beam slitter is applied for the adjustment of the aperture. This paper shows that the design concept and the measurement of the beam size are obtained by the new adjustment system.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2018-TUPH21  
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WEPH09 Vibrational Stability of a Cryocooled Double Crystal Monochromator at SSRF SRF, radiation, experiment, laser 220
 
  • Y. Fan, H.L. Qin
    SSRF, Shanghai, People's Republic of China
  • Z. L. Li, F. Tao, W. Zhu
    SINAP, Shanghai, People's Republic of China
 
  There is an increasingly critical demand on the angular stability of double crystal monochromator (DCM). This work focuses on a method to measure angular vibration directly at the DCM crystals using a dual-frequency interferometer. This method was applied to the off-line test of a newly developed cryocooled DCM at Shanghai Syn-chrotron Radiation Facility (SSRF), which can obtain a resolution of 8 nrad. The DCM was then tested on the X-ray Test Line. Both off-line and on-line results were referenced for DCM structure optimizations. In this paper, the DCM angular stability measuring method is presented, and detailed information of the results are shown.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2018-WEPH09  
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WEPH28 A Note of Thermal Analysis in Synchrotron Radiation Accelerator Engineering radiation, synchrotron, insertion-device, undulator 264
 
  • I.C. Sheng
    NSRRC, Hsinchu, Taiwan
 
  Thermal and thermomechanical analysis is one of the key process while designing accelerator components that may subject to synchrotron radiation heating. Even some closed-form solutions are available, and yet as to complex geometry numerical analysis such as finite element method (FEM) is commonly used to obtain the result. However due to its complexity of density distribution of the heat load, implementing such boundary conditions in the FEM model is relatively tedious. In this report we provide a simplified, practical and more conservative method to apply heat load both for bending magnet and insertion device. In addition, a general purpose synchrotron radiation heating numerical modeling is also introduced.  
poster icon Poster WEPH28 [0.390 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2018-WEPH28  
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WEPH32 DESIGN OF A LAYERED HIGH PRECISION MAGNET GIRDER collimation, dipole, synchrotron, radiation 277
 
  • G.Y. Wang, L. Kang, J.B. Yu, J.S. Zhang
    IHEP, Beijing, People's Republic of China
  • J.X. Chen
    CSNS, Guangdong Province, People's Republic of China
 
  In order to adjust the collimation of the light source magnet, a layered magnet girder is developed, which can adjust the six degrees of freedom accurately and reduce the mutual influence of the adjustment process between the various layers of the girder. The precision of the collimation is up to 5 microns.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-MEDSI2018-WEPH32  
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