Word: ring
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Dates: during 1960-1969
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...experiments will take place in huge underground experimental hall. The hall is 100 by 300 feet--the size of a football field--and is located at a tangent to the main accelerator ring. It is in this room that the electron pulses emerge to be directed at various targets...
Like everything else in the accelerator, the equipment in the experimental hall is designed for maximum flexibility. Lead-and-concrete shielding blocks weighing 35 tons each are moved from experiment to experiment by a giant overhead crane. It is expected that several beams will emerge simultaneously from the ring at different places, and thus as many as six experiments may be conducted at once...
...joke," one scientist commented. "Inside the ring, there is tremendous leakage of energy in the form of high-frequency radiation. A person caught in there when the machine is running would receive a fatal does in a small fraction of a second." Eight feet of concrete and lead are used to shield the experimental hall personnel from the ring's radiation...
...ever caught inside the heavily shielded circular tunnel when the accelerator is in operation. Before the machine is started up, a crew walks the length of the tunnel, checking to see that all personnel are out of the danger area, and locking the doors to the ring as they go. When they finish, a gong sounds at five second intervals. Later, red lights flash warning, and a still more insistent gong begins to sound. When the flashers and gong cease, anyone caught inside has one minute to hit any of a dozen crash buttons located inside the tunnel. Pushing...
...careful with explosives, or poisons. We have to be careful with radiation. It's not really very different," said one. Technicians at the accelerator need not wear dosage clips, but no job is without its peculiarities. At the C.E.A., nobody wears a wristwatch-the powerful magnets in the ring will quickly ruin a watch...