Design and Experiment of the Auto-alignment Control System for TPS Storage Ring Girder

The auto-alignment system is designed for aligning the magnet girder system with little manpower and time as well as improving the accuracy of girder system in the whole storage ring simultaneously. The system consists of absolute length gauges between two consecutive girders, laser position-sensitive devices (PSD) between two straight-section girders, and a precision inclination sensor on each girder. The more precise angle and length between two girders obtained from these sensors module, the more precise position that can then be located. A magnet girder system with six cam movers on three pedestals is designed to provide precise adjustments of six axes and align girders automatically driven by six electric motors. This chapter consists of the construction of system, auto-alignment process, and experimental results. In the auto-alignment process, a laser tracker is employed to acquire the data as the feedback one in auto-alignment process to locate the position of girders and to simulate the status of the whole TPS storage ring. Further verification of the proposed technique of auto-alignment based on the results of several experiments in this chapter is merited.