CERN visit
For an overview of the whole thing, I recommend listening to Kurt Anderson’s excellent Studio 360 podcast which this week happened to discuss CERN:
Here’s what I can explain: the basic layout of the accelerator is a very large underground ring. There are actually a series of rings, in which the particles are loaded and then transferred until they finally get to the larger outer ring. At various points along these rings are a series of experiments designed to collect different types of data. The experiment we visited was CMS which is actually over the border in France. (Here’s a diagram from Wikipedia:)
At this site, protons will be smashed into each to try and find new subatoms. Each type of particle has a certain properties that give it a certain trajectory when collided. These trajectories are picked up by the data collectors and can then be used to determine what types of particles were produced. If previously unknown trajectories are detected, these may represent the “Higgs boson,” a hypothetical undiscovered subatomic particle. It’s all very dense, but if you are interested in learning more, check out the Wikipedia page about the CMS site which gives almost as good an overview as Erkki. (But not quite.)
Anyway, I didn’t know what to expect the accelerator to look like, but I certainly had something in mind like a sterile white lab. Instead, it was a massive mutli-colored mechanical construction that was more on the scale of space exploration. Very impressive. Here are the photos:
The throughly impressive data collection station at CMS
The even more impressive heating and cooling controls
Me in front of the accelerator
Once the experiment goes live, this fun retinal scanner will make sure only official people can get in. Side note: I didn’t know real retinal scanners already existed.
The whole thing is about 100 meters underground. It doesn’t seem like it when you’re down there, but we climbed the stairs back up, and I assure you it’s deep. Here’s my proof (creepy yellow lighting an added bonus).