FERMILAB / SCIENCE PHOTO LIBRARY FERMILAB / SCIENCE PHOTO LIBRARY
The Meson Experiment area at the Fermi National Accelerator Laboratory (Fermilab) outside Chicago, Illinois. Protons accelerated in Fermilab's giant Tevatron accelerator are deflected from their orbital paths into a switchyard, where a number of separate beams are produced to serve three experimental areas. The beam for the Meson area comes down a tunnel under the raised bank leading to the red- roofed building. The protons smash into a target to produce secondary beams of mesons: pions & kaons. These particles are studied in 12 or more experiments housed in the main experiment building & the metal tunnels extending from it.
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