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The Alternating Gradient Synchrotron at
Brookhaven National Laboratory, Upton, Long
Island, N. Y. The half-mile circular tunnel
housing the magnet ring is shielded with an
earthen dike. This, the world's most powerful
particle accelerator, is used in high energy
physics research to probe the atomic nucleus.
Ektachrome by Brookhaven National Laboratory
Chester Litho, Inc., Chester, New York
C-16583
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