THE APPLICATION OF TRACKER WITH SA IN ALIGNMENT OF HIRFL-CSR

1
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 730000
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
?X, ?Y, ?Z, ?f, ??, ?? 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
caiguozhu_at_impcas.ac.cn Technique Condition,
Institute of Modern Physics, Chinese Academy of
Sciences (IMP,CAS)