Laser und XFEL Experiment (LUXE) accelerator and physics studies

量子电动力学(QED)是光与物质相互作用的相对论量子理论，是目前科学上最精确的理论。该理论的精度建立在微扰理论的基础上，在较高的激光强度下，非线性现象变得明显。这些非线性现象可以比作理论量子电动力学，这也是LUXE实验的主要目的。LUXE将电子(或来自电子的二次光子)与高功率激光碰撞，这将允许对非线性QED进行详细探测。所需实验的大约一半是电子加速器，也就是欧洲自由电子激光器(XFEL.EU)，LUXE的成功需要大量的加速器物理活动。这些活动有很多，将有助于博士论文，其中包括(不只是)1.加速器综合体、束流仪器和束流背景的模拟。束流仪器在LUXEIII测量和模拟中的集成。电子束引射器的设计。逆康普顿散射室的设计。碰撞数据的分析与仿真。相干韧致辐射作为光子源的研究博士论文的核心将是与LUXE核心物理任务相关的一系列实验和模拟。本文将围绕LUXE数据采集的开始结束，该项目可能会以一些(有限的)实验调试数据结束。这名学生将成为国际粒子物理学家组织LUXE Collaboration的成员。为了进行协作，学生可能必须承担常见的任务。该合作将在博士期间发表多项成果，包括技术设计报告、物理影响论文和高影响力的期刊出版物。预计该学生将成为这些出版物的共同作者。学生还将加入与其博士研究相关的特定主题的专门工作组。LUXE实验是在德国高能物理国家实验室(DESY)进行的，根据实验的需要、他们的个人培训和承诺，他们可能会经常访问或停留更长时间。

Quantum Electrodynamics (QED), the relativistic quantum theory how light interacts with matter, is currently the most precise theory in science. The precision of this theory is based on perturbation theory and at higher laser light intensities non-linear phenomena become significant. These non-linear phenomena can be compared to theoretical QED, and this is the primary aim of the LUXE experiment. LUXE will collide electrons (or secondary photons from electrons) with a high-power laser, this will allow a detailed probe of non-linear QED. Approximately half of the required experiment is the electron accelerator, which is the European Free Electron Laser (XFEL.EU) and numerous accelerator physics activities are required for the success of LUXE. These activities are numerous and will contribute to the PhD thesis, these include (not exclusively) i. simulation of the accelerator complex, beam instrumentation and beam backgroundsii. integration of beam instrumentation in the measurement and simulation of LUXEiii. design of the electron beam dumpiv. design of the inverse Compton scattering chamberv. analysis and simulation of the collision datavi. investigation of coherent bremsstrahlung as a photon sourceThe core of the PhD thesis will be a range of experiments and simulations that are related to core physics mission of LUXE. The thesis will end around the start of data taking for LUXE, and the project will probably conclude with some (limited) experimental commissioning data. The student will become a member of the LUXE collaboration, an international group of particle physicists. The student might have to undertake common tasks for the collaboration. The collaboration will publish multiple outputs during the PhD including a technical design report, physics impact papers, and high impact journal publications. It is expected that the student will be a co-author on these publications. The student will also join dedicated working groups for specific topics related to their PhD research. The LUXE experiment is based at the German national laboratory for high energy physics (DESY), and they might be expected to visit frequently or have a longer stay, compatible with the needs of the experiment, their personal training and commitments.