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TY - CONF AU - Persson, T. AU - Levinsen, Y.I. AU - Maclean, E.H. AU - Tomás, R. ED - Henderson, Stuart ED - Akers, Evelyn ED - Satogata, Todd ED - Schaa, Volker R.W. TI - Non-linear Coupling Studies in the LHC J2 - Proc. of IPAC2015, Richmond, VA, USA, May 3-8, 2015 C1 - Richmond, VA, USA T2 - International Particle Accelerator Conference T3 - 6 LA - english AB - The amplitude detuning has been observed to decrease significantly as the horizontal and vertical tunes are approaching each other. This effect is potentially harmful since it might cause a loss of Landau damping, hence giving rise to instabilities. The measured tune split (Qx-Qy) versus amplitude is several times bigger than what can be explained with linear coupling. In this paper we present studies performed to identify the dominant sources of the non-linear coupling observed in the LHC. PB - JACoW CP - Geneva, Switzerland SP - 2105 EP - 2107 KW - coupling KW - octupole KW - hadron KW - collider KW - simulation DA - 2015/06 PY - 2015 SN - 978-3-95450-168-7 DO - 10.18429/JACoW-IPAC2015-TUPTY042 UR - http://jacow.org/ipac2015/papers/tupty042.pdf ER -