Author: Risselada, T.
Paper Title Page
MOPWO027 Improved TEAPOT Method and Tracking with Thick Quadrupoles for the LHC and its Upgrade 945
  • H. Burkhardt, R. De Maria, M. Giovannozzi, T. Risselada
    CERN, Geneva, Switzerland
  The comparison between tracking with thick and thin lens models for the LHC have been studied. A widely-used method to generate thin models is based on the TEAPOT slicing, which, in the original implementation is limited in the number of slices. In this paper an improved method is presented, which overcomes some of the limitations of the original TEAPOT. The performance is analysed and the impact on numerical simulation of the dynamic aperture is evaluated, both for the LHC and its upgrade, HL-LHC.  
TUPFI039 Optics Performance of the LHC During the 2012 Run 1433
  • P. Skowroński, T. Bach, M. Giovannozzi, A. Langner, Y.I. Levinsen, E.H. Maclean, T. Persson, S. Redaelli, T. Risselada, M. Solfaroli Camillocci, R. Tomás, G. Vanbavinckhove
    CERN, Geneva, Switzerland
  • M.J. McAteer
    The University of Texas at Austin, Austin, USA
  • R. Miyamoto
    ESS, Lund, Sweden
  • T. Persson
    Chalmers University of Technology, Chalmers Tekniska Högskola, Gothenburg, Sweden
  During 2012 the LHC was operating at 4TeV with beta star at ATLAS and CMS interaction points of 0.6m. During dedicated machine studies the nominal LHC optics was also setup with beta star of 0.4m. A huge effort was put into the optics commissioning leading to a record low peak beta-beating of around 7%. We describe the correction procedures and discuss the measurement results.