发明名称 |
Superconducting-magnet adjustment method |
摘要 |
There are provided the steps of: measuring a magnetic field in a predetermined space; and performing shimming by arranging a plurality of ferromagnetic shims in a superconducting magnet. The step of shimming includes arranging the plurality of shims at positions that make the magnetic field homogeneous, based on a result of measurement in the step of measuring the magnetic field and that provide a predetermined value of an electromagnetic force caused by the magnetic field to act on the plurality of shims. |
申请公布号 |
US9046587(B2) |
申请公布日期 |
2015.06.02 |
申请号 |
US201214360495 |
申请日期 |
2012.03.01 |
申请人 |
MITSUBISHI ELECTRIC CORPORATION |
发明人 |
Tanabe Hajime |
分类号 |
G01R33/3873;A61B5/055;G01R33/3815 |
主分类号 |
G01R33/3873 |
代理机构 |
Buchanan Ingersoll & Rooney PC |
代理人 |
Buchanan Ingersoll & Rooney PC |
主权项 |
1. A superconducting-magnet adjustment method for adjusting homogeneity of a magnetic field generated in a predetermined space by a superconducting magnet including a superconducting coil, comprising the steps of:
measuring the magnetic field in said predetermined space; and performing shimming by arranging a plurality of shims of a ferromagnetic material in the superconducting magnet, said step of shimming including arranging said plurality of shims at positions that make the magnetic field homogeneous, based on a result of measurement in said step of measuring the magnetic field and that provide an electromagnetic force generating a reaction force which acts, in a radially inward direction of the superconducting magnet, on said superconducting coil so that said reaction force cancels and reduces an expansive force which acts in a radially outward direction on the superconducting coil in a condition where said shims are not attached. |
地址 |
Chiyoda-Ku, Tokyo JP |