Title :
Resonant beam extraction with constant separatrix
Author :
Hiramoto, K. ; Tadokoro, M. ; Hirota, J. ; Nishi, M.
Author_Institution :
Energy Res. Lab., Hitachi Ltd., Ibaraki, Japan
Abstract :
A new scheme for slow beam extraction using nonlinear resonance is presented to realize small emittance. In the scheme, the amplitude of the betatron oscillations is increased by perturbations, while keeping the separatrix constant. As a measure of perturbation, the transverse filtered noise is studied in computer simulations. It is shown that the emittance of the extracted beam is vanishingly small. It is also shown that the time structure of the extracted current is not affected by the ripple in the magnet current
Keywords :
beam handling techniques; particle beam diagnostics; betatron oscillations; constant separatrix; emittance; magnet current; nonlinear resonance; resonant beam extraction; slow beam extraction; time structure; transverse filtered noise; Computer simulation; Electromagnetic fields; Extraterrestrial measurements; Fluctuations; Frequency; Laboratories; Magnetic resonance; Magnetic separation; Noise measurement; Particle beams;
Conference_Titel :
Particle Accelerator Conference, 1993., Proceedings of the 1993
Conference_Location :
Washington, DC
Print_ISBN :
0-7803-1203-1
DOI :
10.1109/PAC.1993.308931
