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TY - CONF AU - Iida, N. AU - Egawa, K. AU - Enomoto, Y. AU - Funakoshi, Y. AU - Kikuchi, M. AU - Mimashi, T. AU - Ohnishi, Y. AU - Oide, K. AU - Suetsugu, Y. ED - Schaa, Volker RW ED - Arduini, Gianluigi ED - Pranke, Juliana ED - Seidel, Mike ED - Lindroos, Mats TI - Optics Design and Observation for the Beam Abort System in SuperKEKB HER J2 - Proc. of IPAC2017, Copenhagen, Denmark, 14â19 May, 2017 C1 - Copenhagen, Denmark T2 - International Particle Accelerator Conference T3 - 8 LA - english AB - In the first commissioning of SuperKEKB, which is 'Phase 1', the new abort system is tested in the High Energy Ring (HER). There is a risk that aborted beams with low emittance and high current may destroy the window for extraction from beam pipe. In order to enlarge the aborted beam at the window, quadrupole field is applied only for the aborted beam. In the Low Energy Ring (LER), quadrupole pulsed magnets will be installed to enlarge the aborted beam, and in the HER, a pair of identical sextupole magnets is installed between the abort kickers and the extraction window. These sextrupole magnets are connected by I or 'I transformation to cancel the geometrical nonlinearity for the stored beam in the ring. This paper will report the optics design for the abort system of the HER as well as the observation of the aborted beam. PB - JACoW CP - Geneva, Switzerland SP - 2922 EP - 2924 KW - sextupole KW - optics KW - injection KW - kicker KW - quadrupole DA - 2017/05 PY - 2017 SN - 978-3-95450-182-3 DO - 10.18429/JACoW-IPAC2017-WEPIK007 UR - http://jacow.org/ipac2017/papers/wepik007.pdf ER -