In this article, we analyze magnetic measurements on the U50-II undulator. The U50-II undulator is a 50 mm period length NdFeB-based pure permanent-magnet undulator prototype. It is designed with 20 periods and delivers 0.88–0.17 T in the gap from 10 to 35 mm. The field integrals are measured on a Hall probe bench, and the measurements are compared with the stretched wire result. In the stretched wire setup, the field integral is measured with an accuracy of 2 mTmm. The details of the stretch wire probe setup, measurement procedure, and accuracy with Hall probe results are discussed.

中文翻译：

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使用拉伸线和霍尔探针方法进行磁场积分测量

在本文中，我们分析了 U50-II 波荡器的磁性测量。U50-II 波荡器是一个 50 毫米周期长度的 NdFeB 基纯永磁波荡器原型。它设计有 20 个周期，并在 10 到 35 毫米的间隙中提供 0.88-0.17 T。在霍尔探针台上测量场积分，并将测量结果与拉伸线结果进行比较。在拉伸线设置中，场积分的测量精度为 2 mTmm。讨论了拉伸线探头设置、测量程序和霍尔探头结果精度的详细信息。