Active Shim Design of a 7 T Highly Homogeneous Superconducting Magnet for Lanzhou Penning Trap
文献类型：期刊论文
| 作者 | Du, J. J.1,2; Yuan, P.1; Wu, W.1 ; Ma, L. Z.1; Yang, X. L.1
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| 刊名 | IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY
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| 出版日期 | 2012-06-01 |
| 卷号 | 22 |
| 关键词 | Linear Programming L1-norm Shim Coil Design Spherical Harmonics |
| ISSN号 | 1051-8223 |
| DOI | 10.1109/TASC.2011.2176298 |
| 文献子类 | Article |
| 英文摘要 | Lanzhou Penning Trap (LPT) is now being developed for precise mass measurements in Institute of Modern Physics (IMP). Homogeneity of magnetic field in LPT was about 3 ppm when without active shimming, while the required value is less than 0.5 ppm. Linear programming algorithm was employed to design a 9-coil cylindrical shim set for main magnet in LPT. First, mesh on the cylinder and current paths are expressed by connectings between the grid nodes. Then current paths are calculated to compensate the high order components of magnet field through linear programming algorithm optimization. The resulting designs are relatively sparse and can be readily constructed. The method has good flexibility, which can uses current paths on any given surface to generate any order shim field and set allowable errors separately over different arbitrary regions of interest (ROI). Software simulation is used to evaluate the influence on field due to bend corners and limited current density for actual windings. |
| WOS关键词 | MRI |
| 语种 | 英语 |
| WOS记录号 | WOS:000307364700303 |
| 出版者 | IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC |
| 源URL | [http://119.78.100.186/handle/113462/48705]  |
| 专题 | 中国科学院近代物理研究所 |
| 通讯作者 | Du, J. J. |
| 作者单位 | 1.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China 2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Du, J. J.,Yuan, P.,Wu, W.,et al. Active Shim Design of a 7 T Highly Homogeneous Superconducting Magnet for Lanzhou Penning Trap[J]. IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY,2012,22. |
| APA | Du, J. J.,Yuan, P.,Wu, W.,Ma, L. Z.,&Yang, X. L..(2012).Active Shim Design of a 7 T Highly Homogeneous Superconducting Magnet for Lanzhou Penning Trap.IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY,22. |
| MLA | Du, J. J.,et al."Active Shim Design of a 7 T Highly Homogeneous Superconducting Magnet for Lanzhou Penning Trap".IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY 22(2012). |
入库方式： OAI收割
来源：近代物理研究所
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