When speaking of secret places around Purdue, the conversation will invariably turn to the particle accelerator underneath the engineering mall. No one seems to know how to get there, and even fewer have ever seen it. I was one such person up until Tuesday evening when I went with my dorm floor's faculty fellow and a three other students to get a tour of the fabled facility.
It turns out that the rumors are mostly true; the acclerator is housed in a several thousand square foot "building" buried below MSEE and the eastern end of the engineering mall. The main room is about the size of a small gym with the trailer-sized, orange acclerator at the far end. Inside the orange tank, a gigantic creates a stream of particles energized to several tens of thousands of volts. From there, the particles travel down two pipes at opposite ends of the tanks to where the experiments take place.
We were lucky to visit that day. The acclerator was getting repaired, which gave us the opportunity to actually go inside and see the internal machinery. Instead of using a fabric belt to carry the charge like smaller Van de Graaff generators, the accelerator uses a pair of metal chains, each strung along opposite halves of the tank.
After Professor Elmore, my faculty fellow and the directory of the facility, explained how a lot of the internal machinery worked, we all exited the tank and followed the rear pipe into a second room. There, it appeared the particle beam split between three branches of pipes each terminating at some scary-looking electronics. In addition to the accelerator pipes, the room contained all sorts of spare parts, experimental equipment, tools, instruments, and other physics flotsam. It looked like a mad scientist's garage. We made our way through the room and finished the tour with a demonstration of a small Van de Graaff generator and a gigantic cement door so big that it could flatten pennies as it rolled shut.
I'd like to thank Professor Elmore for giving me and the rest of the floor the opportunity to see something most students have only heard of. Should I get the chance to go back while the accelerator is running, I will definitely take it. That, or I hear there's a nuclear reactor underneath the EE building...
