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Effect of A Sinusoidal Field in a Switching Magnet for a Proton Beam Accelerator
Heung-Sik Kang,Chun-Kil Ryu,이희석,Hong-Gi Lee,Hong-Sik Han,Hyung-Seok Suh,Jinhyuk Choi,Ki-Hyeon Park,MunGyung Kim,Seong-Hun Jeong,Tae-Yeon Lee,Young-Gyu Jung 한국물리학회 2006 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.48 No.4
The 100-MeV Proton Engineering Frontier Project (PEFP) proton linac will provide two proton beam extraction lines at the 20-MeV and the 100-MeV end for users’ experiments. Each extraction line will be branched to 5 beamlines. To distribute the proton beam to each beamline, a switching magnet will be used. A conventional resonant AC-type power supply for the switching magnet, which supplies a current with a sinusoidal variation, causes some problems of sinusoidal field variation during the beam pulse duration and of magnet hysteresis. The effect of sinusoidal field variation is analyzed with the TRACE code by using the equivalent Twiss parameters. The effect of the magnet hysteresis is also described, and its solution is proposed.8消