Calaga, R Jensen, E Nassiri, A Nicol, T Parma, V Peterson, T Rowe, A Belomestnykh, S LHC Crab Cavity 2013 2013 The first crab cavity engineering meeting for the LHC luminosity upgrade project (HL-LHC) was held from 13 to 14 December 2012 at Fermilad, Batavia, IL. The workshop was organized by a joint collaboration of CERN, HiLumi and US-LARP. The executive summary states the key conclusions from meeting and lists the required action items for the R&D, testing and final implementation of the crab scheme.