CMS now has a new layer of detectors: 144 gas electron multiplier (GEM) chambers have been installed to detect the muons produced in the very forward region of CMS
The ATLAS Inner Detector can measure the position of charged particles that pass through it to better than a 100th of a millimetre! To reach that precision, the detector must be aligned to equal or better accuracy
A 3D-printed “super-cube” scintillator would be the first occurrence of additive manufacturing being used in particle detectors and would allow more precise data collection