Multi-pole magnet collimating method based on three-coordinate measuring machine

The application discloses a multi-pole magnet collimating method based on a three-coordinate measuring machine. The method comprises: S10, arranging a to-be-measured multi-pole magnet on a magnet support base; S20, measuring the position of the to-be-measured multi-pole magnet by using a three-coordinate measuring machine and establishing a reference coordinate system; S30, enabling a sensor to pass through an aperture of the to-be-measured multi-pole magnet and supporting the sensor on two electronically controlled translation stages; S40, measuring the position of the sensor by using the three-coordinate measuring machine and acquiring a position offset between the central axis of the sensor and the central axis of the to-be-measured multi-pole magnet; S50, determining whether the position offset is in a preset offset range; if so, indicating completion of magnetic field alignment of the to-be-measured multi-pole magnet; and if not, performing S60; and S60, adjusting the two electronically controlled transl