Word: positron
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Dates: during 1960-1969
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...engineers and technicians--working under Karl Strauch, professor of Physics, and James K. Walker, assistant professor of Physics--who have been studying the influence of electrical charges on one another at exceedingly small distances. To do so, the scientists have used the beam from the accelerator to produce electron-positron pairs...
...designs were attempts to produce the raw materials of the study -- the photographed tracks of thousands of collisions between two moving particles, an electron and an positron. Normal accelerator experiments send one particle into a stationary target...
...result was a proposal last summer for a $650,000 "positron injector" which would send a stream of positrons into the accelerator in the opposite direction. The two streams could be made to collide at a given point...
...higher energy would come from the collision of two moving subnuclear particles--an electron and a positron. Normal accelerator experiments send a particle into a stationary target. But these cohisions, Pipkin said, can only take place in a "ring" where both particles are stored--which could cost as much as $16 million to build. The CEA instead would make a giant storage ring out of its accelerator by adding an injector for positrons to the present one for electrons. The two particles would rotate in opposite directions. At a given point the two streams could be made to collide...