Title :
Analysis of BEPCII optics using orbit response matrix
Author_Institution :
IHEP, Beijing
Abstract :
Due to the errors in all kinds of components of storage ring, the real ring optics is different from the design one. A computer code LOCO was developed at SLAC to calibrate the linear optics based on the closed orbit response matrix. This paper discusses mainly on the procedure and results of optics correction at BEPCII BPR. Using LOCO, we determined the errors of quadrupole strengths,BPM gains and corrector kicks, and found the quadrupole strengths that best restore the design optics with sextupoles on. Optics measurement after correction shows the real optics agrees well with the design one.
Keywords :
beam handling techniques; electron accelerators; linear accelerators; optics; physics computing; storage rings; synchrotron radiation; BEPCII BPR; BEPCII optics; BPM gains; LOCO; SLAC; computer code; corrector kicks; linear optics; orbit response matrix; quadrupole strengths; sextupoles; storage ring; synchrotron radiation; Business process re-engineering; Computer errors; Electron optics; Extraterrestrial measurements; Gain measurement; Noise measurement; Optical design; Positrons; Storage rings; Strontium;
Conference_Titel :
Particle Accelerator Conference, 2007. PAC. IEEE
Conference_Location :
Albuquerque, NM
Print_ISBN :
978-1-4244-0916-7
DOI :
10.1109/PAC.2007.4440817
