Credit: Marilyn Sargent/Lawrence Berkeley National Laboratory
Sam Barber, left, a research scientist at Berkeley Lab’s BELLA Center, and Jeroen van Tilborg, a staff scientist at the BELLA Center, hold the active plasma lens, right, and dipole magnets used in an electron-beam diagnostic experiment. The setup enabled measurements of electron-beam energy, with range and resolution comparable to what is achieved using the multi-ton magnet located behind them.