Author: Liu, J.Y.
Paper Title Page
THPPP014 A Special-Shaped Copper Block Cooling Method for White Beam Mirrors Under Ultra-High Heat Loads* 299
 
  • J.Y. Liu, H. Qin, X.X. Yan
    IASF, Shenzhen, Guangdong, People’s Republic of China
  
  In order to ful­fil the more strin­gent re­quire­ments of op-tical fig­ure ac­cu­racy for cooled X-Ray mir­rors im­posed to high heat loads, es­pe­cially from ad­vanced in­ser­tion de-vices in the dif­frac­tion lim­ited stor­age rings (DLSR), in­ves­ti­ga­tions on the cool­ing sys­tem for white beam mir­rors are con­ducted in this paper. A spe­cial-shaped cop­per block (SSCB) cool­ing method is pro­posed, using eu­tec­tic in­dium-gal­lium alloy as heat trans­fer medium. The SSCB cool­ing tech­nol­ogy can keep a 550mm-length mir­ror slope error of 0.2 ¿rad (RMS) under 230 W ab­sorp-tion heat power, show­ing great ad­van­tages in the ac­cura-cy and flex­i­bil­ity for ther­mal de­for­ma­tion min­i­miza­tion when com­pared with the tra­di­tional ones.  
DOI • reference for this paper ※ doi:10.18429/JACoW-MEDSI2023-THPPP014  
About • Received ※ 25 October 2023 — Revised ※ 05 November 2023 — Accepted ※ 06 November 2023 — Issued ※ 10 December 2023
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THPPP015 Mechanical Design of the Novel Precise Secondary Source Slits 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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