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TY - CONF AU - Blednykh, A. AU - Bacha, B. AU - Bassi, G. AU - Chen-Wiegart, Y. AU - Cheng, W.X. AU - Chubar, O.V. AU - Smaluk, V.V. ED - Schaa, Volker RW ED - Power, Maria ED - Shiltsev, Vladimir ED - White, Marion TI - Microwave Instability Studies in NSLS-II J2 - Proc. of NAPAC2016, Chicago, IL, USA, October 9-14, 2016 C1 - Chicago, IL, USA T2 - North American Particle Accelerator Conference T3 - 3 LA - english AB - The microwave instability in the NSLS-II has been studied for the current configuration of insertion devices, 9 In-Vacuum Undulators (IVU's), 3EPU's, 3 Damping Wigglers. The energy spread as a function of single bunch current has been measured based on the frequency spectrum of IVU for X-Ray Spectroscopy (SRX) beam line. The results for two lattices, bare lattice with nominal energy spread 0.0005 and a lattice with one DW magnet gap closed (nominal energy spread 0.0007) are compared. In addition we used a Spectrum Analyzer to measure the beam spectrum. The instability thresholds for two different lattices cross-checked numerically using the particle tracking code SPACE and longitudinal impedance. PB - JACoW CP - Geneva, Switzerland SP - 655 EP - 658 KW - ion KW - lattice KW - simulation KW - wiggler KW - electron DA - 2017/01 PY - 2017 SN - 978-3-95450-180-9 DO - 10.18429/JACoW-NAPAC2016-WEA1CO05 UR - https://jacow.org/napac2016/papers/wea1co05.pdf ER -