Method for the mechanical axis alignment of the linear induction accelerator

Accurate mechanical axis alignment is a basic requirement for assembling a linear induction accelerator (LIA). The total length of an LIA is usually over thirty or fifty meters, and it consists of many induction cells. By using a laser tracker a new method of mechanical axis alignment for LIA is established to achieve the high accuracy. This paper introduces the method and gives implimentation step and point position measure errors of the mechanical axis alignment. During the alignment process a 55mlong alignment control survey net is built, and the theoretic revision of the coordinate of the control survey net is presented.