Title :
Development of Measurement and Transverse Feedback System at HLS
Author :
Wang, J.H. ; Liu, J.H. ; Zheng, K. ; Li, W.M. ; Liu, Z.P. ; Sun, B.G. ; He, D.H. ; Yang, Y.L. ; Zhou, Z.R.
Author_Institution :
NSRL, USTC, P.R. China, wjhua@ustc.edu.cn
Abstract :
In order to cure and damp coupled bunch (CB) instabilities caused by the high order modes (HOMs) of the RF cavity and the resistive wall impedance of the Ring vacuum chamber. HOMs are ineluctable during the operation of the accelerator. An observer system characterized by bunch by bunch measurement of transverse β oscillation and longitudinal synchrotron phase oscillation has been constructed and commissioned at Hefei Light Source (HLS) [1, 2]. A transverse bunch-by-bunch feedback system is under construction. The design and development of the observe systems, as well as diagnostics results of machine instabilities are presented in this paper.
Keywords :
Charge measurement; Feedback; Frequency measurement; High level synthesis; Phase measurement; Power measurement; RF signals; Radio frequency; Storage rings; Structural beams;
Conference_Titel :
Particle Accelerator Conference, 2005. PAC 2005. Proceedings of the
Print_ISBN :
0-7803-8859-3
DOI :
10.1109/PAC.2005.1591332
