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We consider a possibilty to use an echelon of mutually coherent laser pulsesgenerated by the emerging CAN (Coherent Amplification Network) technology fordirect particle acceleration in periodic plasma structures. The plasmastructure survives a single shot only. However, due to it's simplicity andprojected very low production costs, the structure can be replaced for everylaser shot at a kiloherz repetition rate. We discuss resonant and freestreaming configurations. The resonant plasma structures can trap energy oflonger laser pulses but are limited to moderate laser intensities of about10^{14}\,{\rm W/cm^{2}} and are very sensitive to the structure quality. Thefree streaming configurations can survive laser intensities above 10^{18}\,{\rmW/cm^{2}} for several tens of femtoseconds so that sustained accelerating rateswell above {\rm TeV/m} are feasible. In our full electromagnetic relativisticparticle-in-cell (PIC) simulations we show a test electron bunch gaining up to120\,{\rm GeV} over a distance of 5.3\,{\rm cm} only.

Electron acceleration by coherent laser pulse echelons in periodic plasma structures