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TY - CONF AU - Mether, L. AU - Iadarola, G. AU - Rumolo, G. ED - Eshraqi, Mohammad ED - Trahern, Garry ED - Schaa, Volker RW TI - Numerical Modeling of Fast Beam Ion Instabilities J2 - Proc. of HB2016, Malmö, Sweden, July 3-8, 2016 C1 - Malmö, Sweden T2 - ICFA Advanced Beam Dynamics Workshop on High-Intensity and High-Brightness Hadron Beams T3 - 57 LA - english AB - The fast beam ion instability may pose a risk to the operation of future electron accelerators with beams of high intensity and small emittances, including several structures of the proposed CLIC accelerator complex. Numerical models can be used to identify necessary vacuum specifications to suppress the instability, as well as requirements for a possible feedback system. Vacuum requirements imposed by the instability have previously been estimated for linear CLIC structures, using the strong-strong macroparticle simulation tool FASTION. Currently, efforts are being made to improve the simulation tools, and allow for equivalent studies of circular structures, such as the CLIC damping rings, on a multi-turn scale. In this contribution, we review the recent code developments, and present first simulation results. PB - JACoW CP - Geneva, Switzerland SP - 368 EP - 372 KW - ion KW - simulation KW - electron KW - damping KW - linac DA - 2016/08 PY - 2016 SN - 978-3-95450-185-4 DO - 10.18429/JACoW-HB2016-WEAM4X01 UR - http://jacow.org/hb2016/papers/weam4x01.pdf ER -