Generation of short Proton bunches in the CERN Accelerator Complex

Short high-energy proton bunches have been proposed as efficient drivers for single-stage electron-beam plasma accelerators. We discuss some very preliminary ideas if and how the desired proton bunches could be obtained in the CERN accelerator complex, considering various bunchshortening schemes, such as a fast non-adiabatic lattice change prior to extraction from a storage ring or the use of transversely deflecting cavities, as well as the possibility of introducing, in a longer bunch, a microstructure that might resonantly excite a plasma wake field.