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TY - CONF AU - Batygin, Y.K. AU - Fronk, T.T. ED - Schaa, Volker RW ED - Power, Maria ED - Shiltsev, Vladimir ED - White, Marion TI - Dynamics of Intense Beam in Quadrupole-Duodecapole Lattice Near Sixth Order Resonance J2 - Proc. of NAPAC2016, Chicago, IL, USA, October 9-14, 2016 C1 - Chicago, IL, USA T2 - North American Particle Accelerator Conference T3 - 3 LA - english AB - The presence of duodecapole components in quadrupole focusing field results in excitation of sixth-order single-particle resonance if the phase advance of the particles transverse oscillation is close to 60 deg. This phenomenon results in intensification of beam losses. We present analytical and numerical treatment of particle dynamics in the vicinity of sixth-order resonance. The topology of resonance in phase space is analyzed. Beam emittance growth due to crossing of resonance islands is determined. Halo formation of intense beams in presence of resonance conditions is examined. PB - JACoW CP - Geneva, Switzerland SP - 552 EP - 554 KW - ion KW - resonance KW - quadrupole KW - focusing KW - lattice DA - 2017/01 PY - 2017 SN - 978-3-95450-180-9 DO - 10.18429/JACoW-NAPAC2016-TUPOB26 UR - https://jacow.org/napac2016/papers/tupob26.pdf ER -