The production of the new CMS tracker modules started in Brussels. These modules will replace the present CMS tracker for the high-luminosity phase of the particle collider LHC at CERN, foreseen to take data for 15 years starting in 2030.
A pipeline of 7 modules, with a new module started every day, has been completed successfully. Each module comprises 2 silicon sensors with 2032 strips each, precisely aligned, and read out by microelectronics chips.
On the picture, an IIHE technician is checking the alignment of the electronics circuits (golden pads on the left of the microscope image) with the strips of the top-side sensor (dark lines on the right of the image).