Based on finite element analysis of thermal mechanical behavior, structural optimization design was proposed for a side cooling collimating mirror subjected to high heat load for a beamline at SSRF(Shanghai Synchrotro...Based on finite element analysis of thermal mechanical behavior, structural optimization design was proposed for a side cooling collimating mirror subjected to high heat load for a beamline at SSRF(Shanghai Synchrotron Radiation Facility). The temperature distribution,stress concentration effect, maximum equivalent(vonMises) stress, and slope error of the mirror were analyzed.In particular, the cooling water channels of the traditional structural design were optimized, and the modified designs were further optimized. Although the traditional structural and the improved designs could meet requirements for the temperature and thermal stress, the deformation gradients were relatively large for several structural designs, and this led to larger slope error. The further improved structural designs could be of better performance.展开更多
Background The peak power density of the hard X-ray nano-probe beamline is the highest at SSRF(Shanghai Synchrotron Radiation Facility).The peak power density of the front-end is 77.43 kW/mrad2,which is about 1.7 time...Background The peak power density of the hard X-ray nano-probe beamline is the highest at SSRF(Shanghai Synchrotron Radiation Facility).The peak power density of the front-end is 77.43 kW/mrad2,which is about 1.7 times higher than the others,for the fixed mask 1(FM1)which is 11,440 mm away from the light source.However,adopting the traditional design may cause the major power absorbed by the downstream fixed mask 2(FM2).Purpose In order to evenly absorb the heat and ensure smooth beam transmission.Methods The synchrotron beam tracing was performed,and the separate mask absorption approach was adopted.Additionally,finite element analysis(FEA)was conducted to analyze the thermodynamic behavior of FMs.Result Currently,the front-end has been successfully designed and is running smoothly.展开更多
基金supported by the National Natural Science Foundation of China(No.11175243)
文摘Based on finite element analysis of thermal mechanical behavior, structural optimization design was proposed for a side cooling collimating mirror subjected to high heat load for a beamline at SSRF(Shanghai Synchrotron Radiation Facility). The temperature distribution,stress concentration effect, maximum equivalent(vonMises) stress, and slope error of the mirror were analyzed.In particular, the cooling water channels of the traditional structural design were optimized, and the modified designs were further optimized. Although the traditional structural and the improved designs could meet requirements for the temperature and thermal stress, the deformation gradients were relatively large for several structural designs, and this led to larger slope error. The further improved structural designs could be of better performance.
基金supported by National Natural Science Foundation of China(No.11805262)Youth Innovation Promotion Association,Chinese Academy of Sciences(No.2020288).
文摘Background The peak power density of the hard X-ray nano-probe beamline is the highest at SSRF(Shanghai Synchrotron Radiation Facility).The peak power density of the front-end is 77.43 kW/mrad2,which is about 1.7 times higher than the others,for the fixed mask 1(FM1)which is 11,440 mm away from the light source.However,adopting the traditional design may cause the major power absorbed by the downstream fixed mask 2(FM2).Purpose In order to evenly absorb the heat and ensure smooth beam transmission.Methods The synchrotron beam tracing was performed,and the separate mask absorption approach was adopted.Additionally,finite element analysis(FEA)was conducted to analyze the thermodynamic behavior of FMs.Result Currently,the front-end has been successfully designed and is running smoothly.
