ELI5: Explain Like I'm 5

Advanced Photon Source

An Advanced Photon Source is a type of machine that uses X-rays to produce pictures that help people see inside things that are too small to see with the naked eye. X-rays are a type of light, like the light that comes from the sun or a lightbulb, but they are special because they can pass through some things, like your body, which lets doctors take pictures inside you to see if anything is wrong! Advanced Photon Sources make these X-rays very powerful so they can see smaller things, like the very tiny parts of cells in your body.