Title :
Matching section to the RFQ using permanent magnet symmetric lens
Author :
Kando, M. ; Ikegami, M. ; Dewa, H. ; Fujita, H. ; Shirai, T. ; Okamoto, H. ; Iwashita, Y. ; Kakigi, S. ; Noda, A. ; Inoue, M.
Author_Institution :
Inst. for Chem. Res., Kyoto Univ., Japan
Abstract :
A permanent magnet symmetric (PMS) lens is considered as the final focusing element for the RFQ linac at ICR. The PMS lens, which produces strong axial magnetic field like a solenoid lens, is composed of radially magnetized permanent magnet rings. Because of the low injection energy (50 keV) and a relatively high beam current intended (20 mA), space-charge effects should be taken into account. The beam tracking code PARM-SYL is developed for the purpose, which first reads an output file from PANDIRA for the PMS field and then numerically integrates the equation of motion including the space-charge force The matching section to the RFQ is designed using this code and TRACE-3D
Keywords :
beam handling equipment; lenses; magnetic lenses; particle beam dynamics; particle beam focusing; permanent magnets; proton accelerators; 20 mA; 50 keV; ICR; PANDIRA; PARM-SYL; RFQ linac; TRACE-3D; beam tracking code; equation of motion; final focusing element; matching section; permanent magnet symmetric lens; radially magnetized permanent magnet rings; space-charge effects; strong axial magnetic field; Chemicals; Lenses; Linear particle accelerator; Magnetic anisotropy; Magnetic fields; Magnetic materials; Optical materials; Permanent magnets; Perpendicular magnetic anisotropy; Solenoids;
Conference_Titel :
Particle Accelerator Conference, 1995., Proceedings of the 1995
Conference_Location :
Dallas, TX
Print_ISBN :
0-7803-2934-1
DOI :
10.1109/PAC.1995.505381
