The BTL (Barrel Timing Layer) project is an additional layer that will be added to CMS for the high luminosity phase of the LHC. BTL is half of the MTD project (Minimum Ionizing Particle Timing Detector) which will allow for higher-resolution event reconstruction.
Currently, the following prototypes have been manufactured at ldeaSquare:
Installed inside the shielding of two of the largest experiments at the Large Hadron Collider, ATLAS and CMS there are special collimators known as the Target Absorbers (TAS).
This equipment needs to be adjusted manually each time the detector opens. In addition to this, the TAS has been modified over the years, meaning that the alignment procedure does not match the procedure that was originally envisaged.