Title :
Microwave instability at transition crossing in the KEK-PS
Author :
Takayama, K. ; Arakawa, D. ; Kishiro, J. ; Koba, K. ; Toyama, T. ; Yoshii, M.
Author_Institution :
High Energy Accel. Res. Organ., Ibaraki, Japan
Abstract :
A microwave instability in the KEK proton synchrotron was systematically studied. The temporal evolution of the microwave instability was clearly explained with a proton-klystron model. Beam position monitors and cavity-like vacuum chambers have been identified as its driving sources. Replacement of these high impedance materials has been confirmed to reduce the growth of the instability to the expected level
Keywords :
particle beam diagnostics; particle beam stability; proton accelerators; storage rings; synchrotrons; KEK; KEK-PS; beam position monitor; microwave instability; proton synchrotron; proton-klystron model; vacuum chambers; Estimation theory; Frequency; Impedance measurement; Lattices; Particle beams; Proton accelerators; Resonance; Size control; Synchrotrons; Testing;
Conference_Titel :
Particle Accelerator Conference, 1997. Proceedings of the 1997
Conference_Location :
Vancouver, BC
Print_ISBN :
0-7803-4376-X
DOI :
10.1109/PAC.1997.750754
