Author: Lee, B.H.
Paper Title Page
WEPWA043 Construction of Injector Test Facility (ITF) for the PAL XFEL 2220
 
  • S.J. Park, H. J. Choi, T. Ha, J.H. Han, J.H. Hong, W.H. Hwang, H.-S. Kang, T.-H. Kang, D.T. Kim, J.M. Kim, S.-C. Kim, I.S. Ko, B.H. Lee, H.-S. Lee, W.W. Lee, C.-K. Min, Y.J. Park, Y.G. Son
    PAL, Pohang, Kyungbuk, Republic of Korea
  • M.S. Chae
    POSTECH, Pohang, Kyungbuk, Republic of Korea
  
  Funding: Work supported by the Ministry of Education, Science and Technology (MEST) in Korea.
An in­jec­tor test fa­cil­ity (ITF) for the PAL-XFEL has been suc­cess­fully con­structed and its com­mis­sion­ing is under way. The fa­cil­ity is to demon­strate beam per­for­mances re­quired by the PAL XFEL (beam en­ergy of 139 MeV, pro­jected rms emit­tance of < 0.5 mm mrad @ 200 pC, and beam rep­e­ti­tion rate of 60 Hz) with good enough sta­bil­i­ties. We have con­structed a ded­i­cated build­ing for the fa­cil­ity in which a ra­di­a­tion-shield­ing tun­nel (19.2-m long, 3.5-m wide, and 2.4-m high inner space), a kly­stron-mod­u­la­tor gallery, a laser room, and a con­trol room are in­stalled. The in­jec­tor con­sists of an in-house-de­vel­oped photo-cath­ode rf gun, a 30-mJ Ti:Sa laser sys­tem, two ac­cel­er­at­ing struc­tures (as well as two sets of kly­stron-mod­u­la­tor sys­tems), and var­i­ous di­ag­nos­tics as well as mag­nets & in­stru­men­ta­tions. The in­stal­la­tion of a trans­verse de­flect­ing cav­ity (S-band, 10-fs res­o­lu­tion) and a laser heater is sched­uled in 2013. In this ar­ti­cle we re­port on the fa­cil­ity con­struc­tion and some of the early com­mi­sison­ing re­sults.