Development Of Field Integral Measurement Facilities And Research On Related Technology Of Insertion Devices

Insertion device is widely applied to Synchrotron Radiation Light Source and Free Electron Laser. Magnetic measurement is the important method of examining the field performance of insertion devices. It need to measure the first field integral, the second field integral, phase error and peak field error. The work is too heavy for many data and repeatedly measurement and adjustment. The measurement demands high accuracy and speed.The work of this dissertation is divided into two parts. The main part is developing the new fast magnetic measurement systems, and the other part is investigating the related magnetic technology of insertion device. It includes in detail: (1)developing a stretched wire magnetic measurement system and providing the detailed hardware list and control software process; 2)measuring and adjusting one SDUV-FEL undulator using the stretched-wire system; (3) developing a pulsed wire magnetic measurement system, measuring a electromagnetic EPU to be installed in NSRL and obtaining the current relation between the main coils and correct coils; (4) magnetic measurement of all SDUV-FEL magnet blocks using Helmholtz coil system, magnet block selection, magnet sorting by using Simulated Annealing; (5)investigation of improving the transverse field homogeneity of APPLE-II Elliptically Polarized Undulator.