Abstract
We propose a dielectric-based, multistaged, laser-driven electron linear accelerometer microstructure operating in a vacuum that is capable of accelerating electrons to 1 TeV in one kilometer. Our study shows that a GeV/m gradient is achievable using two 100 fsec focused crossed-laser-beams, repeated every 300 μm, operated at a peak power of 0.2 GW and an energy density of less than 2J/cm 2 on the accelerator structure.