Author: De Maria, R.
Paper Title Page
MOPAB006 Optics Configurations for Improved Machine Impedance and Cleaning Performance of a Multi-Stage Collimation Insertion 57
 
  • R. Bruce, R. De Maria, M. Giovannozzi, N. Mounet, S. Redaelli
    CERN, Geneva, Switzerland
  
  For a two-stage col­li­ma­tion sys­tem, the be­ta­tron phase ad­vance be­tween the pri­mary and sec­ondary stages is usu­ally set to max­imise the ab­sorp­tion of sec­ondary par­ti­cles outscat­tered from the pri­mary. An­other con­straint is the con­tri­bu­tion to the ring im­ped­ance of the col­li­ma­tion sys­tem, which can be de­creased through an op­ti­mized in­ser­tion op­tics, fea­tur­ing large val­ues of the beta func­tions. In this ar­ti­cle we re­port on first stud­ies of such an op­tics for the CERN LHC. In ad­di­tion to a gain in im­ped­ance, we show that the clean­ing ef­fi­ciency can be im­proved thanks to the large beta func­tions, even though the phase ad­vance is not set at the the­o­ret­i­cal op­ti­mum.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-MOPAB006  
About • paper received ※ 17 May 2021       paper accepted ※ 28 May 2021       issue date ※ 11 August 2021  
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WEPAB026 Optics Measurements and Correction Plans for the HL-LHC 2656
 
  • T.H.B. Persson, X. Buffat, F.S. Carlier, R. De Maria, J. Dilly, E. Fol, D. Gamba, H. Garcia Morales, A. García-Tabarés Valdivieso, M. Giovannozzi, M. Hofer, E.J. Høydalsvik, J. Keintzel, M. Le Garrec, E.H. Maclean, L. Malina, P.K. Skowroński, F. Soubelet, R. Tomás García, F.F. Van der Veken, A. Wegscheider, D.W. Wolf, L. van Riesen-Haupt
    CERN, Meyrin, Switzerland
  • J.M. Coello de Portugal
    PSI, Villigen PSI, Switzerland
  
  The High Lu­mi­nos­ity LHC (HL-LHC) will re­quire strin­gent op­tics cor­rec­tion to op­er­ate safely and de­liver the de­sign lu­mi­nos­ity to the ex­per­i­ments. In order to achieve this, sev­eral new meth­ods for op­tics cor­rec­tion have been de­vel­oped. In this ar­ti­cle, we out­line some of these meth­ods and we de­scribe the en­vi­sioned strat­egy of how to use them in order to reach the chal­leng­ing re­quire­ments of the HL-LHC physics pro­gram.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-WEPAB026  
About • paper received ※ 17 May 2021       paper accepted ※ 27 July 2021       issue date ※ 30 August 2021  
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WEPAB027 Optics Correction Strategy for Run 3 of the LHC 2660
 
  • T.H.B. Persson, R. De Maria, J. Dilly, E. Fol, H. Garcia Morales, M. Hofer, E.J. Høydalsvik, J. Keintzel, M. Le Garrec, E.H. Maclean, L. Malina, F. Soubelet, R. Tomás García, A. Wegscheider, D.W. Wolf, L. van Riesen-Haupt
    CERN, Meyrin, Switzerland
  • J.F. Cardona
    UNAL, Bogota D.C, Colombia
  
  The Run 3 of the LHC will con­tinue to pro­vide new chal­lenges for op­tics cor­rec­tions. In order to suc­ceed and go be­yond what was achieved pre­vi­ously, sev­eral new meth­ods to mea­sure and cor­rect the op­tics have been de­vel­oped. In this ar­ti­cle we de­scribe these meth­ods and out­line the plans for the op­tics com­mis­sion­ing in 2022.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-WEPAB027  
About • paper received ※ 17 May 2021       paper accepted ※ 12 July 2021       issue date ※ 11 August 2021  
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THPAB190 Optimising and Extending a Single-Particle Tracking Library for High Parallel Performance 4146
 
  • M. Schwinzerl, H. Bartosik, R. De Maria, G. Iadarola, K. Paraschou
    CERN, Geneva, Switzerland
  • A. Oeftiger
    GSI, Darmstadt, Germany
  • M. Schwinzerl
    KFUG/IMSC, Graz, Austria
  
  Six­Track­Lib is a li­brary for per­form­ing beam-dy­nam­ics sim­u­la­tions on highly par­al­lel com­put­ing de­vices such as shared mem­ory multi-core proces­sors or graph­i­cal pro­cess­ing units (GPUs). Its sin­gle-par­ti­cle ap­proach fits very well with par­al­lel im­ple­men­ta­tions with rea­son­able base­line per­for­mance, mak­ing such a li­brary an in­ter­est­ing build­ing block for var­i­ous use cases, in­clud­ing sim­u­la­tions cov­er­ing col­lec­tive ef­fects. We de­scribe op­ti­miza­tions to im­prove their per­for­mance on Six­Track­Lib’s main tar­get plat­forms and the as­so­ci­ated per­for­mance gains. Fi­nally, we out­line the im­ple­mented tech­ni­cal in­ter­faces and ex­ten­sions that allow Six­Track­Lib to be used in a wider range of ap­pli­ca­tions and stud­ies.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-THPAB190  
About • paper received ※ 18 May 2021       paper accepted ※ 14 July 2021       issue date ※ 16 August 2021  
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