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TY - CONF AU - Appleby, R. AU - Garland, J.M. AU - Hock, K.M. AU - Johnstone, C. AU - Owen, H.L. AU - Tygier, S.C. ED - Petit-Jean-Genaz, Christine ED - Arduini, Gianluigi ED - Michel, Peter ED - Schaa, Volker RW TI - Simulation of Dynamics in Ultra-compact Isochronous Medium Energy Racetrack FFAGs J2 - Proc. of IPAC2014, Dresden, Germany, June 15-20, 2014 C1 - Dresden, Germany T2 - International Particle Accelerator Conference T3 - 5 LA - english AB - The FFAG (Fixed-Field Alternating-gradient) accelerator is a class of accelerators that comprises the best features of the cyclotron and the synchrotron, combining fixed magnetic fields with strong focusing gradients for optimal stable, low-loss operation. Here, a new type of medium-energy 1-GeV isochronous (CW) FFAG has been developed in a racetrack layout that supports two opposing synchrotron-like straights, permitting both high-gradient RF modules and efficient injection and extraction in a highly compact footprint. In this paper we present beam dynamic simulations for this compact racetrack FFAG, and compare the differences between an equivalent circular and a racetrack configuration. A comparison of the FFAG dynamics with the 800-MeV (Daeδalus) cyclotron is briefly presented. PB - JACoW CP - Geneva, Switzerland SP - 780 EP - 783 KW - cyclotron KW - focusing KW - dynamic-aperture KW - acceleration KW - lattice DA - 2014/07 PY - 2014 SN - 978-3-95450-132-8 DO - 10.18429/JACoW-IPAC2014-MOPRI076 UR - http://jacow.org/ipac2014/papers/mopri076.pdf ER -