Magnetic field reconstruction using the pulsed wire method: An accuracy analysis
Magnetic field reconstruction using the pulsed wire method: An accuracy analysis
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DOI：
10.1016/j.measurement.2022.110873
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发表时间：
2022-03-03
期刊：
影响因子：
5.6
通讯作者：
Casalbuoni, Sara
中科院分区：
文献类型：
--
作者：
Baader, Johann Eduardo;Casalbuoni, Sara
了解如何通过脉冲线法 (PWM) 重建磁场分布对于表征具有有限磁隙可达性的波荡器至关重要。本文提出了一种新的数据处理方法，用于从 PWM 重建波荡器磁场轮廓。我们通过数值模拟研究恢复局部波荡器参数和均方根（RMS）相位误差的新方法的准确性和精度。由于导线参数的不确定性，在最好的情况下，PWM 可以达到大约 10(-3) 的精度来重建局部波荡器参数，以及大约 10(-5) 的精度（确定磁场质量所需）。此外，我们的结果表明，可以以优于 0.2 度的精度确定 RMS 相位误差。这一贡献开启了应用 PWM 在先进光源的小间隙短周期长波荡器中执行磁场重建的可能性。
Learning how to reconstruct the magnetic field profile from the pulsed wire method (PWM) is of fundamental importance to characterize undulators with limited magnetic gap accessibility. This paper presents a new data processing approach to reconstruct undulator magnetic field profiles from the PWM. We study via numerical simulations the accuracy and precision of the novel approach to recover the local undulator parameter and the root-mean-square (RMS) phase error. Due to the wire parameters uncertainties, the PWM can, in the best case, reach an accuracy of approximately 10(-3) to reconstruct the local undulator parameter, and a precision (needed to determine the magnetic field quality) of about 10(-5). Furthermore, our results show that the RMS phase error can be determined with a precision better than 0.2 degrees. This contribution opens the possibility to apply the PWM to perform magnetic field reconstruction in small-gap short-period long undulators for advanced light sources.