LCLS LLRF Upgrades to the SLAC Linac Akre, R. ; Dowell, D. ; Emma, P. ; Frisch, J. ; Hong, B. ; Kotturi, K. ; Krejcik, P. ; Wu, J. ; Byrd, J. Abstract Publication: 22nd Particle Accelerator Conference (PAC 07) Pub Date: 2007 Bibcode: 2007pac..conf.2421A