Title :
Closed orbit correction of HLS storage ring
Author :
Li, Jingyi ; Liu, Gongfa ; Li, Weimin ; Sun, Baogen ; Diao, Caozheng ; Liu, Zuping
Author_Institution :
Nat. Synchrotron Radiat. Lab, Hefei, China
fDate :
6/23/1905 12:00:00 AM
Abstract :
The closed orbit of the stored electrons in HLS storage ring often shifts due to some nonideal errors. In order to correct this shift, we developed an orbit correction system which can be periodically or manually invoked to correct the globally closed orbit. It can also be used to adjust the orbit position at some point using a local bump. The system is based upon EPICS (Experimental Physics and Industrial Control system). It gets the BPM data and sets the corrector strength via Channel Access. An SVD method is used to obtain the corrector strength or corrector factors in global or local orbit corrections
Keywords :
accelerator RF systems; beam handling equipment; electron accelerators; electron beams; high energy physics instrumentation computing; particle beam dynamics; particle beam stability; storage rings; BPM data; EPICS; HLS storage ring; Hefei Light Source; SVD method; channel access; closed orbit correction; corrector factors; globally closed orbit; local bump; nonideal errors; stored electrons; synchrotron light source; Electrons; Extraterrestrial measurements; High level synthesis; Industrial control; Light sources; Motion measurement; Nonlinear distortion; Physics; Power supplies; Storage rings;
Conference_Titel :
Particle Accelerator Conference, 2001. PAC 2001. Proceedings of the 2001
Print_ISBN :
0-7803-7191-7
DOI :
10.1109/PAC.2001.986645
