The inclined coil assembly body which has been located to the borehole of the cylindrical magnet (20) it is structure for patsushibushimingu of the cylindrical magnet system which is included, direction is included is brought together to the direction where the aforementioned inclined coil assembly body is parallel with the axis of the cylindrical magnet, the part of the shim material (10) the tube which is accommodated (22). The part of the shim 10 material (10) it is level substantially, in order the axis of the cylindrical magnet to be located substantially vertically, the tube (22) it is accumulated in.< Selective figure >Figure 1円筒磁石の孔内に位置している傾斜コイル組立体(20)を含む円筒磁石システムのパッシブシミングのための構造であり、前記傾斜コイル組立体が円筒磁石の軸と平行な方向に向きを合わされ、シム材料の部品(10)を収容するチューブ(22)を含む。シム10材料の部品(10)は実質的に平面的であり、円筒磁石の軸と実質的に垂直に位置するようにチューブ(22)の中に積み重ねられている。【選択図】図1