Overview:
The purpose of the final survey is to check the quality of all the individual
alignment steps by producing a current map of the new ring's fiducialized
magnetic elements. A network of observations consisting of mostly angles and
distances as well as heights is used to create this survey map.
Details:
Laser trackers and automatic levels are used to measure the fiducial points
along with the monuments placed throughout the SPEAR3 ring. Through geometrical
and statistical adjustment, an optimal coordinate solution is found and serves
as the final check on all the aligned components. The final survey also serves
as a future basis for monitoring movements of ring components or even the SPEAR3
building itself.