002771845 001__ 2771845
002771845 005__ 20241016085101.0
002771845 0248_ $$aoai:cds.cern.ch:2771845$$pcerncds:FULLTEXT$$pcerncds:CERN:FULLTEXT$$pcerncds:CERN
002771845 0247_ $$2DOI$$9IOP$$a10.1088/1748-0221/16/11/P11009
002771845 037__ $$9arXiv$$aarXiv:2105.09116$$cphysics.acc-ph
002771845 037__ $$aFERMILAB-PUB-21-345-AD
002771845 035__ $$9arXiv$$aoai:arXiv.org:2105.09116
002771845 035__ $$9Inspire$$aoai:inspirehep.net:1864142$$d2024-10-15T18:21:05Z$$h2024-10-16T06:43:32Z$$mmarcxml$$ttrue$$uhttps://inspirehep.net/api/oai2d
002771845 035__ $$9Inspire$$a1864142
002771845 041__ $$aeng
002771845 100__ $$aCollamati, Francesco$$uINFN, Rome$$vINFN Sezione di Roma, Roma, Italy
002771845 245__ $$9arXiv$$aAdvanced assessment of Beam Induced Background at a Muon Collider
002771845 269__ $$c2021-05-19
002771845 260__ $$c2021-11-11
002771845 300__ $$a15 p
002771845 500__ $$9arXiv$$aRevised version 2
002771845 520__ $$9IOP$$aRenewed international interest in muon colliders motivates the continued investigation of the impacts of beam-induced background on detector performance. This continues the effort initiated by the Muon Accelerator Program and carried out until 2017. The beam-induced background from muon decays directly impacts detector performance and must be mitigated by optimizing the overall machine design, with particular attention paid to the machine detector interface region. In order to produce beam-induced background events and to study their characteristics in coordination with the collider optimization, a flexible simulation approach is needed. To achieve this goal we have chosen to utilize the combination of LineBuilder and Monte Carlo FLUKA codes. We report the results of beam-induced background studies with these tools obtained for a 1.5 TeV center of mass energy collider configuration. Good agreement with previous simulations using the MARS15 code demonstrates that our choice of tools meet the accuracy and performance requirements to perform future optimization studies on muon collider designs.
002771845 520__ $$9arXiv$$aRenewed international interest in muon colliders motivates the continued investigation of the impacts of beam-induced background on detector performance. This continues the effort initiated by the Muon Accelerator Program and carried out until 2017. The beam-induced background from muon decays directly impacts detector performance and must be mitigated by optimizing the overall machine design, with particular attention paid to the machine detector interface region. In order to produce beam-induced background events and to study their characteristics in coordination with the collider optimization, a flexible simulation approach is needed. To achieve this goal we have chosen to utilize the combination of LineBuilder and Monte Carlo FLUKA codes. We report the results of beam-induced background studies with these tools obtained for a 1.5 TeV center of mass energy collider configuration. Good agreement with previous simulations using the MARS15 code demonstrate that our choice of tools meet the accuracy and performance requirements to perform future optimization studies on muon collider designs.
002771845 540__ $$3preprint$$aarXiv nonexclusive-distrib 1.0$$uhttp://arxiv.org/licenses/nonexclusive-distrib/1.0/
002771845 65017 $$2arXiv$$ahep-ex
002771845 65017 $$2SzGeCERN$$aParticle Physics - Experiment
002771845 65017 $$2arXiv$$aphysics.acc-ph
002771845 65017 $$2SzGeCERN$$aAccelerators and Storage Rings
002771845 690C_ $$aCERN
002771845 690C_ $$aARTICLE
002771845 700__ $$aCuratolo, [email protected]$$uPadua U.$$uINFN, Padua$$vUniversity of Padova and INFN Sezione di Padova, Padova, Italy$$vINFN Sezione di Milano, Milano, Italy
002771845 700__ $$aLucchesi, Donatella$$uPadua U.$$uINFN, Padua$$vUniversity of Padova and INFN Sezione di Padova, Padova, Italy
002771845 700__ $$aMereghetti, Alessio$$uCERN$$vCERN, Geneva, Switzerland, currently at Fondazione CNAO, Pavia, Italy
002771845 700__ $$aMokhov, Nikolai$$uFermilab$$vFermilab, Batavia, Illinois, U.S.A.
002771845 700__ $$aPalmer, Mark$$uBrookhaven Natl. Lab.$$vBrookhaven National Laboratory, Upton, New York, U.S.A.
002771845 700__ $$aSala, Paola$$uINFN, Milan$$vINFN Sezione di Milano, Milano, Italy
002771845 773__ $$cP11009$$n11$$pJINST$$v16$$y2021
002771845 8564_ $$uhttps://lss.fnal.gov/archive/2021/pub/fermilab-pub-21-345-ad.pdf$$yFermilab Library Server
002771845 8564_ $$82301319$$s31488$$uhttps://cds.cern.ch/record/2771845/files/conmat_m.png$$y00001 Interaction region. The passive elements, the nozzles and the pipe around the interaction point are constituted by iron (Fe), borated polyethylene (BCH$_2$), berillium (Be), tungsten (W) and concrete. The detector outer shape is a $11.28$~m long cylinder of $6.3$ m radius. The space between the outer shape and the nozzles is considered as a perfect particle absorber (``blackhole''). The bunker is a $26$~m-long cylinder with a radius of $9$~m.
