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TY - CONF AU - Lebedev, V.A. AU - Valishev, A. ED - Eshraqi, Mohammad ED - Trahern, Garry ED - Schaa, Volker RW TI - Suppression of Half-Integer Resonance in Fermilab Booster 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 particle losses at injection in the FNAL Booster are one of the major factors limiting the machine performance. The losses are caused by motion non-linearity due to direct space charge and due to non-linearity introduced by large values of chromaticity sextupoles required to suppress transverse instabilities. The report aims to address the former - the suppression of incoherent space charge effects by reducing deviations from the perfect periodicity of linear optics functions. It should be achieved by high accuracy optics measurements with subsequent optics correction and by removing known sources of optics perturbations. The study shows significant impact of optics correction on the half-integer stop band with subsequent reduction of particle loss. We use realistic Booster lattice model to understand the present limitations, and investigate the possible improvements which would allow high intensity operation with PIP-II parameters. PB - JACoW CP - Geneva, Switzerland SP - 164 EP - 169 KW - lattice KW - space-charge KW - booster KW - resonance KW - optics DA - 2016/08 PY - 2016 SN - 978-3-95450-185-4 DO - 10.18429/JACoW-HB2016-MOPR034 UR - http://jacow.org/hb2016/papers/mopr034.pdf ER -