This method of calculating a magnetic moment arrangement for magnetic field adjustment is characterized in that: a magnetic field distribution in a predetermined evaluation region in a magnetic field generating device provided with a magnetic field adjusting mechanism which adjusts a static magnetic field by arranging a magnetic moment is measured； a magnetic field error distribution, which is a difference between the measured magnetic field distribution and a predetermined target magnetic field intensity in the evaluation region, is calculated； and when the magnetic field error distribution is being decomposed into components of each specific mode of the magnetic field generated by the magnetic field generating device, obtained by means of singular value decomposition, the arrangement of the magnetic moment which approximately adjusts the magnetic field error distribution is calculated by combining adjustments of components of low-order modes and adjustment of components of high-order modes, from among the specific modes, where the low-order modes are a group of specific modes, from a first specific mode to a specific mode having a specific mode number specified by a first threshold, said specific mode numbers being assigned to each specific mode in order of increasing singular value, and the high-order modes are a group of specific modes having specific mode numbers larger than the first threshold, the amounts by which the high-order mode components are adjusted being less than the amounts by which the low-order modes components are adjusted.L'invention concerne un procédé de calcul d'un agencement de moment magnétique pour un réglage de champ magnétique, qui est caractérisé par le fait que : une distribution de champ magnétique dans une région d'évaluation prédéterminée dans un dispositif de génération de champ magnétique comprenant un mécanisme de réglage de champ magnétique, qui règle un champ magnétique statique en agençant un moment magnétique, est mesurée ；
