Thermal analysis of the first ultra-high heat-load front-end absorbers for the ultra-hard multi-functional X-ray beam-line at SSRF

摘要

The cooling structural design and thermal analysis of three representative high heat load components, namely fixed maskers (FM1, FM2-1 and FM2-2) in the first ultra-high heat-load front-end of the ultra-hard multifunctional x-ray beamline (BL12SW) at SSRF are carried out based on finite element analysis (FEA). By establishing the finite element models, and combining with the performance acceptance criteria of the materials under high heat load, the temperature distribution and thermal stress distribution of the components are analyzed, respectively. In addition, the influence of applied processing materials (oxygen-free high conductivity copper (OFHC), Glidcop®AL-15 and CuCrZr) and convection heat transfer coefficient (i.e., film coefficient, which can be controlled by the adjustment of flow value or the specific structural design) on the thermo-dynamic performance of the high heat load components is also explored to guide the structural, parametric and performance design of the high heat load elements at the synchrotron front-end.