UNIFORM MAGNETIC FIELD MEASUREMENT METHOD FOR UNIFORM MAGNETIC FIELD GENERATION ELECTROMAGNET DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a uniform magnetic field measurement method for a uniform magnetic field generation electromagnet device, allowing synchronization between position data of a magnetic field sensor and data on a magnetic flux density when using a uniform magnetic field measurement device scanning the magnetic field sensor by manual operation.SOLUTION: When scanning a magnetic field sensor 20 in an axial direction of a uniform magnetic field generation electromagnet device 1 by manual operation of a person by use of a non-magnetic linear encoder 24 having a plurality of slits 26 and a reflection type photosensor 22 capable of irradiating the slits 26 of the linear encoder 24, the slits 26 of the linear encoder 24 are irradiated by the photosensor 22, a signal outputted from the photosensor 22 according to a pitch of the slits 26 is set as a trigger, and data on a magnetic flux density acquired when the trigger signal is outputted are associated to position data of the magnetic field sensor 20 acquired in a laser displacement sensor 42 when the trigger signal is outputted.