The length of a linear accelerator and the size of the d-shaped electrodes in a cyclotron severely limit the kinetic energy that particles can attain in these devices. these limitations can be overcome by using one of these?

• Correct Answer: synchrotron
• magnet
• plastic
• metal

Explanation: To achieve the same outcome in less space, a particle accelerator called a cyclotronforces the charged particles to travel in a circular path rather than a linear one. The particles are injected into the center of a ring and accelerated by rapidly alternating the polarity of two large D-shaped electrodes above and below the ring, which accelerates the particles outward along a spiral path toward the target. The length of a linear accelerator and the size of the D-shaped electrodes in a cyclotron severely limit the kinetic energy that particles can attain in these devices. These limitations can be overcome by using a synchrotron, a hybrid of the two designs. A synchrotron contains an evacuated tube similar to that of a linear accelerator, but the tube is circular and can be more than a mile in diameter (Figure 20.10 "A Synchrotron"). Charged particles are accelerated around the circle by a series of magnets whose polarities rapidly alternate.

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