Not Available HI?S collaboration: V.N. Litvinenko (co-spokesperson), M. Busch, K. Chalut, M. Emamian, S. Hartman, S. Kovacs, J. Li, E. Longhi, S.F. Mikhailov, I.V. Pinayev, V.G. Popov, S. Roychowdhury, G. Swift, P. Wallace, P. Wang, Y. Wu (Duke University, FEL Lab, Durham, NC), H.R. Weller (co-spokesperson), M.W. Ahmed, M. Blackstone, A. Champange, S. Churchwell, T. Clegg, H. Gao, D.G. Haase, C. ...