Title :
HOM analysis and design of its removal system for 3rd harmonic RF cavity in PLS
Author :
Sohn, Y.U. ; Choi, J. ; Park, I.S. ; Chun, M.H. ; Huang, J.-Y. ; Ko, I.S.
Author_Institution :
PAL, Pohang
Abstract :
Pohang Accelerator Laboratory has prepared to SRF 3rd harmonic cavity to increase beam lifetime and to damp orbit instability by lengthening electron bunch in PLS. The SRF cavity was developed and its vertical test was done already with success. Higher order modes were analyzed to optimize its performance in beam orbit. Most of them are not effective to electron beam, while the others have possibility to impact orbit stability. These harmful HOMs can be removed by HOM absorber installed in beam pipe.
Keywords :
accelerator RF systems; accelerator cavities; beam handling techniques; electron accelerators; electron beams; particle beam bunching; particle beam stability; storage rings; HOM analysis; ITS removal system; PLS; Pohang accelerator laboratory; SRF cavity; beam lifetime; beam pipe; damp orbit instability; electron beam; electron bunch; harmonic RF cavity; impact orbit stability; Brightness; Electron beams; Harmonic analysis; Particle beams; Radio frequency; Research and development; Shape; Stability; Storage rings; Superconducting magnets;
Conference_Titel :
Particle Accelerator Conference, 2007. PAC. IEEE
Conference_Location :
Albuquerque, NM
Print_ISBN :
978-1-4244-0916-7
DOI :
10.1109/PAC.2007.4441189
