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TY - CONF AU - Bogacz, S.A. ED - Schaa, Volker RW ED - Arduini, Gianluigi ED - Pranke, Juliana ED - Seidel, Mike ED - Lindroos, Mats TI - Design of Imaginary Transition Gamma Booster Synchrotron for the Jefferson Lab EIC (JLEIC) J2 - Proc. of IPAC2017, Copenhagen, Denmark, 14â19 May, 2017 C1 - Copenhagen, Denmark T2 - International Particle Accelerator Conference T3 - 8 LA - english AB - Baseline design of the JLEIC booster synchrotron is presented. Its aim is to inject and accumulate heavy ions and protons at 285 MeV, to accelerate them to about 7 GeV, and finally to extract them into the ion collider ring. The Figure-8 ring features two 260 deg. achromatic arcs configured with negative momentum compaction lattices, designed to avoid transition crossing for all ion species during the course of acceleration. The arc optics is based on a lightly perturbed 90 deg. FODO, with missing dipoles every fourth half-cell, where the horizontal dispersion is driven partly negative for the inward bending arc leading to negative momentum compaction. The lattice also features a specialized high dispersion injection insert optimized to facilitate the transverse phase-space painting in both planes for multi-turn ion injection. Furthermore, the lattice has been optimized to mitigate magnet error sensitivity and to ease chromaticity correction with two families of sextupoles in each plane. The booster ring is configured with super-ferric, 3 Tesla bends. We are presently launching optimization of the booster synchrotron design to operate in the extreme space-charge dominated regime. PB - JACoW CP - Geneva, Switzerland SP - 3350 EP - 3352 KW - injection KW - optics KW - ion KW - booster KW - lattice DA - 2017/05 PY - 2017 SN - 978-3-95450-182-3 DO - 10.18429/JACoW-IPAC2017-WEPVA040 UR - http://jacow.org/ipac2017/papers/wepva040.pdf ER -