用于MAGIX @ MESA和MAMI电子散射实验的低温超音速射流靶
A Cryogenic Supersonic Jet Target for Electron Scattering Experiments at MAGIX@MESA and MAMI
摘要：
多年来，高性能的团簇射流靶一直是强子和激光等离子体物理的理想选择和应用对象。因此，即将在未来能量回收电子加速器MESA上进行的MAGIX实验将使用团簇射流靶对电子散射实验进行高精度测量，即，质子半径的测定为此目的，考虑到MAGIX实验装置的要求，在明斯特大学设计、制造并成功地投入运行了一个团簇射流靶。这些要求的细节，实现这些要求的计算，例如，喷嘴几何形状和目标气体的停滞条件、它们的技术实现和使目标成为强大的现有技术目标的目标的特征在该出版物中被突出。此外，使用马赫-曾德尔干涉仪测量和分析的射流光束特性从这个目标，并进行了讨论。这些是最感兴趣的完整的实验装置的MAGIX的最终设计。此外，第一次测量从调试束时间执行与目标安装在已经运行的MAinzer MIkrotron。
英文摘要：
High-performance cluster-jet targets are ideally suited and applied since years in hadron and laser plasma physics. Therefore, the forthcoming MAGIX experiment at the future energy recovering electron accelerator MESA will use a cluster-jet target to perform high precision measurements on electron scattering experiments, i.e., determination of the proton radius. For this purpose, a cluster-jet target was designed, built up and set successfully into operation at the University of Münster considering the requirements of the experimental setup of MAGIX. The details on these requirements, calculations to their realization, e.g., on the nozzle geometry and stagnation conditions of the target gas, their technical implementation and the features of the target which make the target a powerful state-of-the-art target, are highlighted in this publication. Furthermore, the measured and analysed jet beam characteristics from this target using a Mach Zehnder interferometer are presented and discussed. These are of highest interest for the final design of the complete experimental setup of MAGIX. Moreover, first measurements from commissioning beam times performed with the target installed at the already running MAinzer MIkrotron will be presented.
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