Title :
Acceleration of cocktail ions at the JAERI AVF cyclotron
Author :
Fukuda, M. ; Arakawa, K. ; Okumura, S. ; Nara, T. ; Ishibori, I. ; Nakamura, Y. ; Yokota, W. ; Agematsu, T. ; Tamura, H.
Author_Institution :
JAERI, Gunma, Japan
Abstract :
The ion species and energy of a cyclotron beam can be quickly changed using a cocktail acceleration technique. Cocktail beams of mass-to-charge (M/Q) ratio of 4 and 5 have been developed at the JAERI AVF cyclotron. Purity of the beam depends on the M/Q resolution of the cyclotron. The resolution has been estimated theoretically and experimentally. A radial spread of an internal beam bunch caused by phase slip of particles with a different M/Q value has been observed using a pulsed incident beam. For practical operation, some methods have been devised for avoiding intermixture of different ion species in a beam extracted from the cyclotron
Keywords :
cyclotrons; ion accelerators; particle beam bunching; AVF cyclotron; beam bunch; cocktail acceleration; cocktail ions; ion energy; ion species; mass-to-charge ratio; phase slip; radial spread; Accelerated aging; Acceleration; Biotechnology; Cyclotrons; Energy resolution; Estimation theory; Frequency estimation; Magnetic fields; Materials science and technology; Particle beams;
Conference_Titel :
Particle Accelerator Conference, 1999. Proceedings of the 1999
Conference_Location :
New York, NY
Print_ISBN :
0-7803-5573-3
DOI :
10.1109/PAC.1999.792652
