Development of a procedure to optimize magnetic shielding for spin precession experiments like nEDM

在这个子项目中，将研究不同金属钼试样在退磁过程中的行为。为此，我们将建立一个实验设备，对复杂的多金属零件进行退磁。使用该设备，我们将优化这些测试样品的退磁过程。我们将进行一系列测试，测量测试样品表面的剩磁和梯度，以及它们的屏蔽系数。我们将对原型机的所有重要部件进行磁性研究。为此，将建立一个midi SQUID系统，在具有狭窄几何形状的样品表面附近进行矢量测量。将开发一个midi机器人来执行这些具有高重复性的调查。

In this sub-project the behaviour of different mu-metal test samples will be investigated during their demagnetization. To this end, we will set up an experimental equipment to demagnetize complex mu-metal parts. Using this equipment, we will optimize the demagnetization process for these test samples. We will perform test series to measure the residual magnetism and the gradients on the surfaces of the test samples as well as their shielding factors. We will investigate magnetically all parts essential for the prototype. To this end a midi SQUID System will be set up to perform vector measurements near the surface of samples with narrow geometries. A midi robot will be developed to perform these investigations with a high reproducibility.