Title :
Fringe Field Interference Research on Quadrupole-Sextupole Assembly in BEPC-II
Author :
Chen, Yuanfeng ; Wang, Shuhui ; Qin, Qianqing ; Kang, Wei ; Peng, Q.L. ; Fang, S.X.
Author_Institution :
Accel. Res. Center, Inst. of High Energy Phys., Beijing, China
Abstract :
Many compact accelerators are increasingly popular nowadays. The studies on fringe field interference effect between adjacent magnets are becoming more important. Based on the 3-D multipole expansion technique, the integrated gradient deviation in a quadrupole magnet due to the appearance of neighboring sextupole is investigated. The quad-sext interference effect had been evaluated for BEPC-II. The relative impacts on accelerator tune shift will be obtained further and confirmed by experiments finally.
Keywords :
cyclic accelerators; electromagnetic wave interference; magnets; 3D multipole expansion technique; BEPC-II; compact accelerators; fringe field interference research; integrated gradient deviation; magnets; quad-sext interference effect; quadrupole sextupole assembly; Assembly; Interference; Magnetic fields; Magnetic tunneling; Particle beams; Solid modeling; Three-dimensional displays; Magnetic fringe field; magnetic interference; multipole expansion; tune shift;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
DOI :
10.1109/TASC.2013.2282662
