Title :
A method of closed orbit correction under constraint conditions
Author :
Kim, K.H. ; Yujong Kim ; Kim, C. ; Choi, J. ; Lee, T.Y. ; Guinyun Kim ; Cho, M.H. ; Namkung, W. ; Ko, I.S.
Author_Institution :
Accelerator Lab., Pohang Inst. of Sci. & Technol., South Korea
Abstract :
We have developed the correction algorithm of the closed orbit distortion (COD) under the constraint condition where beam positions at particular points are not changed. The new algorithm is based on the modified PSINOM algorithm including the regularization process in order to avoid the inversion problem of the ill-posed response matrices. We have confirmed that the COD is well corrected with no orbit leak in the simulation and is in good agreement with the experiment
Keywords :
beam handling techniques; inverse problems; matrix algebra; particle accelerators; PSINOM algorithm; closed orbit correction; closed orbit distortion; constraint conditions; correction algorithm; ill-posed response matrices; inversion problem; regularization process; Constraint theory; Extraterrestrial measurements; Laboratories; Light sources; Magnets; Mirrors; Particle beams; Position measurement; Storage rings; Undulators;
Conference_Titel :
Particle Accelerator Conference, 2001. PAC 2001. Proceedings of the 2001
Conference_Location :
Chicago, IL
Print_ISBN :
0-7803-7191-7
DOI :
10.1109/PAC.2001.988175
