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TY - CONF AU - Glukhov, S.A. AU - Levichev, E.B. ED - Kuzin, Maxim ED - Schaa, Volker RW TI - Dynamic Aperture Optimization of the NICA Collider J2 - Proc. of RuPAC2016, St. Petersburg, Russia, November 21-25, 2016 C1 - St. Petersburg, Russia T2 - Russian Particle Accelerator Conference T3 - 25 LA - english AB - NICA is a proton and heavy ion collider being built at JINR in Dubna, Russia. It was shown that nonlinear quadrupole fringe fields are among the main factors limiting dynamic aperture of the machine. In the present paper the following ways of dynamic aperture optimization were studied: betatron tunes optimization and placing octupole lenses to the lattice to compensate fringe fields' effect. PB - JACoW CP - Geneva, Switzerland SP - 169 EP - 172 KW - octupole KW - quadrupole KW - lattice KW - dynamic-aperture KW - resonance DA - 2017/02 PY - 2017 SN - 978-3-95450-181-6 DO - 10.18429/JACoW-RuPAC2016-FRCAMH08 UR - http://jacow.org/rupac2016/papers/frcamh08.pdf ER -