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The Neutron Express
Elle Starkman, Sly Vinson, Doug Darrow, Lane Roquemore
PPPL - National Spherical Torus Experiment (NSTX)
A ride around toy train tracks inside a fusion experimental machine can reveal much about a hot gas called plasma. PPPL research staff recently mounted a neutron source on a toy train inside the National Spherical Torus Experiment (NSTX), placed it on hobby train tracks that had been installed and sent it on a three-day continuous zip around the rails. The purpose: to calibrate the neutron rate during fusion experiments.