Author: Stummer, F.W.
Paper Title Page
WEPAB186 Studies for the K12 High-Intensity Kaon Beam at CERN 3049
 
  • G.L. D’Alessandro, D. Banerjee, J. Bernhard, M. Brugger, N. Doble, L. Gatignon, A. Gerbershagen, R. Marchevski, B. Rae, S. Schuchmann, F.W. Stummer, M.W.U. Van Dijk
    CERN, Geneva, Switzerland
  • S.T. Boogert, S.M. Gibson, L.J. Nevay
    JAI, Egham, Surrey, United Kingdom
  
  The NA62 ex­per­i­ment is a fixed tar­get ex­per­i­ment lo­cated in the North Area of CERN and has as main goal the mea­sure­ment of the branch­ing ratio of the rare decay K±>pi+vv. The pri­mary pro­ton beam from the SPS ac­cel­er­a­tor in­ter­acts with the T10 beryl­lium tar­get and the gen­er­ated 75 GeV/c sec­ondary par­ti­cles, con­tain­ing about 6% of pos­i­tive kaons, are trans­ported by the K12 beam­line to the NA62 ex­per­i­ment. Stud­ies in this paper pre­sent de­tailed sim­u­la­tions of the K12 beam­line de­vel­oped in both FLUKA and BDSIM codes, which re­pro­duce the cur­rent con­fig­u­ra­tion of K12 for the NA62 ex­per­i­ment. The beam op­tics pa­ra­me­ters of K12 are stud­ied in BDSIM and com­pared to MADX op­tics and track­ing cal­cu­la­tions. The mod­els in FLUKA and BDSIM are used for beam stud­ies and muon pro­duc­tion at var­i­ous lo­ca­tions along the beam­line, and the pa­ra­me­ters ob­tained from sim­u­la­tions are bench­marked against data recorded by the ex­per­i­ment. The im­pact of the Cherenkov kaon tag­ging de­tec­tor (CEDAR) on the beam qual­ity is cal­cu­lated for two dif­fer­ent gas com­po­si­tions in view of a pos­si­ble up­grade of the de­tec­tor.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-WEPAB186  
About • paper received ※ 17 May 2021       paper accepted ※ 01 July 2021       issue date ※ 27 August 2021  
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