Title :
Double RF system for Landau damping and Robinson instability
Author :
Miyahara, Yoshikazu
Author_Institution :
Inst. for Solid State Phys., Tokyo Univ., Tanashi, Japan
Abstract :
The design considerations of a double RF system for Landau damping of longitudinal coupled bunch instability are presented. Experimental results on the double RF system constructed in SOR-RING are briefly described, and an analysis of Robinson instability additionally induced in the system is presented. In the double RF system it is possible to produce a very large spread in synchrotron frequency, which increases the threshold current of a coherent longitudinal instability. However, additionally induced Robinson instability limits the threshold current. The threshold current of Robinson instability can be increased considerably by selecting positive detuning in the Landau cavity
Keywords :
beam handling equipment; beam handling techniques; Landau cavity; Landau damping; Robinson instability; SOR-RING; longitudinal coupled bunch instability; positive detuning; synchrotron frequency; threshold current; Damping; Electron beams; Hafnium; Laboratories; Physics; Radio frequency; Solid state circuits; Synchrotron radiation; Threshold current; Voltage;
Conference_Titel :
Particle Accelerator Conference, 1989. Accelerator Science and Technology., Proceedings of the 1989 IEEE
Conference_Location :
Chicago, IL
DOI :
10.1109/PAC.1989.73301
