一种用于扫描加速器磁铁横向场谐波的旋转线圈磁力计。

A Rotating-Coil Magnetometer for Scanning Transversal Field Harmonics in Accelerator Magnets.

作者信息

Arpaia Pasquale, Caiafa Gianni, Russenschuck Stephan

机构信息

Instrumentation and Measurement for Particle Accelerators Laboratory, Department of Electrical Engineering and Information Technology, University of Napoli Federico II, Naples, Italy.

Magnetic Measurements Section, Technology Department, European Organization for Nuclear Research, Geneva, Switzerland.

出版信息

Sci Rep. 2019 Feb 6;9(1):1491. doi: 10.1038/s41598-018-37371-3.

DOI:10.1038/s41598-018-37371-3

PMID:30728396

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC6365526/

Abstract

This paper presents a rotating-coil magnetometer that was designed and validated for scanning local transversal field harmonics, required for extracting so-called pseudo-multipoles in accelerator magnets. The magnetometer consists of four layers of flexible printed circuits with a track thickness of 40 μm. The design aimed at maximizing the sensitivity factors for field harmonics up to order 13 and at a compensation ratio for the main component in the same range of what is achievable with standard rotating coils. Key innovative features of the induction coil are the shape for minimizing the sensitivity to the longitudinal field component and the manufacturing technology. The design, the uncertainty analysis of the manufacturing tolerances, as well as preliminary application results are presented.

摘要

本文介绍了一种旋转线圈磁力计，该磁力计经过设计和验证，用于扫描局部横向场谐波，这是在加速器磁铁中提取所谓伪多极子所必需的。该磁力计由四层柔性印刷电路组成，线路厚度为40μm。其设计旨在最大化高达13阶的场谐波灵敏度因子，并使主分量的补偿率达到与标准旋转线圈相同的范围。感应线圈的关键创新特性在于其形状可将对纵向场分量的灵敏度降至最低以及制造技术。文中介绍了该设计、制造公差的不确定度分析以及初步应用结果。