Radiotherapy! What’s it all about?
Linear Accelerator
A medical linear accelerator (LINAC) customizes high energy x-rays or electrons to conform to a tumor's shape and destroy cancer cells while sparing surrounding normal tissue. It features several built-in safety measures to ensure that it will deliver the dose as prescribed and is routinely checked by a medical physicist to ensure it is working properly. Courtesy of https://www.radiologyinfo.org/
Inside a linac bunker