PPT-Two beam instabilities in low

emittance rings Lotta Mether GRumolo GIadarola HBartosik Low Emittance Rings Workshop INFNLNF Frascati September 17 th 2014 Two beam instabilities Collective effects . The algorithm uses orthogonal rank2 laminates as design ariables whic need to regularized as the asso ciated Ho ok es la ws are degenerate When the displacemen ts are appro ximated or 1bubble elemen ts the discrete op erator is linearized and its ei O. . Tarvainen, T. Kalvas, H. Koivisto, J. . Komppula. , R. Kronholm, J. . Laulainen . University. . of . Jyväskylä. . I. . Izotov. , D. . Mansfeld. , V. . . Skalyga. . Institute . of. Applied . H. . Damerau, . G. Sterbini. MSWG MEETING, June 19. th. 2015. Acknowledgements:. . S. . Gilardoni, M. Haase. ,. . M. . Migliorati, M. . Paoluzzi, D. Perrelet.. 1. Coupled-bunch longitudinal instability and damper in the PS. GARRY KWAN YUAN. 23 AUGUST 2017. MSC THESIS PRESENTATION. 1. 01) WHAT ITS ALL ABOUT (some background knowledge). 02) THE GAME PLAN . 03) THE RESULTS (and some of the nitty-gritty). 04) WHAT DOES IT ALL MEAN. Prevalence, App . (non)Resilience. , and OS Remedy. ZeQi. . Lai, Yong Cui, . Yimin. Jiang. , . Xiaomeng. . Chen, . Y. Charlie Hu, Kun Tan, . Minglong. Dai, Kai Zheng. Wireless. . n. etwork. . i. and. Fermi acceleration . at ultra-relativistic shock waves. Martin Lemoine. Institut d’Astrophysique de Paris. CNRS, Université Pierre & Marie Curie. M. Lemoine, G. Pelletier, B. Revenu, 2006, ApJ . : . expectations. , observations and outlook . Humberto Maury Cuna*, Elena Benedetto, Giovanni Rumolo,. . Frank Zimmermann, et al. BCWG, 9 November 2010. * CINVESTAV, Mexico. o. utline. electron-cloud effects. Karl Bane. FLS2012 Workshop. 7 March 2012. Longitudinal microwave instability. --Coherent synchrotron radiation (CSR). --Impedance scaling for small angle transitions. --Impedance budget. Rob Williamson. Supervisors: Chris Warsop (ISIS), Ivan . Konoplev. (JAI). Contents. Introduction. ISIS Synchrotron. Loss Mechanisms at ISIS. Head-tail R&D. Damping Systems. Summary and Plans. Introduction. X. . Buffat. , L.R. Carver. Overview. No apparent correlation on unstable bunches with emittance or beam intensity.. No correlation of timing of instabilities with . LHCb. polarity.. New work: further study into . Finemet Review. September 14. th. - 15. th. 2015. Acknowledgements:. . S. Gilardoni, M. Haase, M. Migliorati, M. Paoluzzi, D. Perrelet.. Simulation studies and . measurements . for the . PS . coupled-bunch feedback. G. Iadarola, L. . Mether. , E. . Métral. , L. Sabato. Introduction. Instability dependence on the bunch intensity. Dipole magnets. Quadrupole magnets. Experimental observations with trains of 12b. Effect of the transverse emittance. Beam instability theory and modeling. Contents:. Introduction. Longitudinal instabilities (1D): Microbunching and multi-stream instabilities. . Transverse instabilities (2D): Resistive wall instability and Landau damping. Beam dynamics meets diagnostics . Firenze, 6 November . 2015. R. Bartolini. Diamond Light Source. and . John Adams Institute, University of Oxford. thanks: . R. Fielder, S. Pande, G. Rehm, . V. Smalyuk (BNL.