Title :
Design of a third harmonic Landau cavity for the SRRC storage ring
Author :
Wang, Ch. ; Chang, L.H. ; Yang, T.T. ; Tzeng, R.H. ; Lin, M.C. ; Lau, W.K. ; Kuo, C.C.
Author_Institution :
Synchrotron Radiat. Res. Center, Hsinchu, Taiwan
Abstract :
We present here our design of the SRRC third-harmonic Landau cavity to be operated on the first stage in a passive mode for bunch lengthening so as to increase the Touschek life-time. Its implementation will also be helpful for suppression of the longitudinal coupled-bunch instabilities observed in the storage ring of SRRC. The cavity profile was optimized with the 2D code URMEL with the following criteria: (1) maximization of the shunt impedance; (2) minimization of the maximal power flow density on the cavity surface; (3) feasibility of the mechanical constructions. A prototype is now under construction
Keywords :
accelerator cavities; electron accelerators; storage rings; 2D code; SRRC storage ring; SRRC third-harmonic Landau cavity; Touschek lifetime; URMEL; bunch lengthening; cavity profile; longitudinal coupled-bunch instabilities; maximal power flow density; mechanical constructions; passive mode; shunt impedance; third harmonic Landau cavity; Aluminum; Copper; Load flow; Neck; Prototypes; Storage rings; Structural beams; Surface impedance; Undulators; Voltage;
Conference_Titel :
Particle Accelerator Conference, 1997. Proceedings of the 1997
Conference_Location :
Vancouver, BC
Print_ISBN :
0-7803-4376-X
DOI :
10.1109/PAC.1997.753105
