The Large Hadron Collider (LHC) constantly needs to be maintained and kept in pristine shape to discover new particles, so it has two inspectors to look after everything. These two are affectionately called TIM short for “Train Inspection Monorail”.
Autonomous mini robot monorails
These autonomous mini robot monorails that maintain the large hadron collider move around on a predetermined route using rails which are suspended from the ceiling. According to CERN’s post introducing the machines, the tracks are remnants from the time the tunnel housed the Large Electron Positron instead of the LHC. The monorails before were bigger and comparatively low-tech, those LEP were mostly used to transport personnel’s and materials.
These don’t only move around the rails they are also capable of doing quite a few things. They can monitor a lot of operations of the tunnel in real time like the tunnel’s structure, oxygen percentage, temperature and communication bandwidth. They can also snap visual or infrared images and even put wagons behind them autonomously.
You can see them in action on the video but they are not much to look at. They look boxy and silver in appearance. Without these robot maintaining the 17-mile tunnel would be very hard.