<3> pieces. Mesures are of the largest one. Multi-wire detectors contain layers of positively and negatively charged wires enclosed in a chamber full of gas. A charged particle passing through the chamber knocks negatively charged electrons out of atoms in the gas, leaving behind positive ions. The electrons are pulled towards the positively charged wires. They collide with other atoms on the way, producing an avalanche of electrons and ions. The movement of these electrons and ions induces an electric pulse in the wires which is collected by fast electronics. The size of the pulse is proportional to the energy loss of the original particle.
The discovery of the Higgs boson by the ATLAS and CMS experiments was announced in CERN’s main auditorium in July 2012. Here, finally, was the missing piece in the standard model describing our universe. For some, it was the culmination of over 40 years’ work. This champagne bottle was drunk by members of CERN’s Theoretical physics group on the occasion.
Homegrown networking technology pre-dating the internet. This is a CERNnet card developed and built at CERN. There was a lot of space on the card between the components, so the engineers decided to put their portraits on it.
This card, based on a "4 slot DEC module", arbitrated the access priority of 15 datalinks of a CERNET node. Each datalinks could transfer data full duplex at 2.5 Mbit/sec over 1 Km of twisted pair (POD) cable. This was the frontier technology in 1980. The modest amount of integrated circuits was compensated by printing on the board photographs of the hardware designers, whose Belgian, Dutch and French nationality was underlined by the the short poem.
Records relating to civil engineering and site infrastructure activities for the CERN Neutrinos to Gran Sasso (CNGS) project. The series includes project management files, technical reports, construction and installation documentation, correspondence, contracts, and records concerning underground works, surface facilities, and infrastructure support associated with the CNGS beam and related installations.
Site and Civil Engineering Department (SCE)