Long cardboard tube, such as an empty roll of wrapping paper, to make your ramp. It should be at least two-and-one-half feet long. A thin book or small wood block to raise one end of your ramp. It ...

BERKELEY, CA -- Researchers at the Department of Energy's Lawrence Berkeley National Laboratory have taken a giant step toward realizing the promise of laser wakefield acceleration, by guiding and ...

Bringing protons up to speed with strong laser pulses -- this still young concept promises many advantages over conventional accelerators. For instance, it seems possible to build much more compact ...