002771845 8564_ $$82301320$$s58492$$uhttps://cds.cern.ch/record/2771845/files/TOT2.png$$y00002 Energy distribution of BIB particles obtained with MARS15 code in solid blue line and the FLUKA program in dotted red line considering muon decays within 25 m from IP.
002771845 8564_ $$82301321$$s35962$$uhttps://cds.cern.ch/record/2771845/files/timetot.png$$y00004 Time distribution up to 100 nsec of BIB particles simulated with MARS15 (left plot) and FLUKA (right plot). Results for a $2\times10^{12}$~$\mu^-$ beam, decaying within 25~m from the IP.
002771845 8564_ $$82301322$$s168592$$uhttps://cds.cern.ch/record/2771845/files/3D_nozzle.png$$y00000 3D Visualization of the FLUKA geometry produced by LineBuilder by means of FLAIR~\cite{ref:FLAIR}.
002771845 8564_ $$82301323$$s1261100$$uhttps://cds.cern.ch/record/2771845/files/2105.09116.pdf$$yFulltext
002771845 8564_ $$82301324$$s142750$$uhttps://cds.cern.ch/record/2771845/files/tracks_tot.png$$y00008 BIB particle tracks along the ring and at the IR. Top: All particles but neutrons; middle: all particles including neutrons, tracks shown are relative to a reduced number of muon decays. Bottom: zoom in around the IP, tracks shown are relative to a single muon decay.
002771845 8564_ $$82301325$$s218309$$uhttps://cds.cern.ch/record/2771845/files/colmap_unico.png$$y00006 Colormap of the particles entering the detector represented in the x,z plane. From top to bottom a zoom in around the IP is shown. Results for a $2\times10^{12}$~$\mu^-$ beam, decaying within 25~m from the IP.
002771845 8564_ $$82301326$$s12952$$uhttps://cds.cern.ch/record/2771845/files/Mudec3.png$$y00006 Distribution of primary muon dacays generating Bethe-Heitler muons finally entering the detector.
002771845 8564_ $$82301327$$s79090$$uhttps://cds.cern.ch/record/2771845/files/Pies2.png$$y00008 Top--left frame: elements of the IR where the first interactions occur after the primary muon decay. Top--right frame: elements from which the BIB particles exit the machine. Bottom frame: sketch of the IR with the relevant region names and materials. Results for a $2\times10^{12}$~$\mu^-$ beam, decaying within 25~m from the IP.
002771845 8564_ $$82301328$$s71703$$uhttps://cds.cern.ch/record/2771845/files/NozzleYN.png$$y00009 Comparison of number and energy spectra of the BIB: with nozzles (Y) in solid red line and without nozzles (N) in dotted black line.
002771845 8564_ $$82301329$$s38682$$uhttps://cds.cern.ch/record/2771845/files/mudec.png$$y00005 Distribution of particle type entering the detector as a function of $z_{\mu}$, the longitudinal coordinate of the primary muon decay. Results for a $2\times10^{12}$~$\mu^-$ beam, decaying within 25~m from the IP.
002771845 8564_ $$82325702$$s60828$$uhttps://cds.cern.ch/record/2771845/files/Cumulative.png$$y00007 Cumulative distribution of particles exiting the machine by type, as a function of the primary muon decay longitudinal coordinate (left plot), and distribution of primary muon decays generating secondary muons (right plot). The total number of secondary muons is reported in the title.
002771845 8564_ $$82325703$$s266754$$uhttps://cds.cern.ch/record/2771845/files/1meveq_crop.png$$y00010 1~MeV neutron equivalent fluence in the detector region, normalized to one year of operation
002771845 8564_ $$82325704$$s394028$$uhttps://cds.cern.ch/record/2771845/files/tracks_ok.png$$y00002 Pictorial view of tracks of secondary particles in the IR and in the first magnets around the IR in case of few muon decays: all particles but neutrons (top frame) and all particles including neutrons (middle frame). Bottom frame: secondary particle tracks in case of a single muon decay in the proximity of the IP.
002771845 8564_ $$82325705$$s71449$$uhttps://cds.cern.ch/record/2771845/files/Energy1.png$$y00003 Energy distribution of BIB particles obtained with MARS15 in solid blue line and FLUKA in dotted red line. Results for a $2\times10^{12}$~$\mu^-$ beam, decaying within 25~m from the IP.
002771845 8564_ $$82325706$$s154473$$uhttps://cds.cern.ch/record/2771845/files/3D_nozzle1.png$$y00000 3D visualization (horizontal cut at beam height) by means of FLAIR~\cite{ref:FLAIR} of the FLUKA geometry of the MC IR simulated in the present work.
002771845 8564_ $$82336824$$s750981$$uhttps://cds.cern.ch/record/2771845/files/fermilab-pub-21-345-ad.pdf$$yFulltext
002771845 8564_ $$82336825$$s1310024$$uhttps://cds.cern.ch/record/2771845/files/document.pdf$$yFulltext from Publisher
002771845 960__ $$a13
002771845 980__ $$aARTICLE