A novel fiber-optic measurement system for superconducting accelerator magnets is described. The principal component is an extrinsic Fabry-Perot interferometer to determine localized strain and stress in coil windings. The system can be used either as a sensitive relative strain measurement system or as an absolute strain detector. Combined, one can monitor the mechanical behaviour of the magnet system over time during construction, long time storage and operation. The sensing mechanism is described, together with various tests in laboratory environments. The test results of a multichannel test matrix to be incorporated first in the dummy coils and then in the final version of a 13 T Nb/sub 3/Sn accelerator dipole magnet are presented. Finally, the possible use of this system as a quench localization system is proposed.
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机译：描述了一种用于超导加速器磁体的新型光纤测量系统。主要组件是外部法布里-珀罗干涉仪，用于确定线圈绕组中的局部应变和应力。该系统既可以用作敏感的相对应变测量系统，也可以用作绝对应变检测器。结合起来，可以在施工，长时间存储和运行期间随时间监视磁体系统的机械性能。描述了传感机制以及实验室环境中的各种测试。提出了一个多通道测试矩阵的测试结果，该矩阵首先要包含在虚拟线圈中，然后是最终版本的13 T Nb / sub 3 / Sn加速器偶极磁体。最后，提出了将该系统作为淬火定位系统的可能用途。
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