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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