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TY - CONF AU - Jones, S. AU - Newton, D. AU - Wolski, A. ED - Petit-Jean-Genaz, Christine ED - Arduini, Gianluigi ED - Michel, Peter ED - Schaa, Volker RW TI - Initial Estimate of Fringe Field Effects in HL-LHC using Frequency Map Analysis J2 - Proc. of IPAC2014, Dresden, Germany, June 15-20, 2014 C1 - Dresden, Germany T2 - International Particle Accelerator Conference T3 - 5 LA - english AB - The planned High Luminosity upgrade to the LHC will require stronger focusing of the beam in the interaction regions. To achieve this, the inner triplet quadrupoles will be replaced with new magnets having larger gradient and aperture. In this new focusing regime the quadrupole fringe fields are expected to have a greater effect on the beam dynamics, due to their large aperture, as compared to the nominal LHC. In this preliminary study, simplified models are used in a tracking code to assess the impact of the fringe fields on the dynamics using frequency map analysis. PB - JACoW CP - Geneva, Switzerland SP - 1067 EP - 1070 KW - quadrupole KW - lattice KW - multipole KW - luminosity KW - closed-orbit DA - 2014/07 PY - 2014 SN - 978-3-95450-132-8 DO - 10.18429/JACoW-IPAC2014-TUPRO025 UR - http://jacow.org/ipac2014/papers/tupro025.pdf ER -