Author: Banerjee, D.
Paper Title Page
WEPAB185 Target Bypass Beam Optics for Future High Intensity Fixed Target Experiments in the CERN North Area 3046
 
  • G.L. D’Alessandro, D. Banerjee, J. Bernhard, M. Brugger, N. Doble, L. Gatignon, A. Gerbershagen, B. Rae, F.M. Velotti
    CERN, Meyrin, Switzerland
  • S.M. Gibson
    JAI, Egham, Surrey, United Kingdom
  
  Sev­eral of the pro­posed ex­per­i­ments for op­er­a­tion at the K12 beam line would profit from sig­nif­i­cant beam in­ten­sity in­crease. Among those, there is the KLEVER ex­per­i­ment that would re­quire an in­ten­sity of 2x1013 pro­tons per 4.8 s long spill. The main goal of the ex­per­i­ment is to mea­sure BR(KL->pi0 nu nu) to test the Stan­dard Model struc­ture by it­self, and in com­bi­na­tion with re­sults from NA62 for BR(K±>pi+ nu nu). NA62 could also profit from higher in­ten­si­ties, and could be run in a new con­fig­u­ra­tion called NA62HI(gher in­ten­sity). In the cur­rent con­fig­u­ra­tion the beam is trans­ported from the SPS to the TT24 beam­line. This beam­line leads to the T4 tar­get that at­ten­u­ates the beam for P42. After T4 the beam is di­rected into the P42 beam­line be­fore im­ping­ing on the T10 tar­get and cre­at­ing the par­ti­cles nec­es­sary for the ex­per­i­ment. Those are fi­nally trans­ported to the de­tec­tor via K12. This paper pre­sents the idea of par­tially by­pass­ing T4 and chang­ing the P42 beam­line con­fig­u­ra­tion in order to have a suf­fi­ciently small beam size at the T10 tar­get for both KLEVER and NA62-HI. Op­tics stud­ies are de­vel­oped in MADX and the AppLE.​py, soft­ware de­vel­oped at CERN.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-WEPAB185  
About • paper received ※ 17 May 2021       paper accepted ※ 01 July 2021       issue date ※ 27 August 2021  
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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  
Export • reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)  
 
THPAB143 M2 Experimental Beamline Optics Studies for Next Generation Muon Beam Experiments at CERN 4041
 
  • D. Banerjee, J. Bernhard, M. Brugger, N. Charitonidis, G.L. D’Alessandro, A. Gerbershagen, E. Montbarbon, C.A. Mussolini, E.G. Parozzi, B. Rae, B.M. Veit
    CERN, Geneva, Switzerland
  • L. Gatignon
    Lancaster University, Lancaster, United Kingdom
  
  In the con­text of the Physics Be­yond Col­lid­ers Pro­ject, var­i­ous new ex­per­i­ments have been pro­posed for the M2 beam­line at the CERN North Area fixed tar­get ex­per­i­men­tal fa­cil­ity. The ex­per­i­ments in­clude MUonE, NA64µ, and the suc­ces­sor to the COM­PASS ex­per­i­ment, ten­ta­tively named AMBER/NA66. The AMBER/NA66 col­lab­o­ra­tion pro­poses to build a QCD fa­cil­ity re­quir­ing con­ven­tional muon and hadron beams for runs up to 2024 in the first phase of the ex­per­i­ment. MUonE aims to mea­sure the hadronic con­tri­bu­tion to the vac­uum po­lar­iza­tion in the con­text of the (gµ-2) anom­aly with a setup longer than 40 m and a 160 GeV/c high in­ten­sity, low di­ver­gence muon beam. NA64µ is a muon beam pro­gram for dark sec­tor physics re­quir­ing a 100 - 160 GeV/c muon beam with a 15-25 m long setup. All three ex­per­i­ments re­quest sim­i­lar beam times up to 2024 with com­pelling physics pro­grams, which re­quired launch­ing ex­ten­sive stud­ies for in­te­gra­tion, in­stal­la­tion, beam op­tics, and back­ground es­ti­ma­tions. The ex­per­i­ments will be pre­sented along with de­tails of the stud­ies per­formed to check their fea­si­bil­ity and com­pat­i­bil­ity with an em­pha­sis on the up­dated op­tics for these next-gen­er­a­tion muon beam ex­per­i­ments.  
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DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-THPAB143  
About • paper received ※ 17 May 2021       paper accepted ※ 20 July 2021       issue date ※ 25 August 2021  
Export • reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)