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The needed electrical current for the magnet working under different energy loads can be easily calculated once the right relation between the magnet and the electrical current has been found.Therefore the excitation curve calibration for the magnet system is important to the SSRF.The measuring method on the magnet and the result of the excitation curve calibration are presented.The application of the excitation curve calibration for the bending magnet is given,and it is proved that the COD(Closed Orbit Distortion) and the working point of the storage ring are greatly affected by the current of the bending magnet.
The needed electrical current for the magnet working under different energy loads can be easily calculated once the right relation between the magnet and the electrical current has been found. Herefore the excitation curve calibration for the magnet system is important to the SSRF.The measuring method on the magnet and the result of the excitation curve calibration are presented. the application of the excitation curve calibration for the bending magnet is given, and it is proved that the COD (Closed Orbit Distortion) and the working point of the storage ring are greatly affected by the current of the bending magnet.