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TY - CONF AU - Morozov, V.S. AU - Cai, Y. AU - Derbenev, Y.S. AU - Lin, F. AU - Nosochkov, Y. AU - Pilat, F.C. AU - Sullivan, M.K. AU - Wang, M.-H. AU - Wei, G.H. AU - Zhang, Y. ED - Petit-Jean-Genaz, Christine ED - Kim, Dong Eon ED - Kim, Kyung Sook ED - Ko, In Soo ED - Schaa, Volker RW TI - Injection Optics for the JLEIC Ion Collider Ring J2 - Proc. of IPAC2016, Busan, Korea, May 8-13, 2016 C1 - Busan, Korea T2 - International Particle Accelerator Conference T3 - 7 LA - english AB - The Jefferson Lab Electron-Ion Collider (JLEIC) will accelerate protons and ions from 8 GeV to 100 GeV. A very low beta function at the Interaction Point (IP) is needed to achieve the required luminosity. One consequence of the low beta optics is that the beta function in the final focusing (FF) quadrupoles is extremely high. This leads to a large beam size in these magnets as well as strong sensitivity to errors which limits the dynamic aperture. These effects are stronger at injection energy where the beam size is maximum, and therefore very large aperture FF magnets are required to allow a large dynamic aperture. A standard solution is a relaxed injection optics with IP beta function large enough to provide a reasonable FF aperture. This also reduces the effects of FF errors resulting in a larger dynamic aperture at injection. We describe the ion ring injection optics design as well as a beta-squeeze transition from the injection to collision optics. PB - JACoW CP - Geneva, Switzerland SP - 2445 EP - 2447 KW - quadrupole KW - injection KW - optics KW - ion KW - collider DA - 2016/06 PY - 2016 SN - 978-3-95450-147-2 DO - 10.18429/JACoW-IPAC2016-WEPMW012 UR - http://jacow.org/ipac2016/papers/wepmw012.pdf ER -