Zweibel, Ellen2016-08-302016-08-302016-08-23https://hdl.handle.net/11299/182002Cosmic ray propagation in galaxy clusters is important for understanding nonthermal emission (or its absence) from these systems, and for understanding the energetics of AGN and starforming galaxies. We discuss work in progress on the driving and damping of the cosmic ray streaming instability under the high beta conditions prevailing in cluster plasmas, and the implications for cosmic ray propagation and confinement.enICMFTPIPresentation