Author: Noels, C.
Paper Title Page
TUOAA03 The Linac4 Project at CERN 900
 
  • M. Vretenar, L. Arnaudon, P. Baudrenghien, C. Bertone, Y. Body, J.C. Broere, O. Brunner, M.C.L. Buzio, C. Carli, F. Caspers, J.-P. Corso, J. Coupard, A. Dallocchio, N. Dos Santos, R. Garoby, F. Gerigk, L. Hammouti, K. Hanke, M.A. Jones, I. Kozsar, J.-B. Lallement, J. Lettry, A.M. Lombardi, L.A. Lopez Hernandez, C. Maglioni, S.J. Mathot, S. Maury, B. Mikulec, D. Nisbet, C. Noels, M.M. Paoluzzi, B. Puccio, U. Raich, S. Ramberger, C. Rossi, N. Schwerg, R. Scrivens, G. Vandoni, J. Vollaire, S. Weisz, Th. Zickler
    CERN, Geneva, Switzerland
 
  As the first step of a long-term pro­gramme aim­ing at an in­crease in the LHC lu­mi­nos­i­ty, CERN is build­ing a new 160 MeV H lin­ear ac­cel­er­a­tor, Linac4, to re­place the age­ing 50 MeV Linac2 as in­jec­tor to the Pro­ton-Syn­chrotron Boost­er (PSB). Linac4 is an 86-m long nor­mal-con­duct­ing linac made of an H source, a Radio Fre­quen­cy Quadrupole (RFQ), a chop­ping line and a se­quence of three ac­cel­er­at­ing struc­tures: a Drift-Tube Linac (DTL), a Cell-Cou­pled DTL (CCDTL) and a Pi-Mode Struc­ture (PIMS). The civil en­gi­neer­ing has been re­cent­ly com­plet­ed, and con­struc­tion of the main ac­cel­er­a­tor com­po­nents has start­ed with the sup­port of a net­work of in­ter­na­tion­al col­lab­o­ra­tions. The low-en­er­gy sec­tion up to 3 MeV in­clud­ing a 3-m long 352 MHz RFQ en­tire­ly built at CERN is in the final con­struc­tion phase and is being in­stalled on a ded­i­cat­ed test stand. The pre­sent sched­ule fore­sees beam com­mis­sion­ing of the ac­cel­er­a­tor in the new tun­nel in 2013/14; the mo­ment of con­nec­tion of the new linac to the CERN ac­cel­er­a­tor chain will de­pend on the LHC sched­ule for long shut-downs.  
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