Author: Xu, R.Z.
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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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TUPYP044
 Development of Typical Nano-KB/AKB Mirrors Mechanical System at HEPS  
 
  • H.H. Yu, M. Li, R.Y. Liao, W.F. Sheng, S. Tang, R.Z. Xu
    IHEP, People’s Republic of China
  • Y. Li
    BUAA, Beijing, People’s Republic of China
  • Y. Li
    Rejected, -, Tanzania
  • S. Tang, H.H. Yu
    UCAS, Beijing, People’s Republic of China
  
  Nano-KB/AKB mir­rors are used to focus spot size to the nanome­ter level in main per­for­mance beam­lines at HEPS, in­clud­ing the Hard X-ray Nanoprobe Mul­ti­modal Imag­ing Beam­line(NAMI Beam­line), the Hard X-ray Co­her­ent Scat­ter­ing Beam­line(HXCS Beam­line), and X-ray Ab­sorp­tion Spec­troscopy Beam­line(XAS Beam­line), etc. For the typ­i­cal Nano-KB/AKB mir­rors me­chan­i­cal sys­tem, a com­mon de­sign of the mount­ing and clamp­ing mech­a­nisms and the ad­just­ment mech­a­nisms is pre­sented. There are also the key com­po­nents of the Nano-KB/AKB mir­rors me­chan­i­cal sys­tem. Cur­rently, through the de­sign and op­ti­mi­sa­tion of the me­chan­i­cal struc­ture and the cor­re­spond­ing fi­nite el­e­ment analy­sis(FEA), the first Nano-KB mir­rors me­chan­i­cal sys­tem at HEPS has been fab­ri­cated, and the large travel range, high res­o­lu­tion and high sta­bil­ity ad­just­ments mech­a­nisms are achieved, the slope error of the Nano-KB mir­rors is well en­sured si­mul­ta­ne­ously, and the test re­sults are con­sis­tent with the de­sign.  
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WEPPP016 Mechanical Design of XRS & RIXS Multi-Functional Spectrometer at the High Energy Photon Source 178
 
  • J.C. Zhang, Z.Y. Guo, X. Jia, S.X. Jin, Z.N. Ou, W.F. Sheng, S. Tang, R.Z. Xu, W. Xu, Y.J. Zhang
    IHEP, Beijing, People’s Republic of China
  
  The in­te­gra­tion of an X-ray Raman spec­troscopy (XRS) spec­trom­e­ter and a Res­o­nant In­elas­tic X-ray scat­ter­ing (RIXS) spec­trom­e­ter at HEPS is de­scribed. The XRS has 6 reg­u­lar mod­u­lar groups and 1 high res­o­lu­tion mod­u­lar group. In total 90 pieces of spher­i­cally bent an­a­lyzer crys­tals are mounted in low vac­uum cham­bers with pres­sure lower than 100Pa. On the other hand, the RIXS spec­trom­e­ter pos­sesses one spher­i­cally bent an­a­lyzer crys­tal con­fig­ured in Row­land geom­e­try whose di­am­e­ter is change­able from 1m to 2m. The scat­ter­ing X-ray pho­tons trans­port mostly in he­lium cham­ber to re­duce ab­sorp­tion by air. The RIXS and the high res­o­lu­tion mod­ule can be ex­changed when needed. Six air feet are set under the gran­ite plate to un­load the weight when the heavy spec­trom­e­ter is aligned. The nat­ural fre­quency and sta­t­ics of the main gran­ite rack were an­a­lyzed and op­ti­mized to main­tain high sta­bil­ity for the HEPS-ID33 beam­line at the 4th gen­er­a­tion source. A type of com­pact and cost-ef­fec­tive ad­just­ment gad­get for the crys­tals was de­signed and fab­ri­cated. Eco­nomic so­lu­tions in se­lec­tion of mo­tors and sen­sors and other as­pects were adopted for build­ing the large spec­trom­e­ter like this.  
DOI • reference for this paper ※ doi:10.18429/JACoW-MEDSI2023-WEPPP016  
About • Received ※ 02 November 2023 — Revised ※ 06 November 2023 — Accepted ※ 09 November 2023 — Issued ※ 11 April 2024
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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 		 
slides icon Slides THOAM04 [2.328 MB]  
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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THPPP021
 Ultra-Stable and Multi-DOF Bent KB Mirror Mechanical System for Hard X-Ray High Energy Resolution Spectroscopy (HX-HERS) Beamline of HEPS  
 
  • R.Z. Xu, M. Li, W.F. Sheng, S. Tang, H.H. Yu
    IHEP, Beijing, People’s Republic of China
  
  The KB mir­ror sys­tem de­signed for the HX-HERS beam­line was ex­pected to focus the spot size down to 2¿m×2¿m and achieve 5-DOF ad­just­ment of each mir­ror. How­ever, the long mir­ror length leaded large size of the over­all mech­a­nism and the lim­ited height space for multi-di­men­sional ad­just­ment makes the me­chan­i­cal de­sign of the KB sys­tem with both sta­bil­ity and func­tion­al­ity dif­fi­cult. In this KB sys­tem, each mir­ror is bent by a four-bar ben­der uni­ver­sally used in HEPS to ob­tain the re­quired pro­file. A com­bi­na­tion of par­al­lel and se­r­ial mech­a­nism with to­tally 11-DOF is de­signed to re­al­ize the ad­just­ment re­quire­ments. Specif­i­cally, the par­al­lel mech­a­nism is a three-point sup­port de­sign that serves as the base of the KB mir­ror cham­ber and of­fers coarse tun­ing of 5-DOF, ex­hibit­ing great com­pact­ness and high stiff­ness. The se­ries mech­a­nism is a stack­ing of four angle and two dis­place­ment ad­just­ment mech­a­nisms up to 6-DOF. These in­de­pen­dent stages with high res­o­lu­tion are as­signed to VFM and HFM re­spec­tively to achieve fine ad­just­ment of their rel­a­tive po­si­tions. In the de­sign of each angle and dis­place­ment ad­just­ment stage, the height and rigid­ity of the mech­a­nism are also fully con­sid­ered.  
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