A long coil magnetic measurement system has been built at SSRC to measure the storage ring dipole magnet prototypes of SSRF. The system consists of a 2.2 m long coil and a control system. The basic design concept is to build a reliable

precise and automatic measurement system for integral magnetic field measurement. A multi-function LabVIEW application program was developed on a personal computer main control unit

with Microsoft Windows 98/2000. Several personal computer slot interface cards communicate with

and control the various devices. The control system is designed to be versatile

modular

expandable

maintainable

quick and easily reconfigurable in both hardware and software. The system is accurate enough to characterize the magnetic field quality of the storage ring dipole magnet prototypes.