Britannica AI Icon

radio-frequency accelerating cavity

device

Quick Summary

A radio-frequency accelerating cavity is a crucial component in particle accelerators. It uses oscillating electric fields, typically in the radio wave or microwave frequency range, to accelerate charged particles like electrons and protons. These cavities are designed to create standing or traveling electromagnetic waves that provide repeated "pushes" to the particles as they pass through.1

In linear accelerators, these cavities are often arranged in sequence, with drift tubes used to shield particles from decelerating fields and ensure they are accelerated at the right moment. For protons, which accelerate more slowly, lower frequencies and specific designs like the Alvarez tank or side-coupled-cavity structure are employed. Klystrons are electron tubes that can generate the high-power radio-frequency needed for these cavities.23

Summary created from Britannica articles using AI. AI can make mistakes, so verify using Britannica articles.

Ask Britannica AI about this topic

Britannica doesn't have a full article on this topic, so we've curated a list of our relevant coverage.