Author: Yamashita, M.
Paper Title Page
THPC144 The Construction Status of Beam Transport Line from XFEL-linac to SPring-8 Storage Ring 3224
 
  • C. Mitsuda, N. Azumi, T. Fujita, K. Fukami, H. Kimura, H. Ohkuma, M. Oishi, Y. Okayasu, M. Shoji, K. Tsumaki, T. Watanabe
    JASRI/SPring-8, Hyogo-ken, Japan
  • M. Hasegawa, Y. Maeda, T. Nakanishi, Y. Tukamoto, M. Yamashita
    SES, Hyogo-pref., Japan
  • N. Kumagai, S. Matsui
    RIKEN/SPring-8, Hyogo, Japan
  
  The beam trans­port line from XFEL-linac to SPring-8 stor­age ring is now under con­struc­tion to use the ultra short bunched elec­tron beam at the stor­age ring. The newly con­struct­ed line is about 300 m, which is just a half of the whole path from the XFEL linac to the stor­age ring. The beam ex­tract­ed from XFEL-linac is guid­ed to the beam trans­port tun­nel con­nect­ed to the match­ing sec­tion of boost­er syn­chrotron bend­ing by 55.2 de­grees hor­i­zon­tal­ly and by 10.0 de­grees ver­ti­cal­ly. A dou­ble-bend based lat­tice was adopt­ed to rea­son­ably sup­press emit­tance growth and bunch length­en­ing. Sup­pos­ing a bunch length and hor­i­zon­tal emit­tance at the exit of the XFEL-linac are es­ti­mat­ed about 100 fs and 0.04 nmrad re­spec­tive­ly, it is ex­pect­ed that the cur­rent beam emit­tance in stor­age ring is im­proved to about 0.4 nmrad and al­most same bunch length in­clud­ing co­her­ent syn­chrotron ra­di­a­tion ef­fect. In 2010, the con­struc­tion of ex­tract­ing part from XFEL-linac was com­plet­ed and we fin­ished the in­stal­la­tion and align­ment of main com­po­nents. The con­cep­tu­al de­sign and con­struc­tion sta­tus of trans­port line will be pre­sent­ed with the em­pha­sis on the de­tail mag­net de­sign and the fab­ri­ca­tion.