Title :
Intensity dependent emittance-exchange in a high intensity proton synchrotron
Author :
Sakai, I. ; Machida, S. ; Adachi, T. ; Arakida, Y. ; Irie, Y. ; Kitakawa, K. ; Mori, Y. ; Shimosaki, Y. ; Someya, H. ; Yoshimoto, M.
Author_Institution :
KEK, Ibaraki, Japan
Abstract :
The acceptance of the KEK booster has large side value (272 π nm mrad in the horizontal plane and 61π mm mrad in the vertical plane). To increase the beam intensity we have been trying to achieve painting injection in the horizontal plane. The intensity-dependent emittance exchanges in the horizontal and vertical plane were measured by a method using a scraper and bump magnets method. In order to clarify the experimental results, multiparticle tracking was performed with self-consistent space-charge forces. The experimental and simulation results imply that a space-charge potential of a beam-induced coupling exists between the horizontal and vertical planes
Keywords :
accelerator magnets; electromagnets; particle beam injection; proton accelerators; space charge; synchrotrons; KEK booster; beam-induced coupling; bump magnets; high intensity proton synchrotron; horizontal plane; intensity dependent emittance-exchange; multiparticle tracking; painting injection; scraper method; self-consistent space-charge forces; space-charge potential; Apertures; Extraterrestrial measurements; Magnets; Painting; Particle beam injection; Particle beam measurements; Particle beams; Particle tracking; Protons; Synchrotrons;
Conference_Titel :
Particle Accelerator Conference, 2001. PAC 2001. Proceedings of the 2001
Conference_Location :
Chicago, IL
Print_ISBN :
0-7803-7191-7
DOI :
10.1109/PAC.2001.988050
