Eddy Current Reduction in Fast Ramped Bending Magnets
Eddy Current Reduction in Fast Ramped Bending Magnets
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DOI：
10.1109/tasc.2006.870512
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发表时间：
2006-06
影响因子：
1.8
通讯作者：
M. Negrazus;D. George;V. Vrankovic;M. Werner
中科院分区：
文献类型：
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作者：
M. Negrazus;D. George;V. Vrankovic;M. Werner
在Paul Scherrer研究所（PSI/瑞士），计划开发一种用于癌症治疗的新质子台架。肿瘤体积的快速三维扫描技术是这种新机架的医学亮点之一。龙门架将由新的彗星质子回旋加速器驱动，它将提供连续波质子束。该光束的能量将通过快速降能装置进行调整。所有射束线磁体应尽可能快地跟随降能器的能量变化。因此，必须通过适当的磁体设计来减小束流线和机架的叠层弯曲磁体中的涡流效应。本文给出了快速切换的弯曲磁体的动态行为的测量和数值模拟，以及减少弯曲磁体中涡流的设计方案
At the Paul Scherrer Institute (PSI/Switzerland) a new proton gantry for cancer treatment is planned. A fast 3 dimensional scanning technique of the tumor volume is one of the medical highlights of this new gantry. The gantry will be driven by the new COMET proton cyclotron, which will deliver a cw proton beam. The energy of this beam will be adjusted by a fast degrader device. All beam line magnets should follow the energy changes of the degrader as fast as possible. Therefore the eddy current effects in the laminated bending magnets of the beam line and the gantry must be reduced by an appropriate magnet design. The paper shows measurements and numerical simulation of the dynamic behavior of the fast switched bending magnets and design schemes for eddy current reduction in the bending magnets