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

fYear

2007

fDate

25-29 June 2007

Firstpage

2179

Lastpage

2181

Abstract

Pohang Accelerator Laboratory has prepared to SRF 3^rd 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;

fLanguage

English

Publisher

ieee

Conference_Titel

Particle Accelerator Conference, 2007. PAC. IEEE

Conference_Location

Albuquerque, NM

Print_ISBN

978-1-4244-0916-7

Type

conf

DOI

10.1109/PAC.2007.4441189

Filename

4441189