Ultralow field biplane nuclear magnetic resonance normally-guided main magnet and construction method thereof

• Main Authors: QU ZHENG, XU JINZHANG, WANG YI, ZHANG XUN, HU LIANGLIANG, WANG HANZHENG
• Format: Patent
• Language: Chinese; English
• Published: 26.11.2019
• Subjects: MEASURING; MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES; PHYSICS; TESTING

The invention discloses an ultralow field biplane nuclear magnetic resonance normally-guided main magnet and a construction method thereof. A set of regular octagonal coils are symmetrically arrangedthrough an axial direction. A set of regular octagonal coils comprise a large regular octagonal coil in the outer ring and a small regular octagonal coil in the inner ring. The small regular octagonalcoil is set within the width of the large regular octagonal coil, so that the small regular octagonal coil and the large regular octagonal coil in a set of regular octagonal coils are in the same onplane. According to the invention, a larger magnetic pole pitch can be acquired at lower cost, and the magnetic field uniform area with magnetic field fluctuation less than 100 ppm is larger. 本发明公开了一种超低场双平面核磁共振常导主磁体及其构建方法，通过轴线方向对称设置一组正八边形线圈，一组正八边形线圈包括外环的大正八边形线圈和内环的小正八边形线圈，且小正八边形线圈设置在大正八边形线圈的宽度范围内，从而使得一组正八边形线圈内的小正八边形线圈和大正八边形线圈处于同一平面上。本发明能在更低成本下获得更大的磁极间距，并使得磁场波动小于100ppm的磁场均匀区域更大。