Liu, J.Y. Qin, H. Yan, X.X. JACoW Publishing Geneva, Switzerland 2673-5520 978-3-95450-250-9 10.18429/JACoW-MEDSI2023-THPPP014 English 299-302 synchrotron radiation synchrotron-radiation controls simulation Contribution to a conference proceedings 2024 2024-07 https://doi.org/10.18429/JACoW-MEDSI2023-THPPP014 https://jacow.org/medsi2023/papers/thppp014.pdf 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.