IRES: US-Germany Joint Study of X-Ray Optics Thermomechanical Stability and Control

在这个由国际科学和工程办公室支持的IRES项目中，南佛罗里达大学Alex Volinsky教授指导下的美国研究生和本科生将参与两家德国机构的合作工程研究工作，这两所机构分别是德累斯顿的工业大学和汉堡的德国Elektronen-Synchotron(DESY)研究中心。在为期三年的课程中，共有15名美国学生将利用有限元(FE)建模和X射线衍射实验，以小组形式研究X射线光学热机稳定性的优化和控制。在国际访问之前，学生们将接受热机械建模和X射线衍射方面的特殊培训。国际合作者包括德累斯顿的德克·迈耶教授和DES的德米特里·诺维科夫教授。同步加速器和内部X射线源的X射线光学加热是一个主要问题，因为它会导致光束扭曲，并使光束调节成为一项具有挑战性的任务。表面温度只有1摄氏度的变化就会显著影响衍射X射线的波长，使其无法使用。目前用于冷却衍射型同步加速器光学元件的是液氮，但通过设计改进和优化，该项目的结果可以显著提高X射线光学元件的热机械稳定性，而不需要如此繁琐的操作条件。参与该项目的学生将在国际环境中获得宝贵的研究经验，有助于培养具有多学科和全球视野的新一代熟练技术劳动力。

In this IRES project supported by the Office of International Science and Engineering, U.S. graduate and undergraduate students under the direction of Professor Alex Volinsky at the University of South Florida will participate in a collaborative engineering research effort with two German institutions, the Technical University in Dresden and Deutsches Elektronen-Synchotron (DESY) research center in Hamburg. Over the course of three years a total of 15 U.S. students will work in teams on optimization and control of the thermomechanical stability of X-ray optics using both Finite Elements (FE) modeling and X-ray diffraction experiments. The students will receive special training in thermomechanical modeling and X-ray diffraction prior to their international visit. The international collaborators include Professor Dirk Meyer in Dresden and Professor Dmitri Novikov at DESY.Heating of X-ray optics is a major problem with synchrotrons and in-house X-ray sources, since it causes beam distortions and makes beam conditioning a challenging task. Only one degree Celsius change in surface temperature significantly affects the diffracted X-ray beam wavelength, rendering it unusable. Currently liquid nitrogen is used to cool diffraction-based synchrotron optics, but through design improvements and optimization the results of this project could help significantly to improve the thermomechanical stability of the X-ray optics without requiring such cumbersome operating conditions. The students involved in this project will gain an invaluable research experience in an international setting, helping contribute to the development of a new generation of a skilled technical workforce with a multidisciplinary and global perspective.