1. THE APPLICATION OF TRACKER WITH SA IN ALIGNMENT OF HIRFL-CSR
Institute of Modern Physics
THE APPLICATION OF TRACKER WITH SA IN ALIGNMENT OF HIRFL-CSR
Guozhu Cai, Kaidi Man, Shengli Yang, Shaoming Wang, Wenjun Chen，Jiandong Yuan IMP Lanzhou China
1. Introduction：
The Cooling Storage Ring is upgrade project of the Heavy Ion Research Facility in Lanzhou China(HIRFL), it consists of main ring (CSRm) and experimental ring (CSRe). The circumference of CSRm and CSRe is 161m and 128.8m respectively (see Figure. 1).
3. Getting and adjusting deviation
Every magnet held the own nominal part frame with different coordinate and rotated angle in the ring frame as well as built them in the SA. Best-fit actual data to nominal data in the nominal part frame, we can get the 7 parameters: ΔX, ΔY, ΔZ, Δφ, Δψ, Δω and Scale respectively, these parameters imply if the magnet need to be adjusted（see Figure 3 and Figure 4).
Figure4 .An example of actual data and nominal data of reference points on the magnet.
Figure3. Illustration of locating the instrument in the network
Figure1. Layout of Hirfl-CSR
2.surveying network
All the net points were measured, including the reference points on the magnets (8 reference points on every magnet were fiducialized previously), 8 leveling net points, and the nets on the wall, in the 14 stations one by one, and used USMN of SA to link the both adjacent stations and close loop around ring finally (see Figure.2) .
4.Best-fitting orbit
Each the center of Q-magnets will be used to best-fit the object of orbit, it was simulated by a 0.01mm thin plane of boundary of orbit shape was built by Catia V5. After solved, every magnet error can be show, it is clear answer that we need to know deviation to orbit ultimately.
Figure4. An illustration of best fitting orbit
5.Others useful function in SA
Drive others instruments and bundle adjustment together
Measurement plan for automated measurement
Survey simulation for planning and precision estimation
Figure2. Illustration of surveyed CSRm
Technique Condition, Institute of Modern Physics, Chinese Academy of Sciences (IMP,CAS)