Part of the CMS collaboration’s commitment to the ongoing experiments at the LHC is to participate in the detector shifts which occur 24 hours a day, seven days a week. Many researchers spend time in the CMS Control Room located in Cessy, France,…

Recommendations for luminosity estimations for HCP are available on the main LUM POG page.

CMS has published its first paper on proton-lead (pPb) collisions, describing the observation of a phenomenon that was previously seen first in nucleus-nucleus collisions but also detected by CMS in proton-proton (pp) collisions. The effect is a…

All of the atoms in our bodies are made of electrons, protons and neutrons, and the protons and neutrons can be further broken down into quarks. Fundamentally, then, we are made of only two types of particles: electrons and quarks. But what do these…

Visitors to P5 now have a series of seven posters of beautiful 3D drawings of the CMS detector to look at before they go underground to the CMS cavern. This series of the drawings is called “ZOOOM”. Image credit: Tai Sakuma | Animation credit:…

By Siddharth Sehgal For two weeks this summer, as an intern at CERN, I had a wonderful exposure to the exciting and challenging world of particle physics under the supervision of Archana Sharma, a senior particle physicist at CERN. I had the…

Our best understanding of the early Universe tells us that a dense medium, known as the quark-gluon plasma (QGP), existed in the first microseconds after the big bang. These early-Universe conditions can be mimicked in particle colliders by smashing…

Guido Tonelli, CMS Spokesperson 2010–2011, was made 'Commendatore' of the Order of Merit of the Italian Republlic (Commendatore Ordine al Merito della Repubblica Italiana) by Giorgio Napolitano, the President of the Italian Republic, for…

The CMS Letter of Intent was completed 20 years ago this month. We propose to build a general purpose detector designed to run at the highest luminosity at the LHC. The CMS (Compact Muon Solenoid) detector has been optimized for the search of the…

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The LHC circulates protons inside its beam-pipes not in a continuous stream but in several very closely packed bunches. In order to maximise the probability of the tiny protons colliding with one another, the LHC tries to pack as many protons as it…

The magnet worked properly until it suffered two unexpected stops in August due to technical problems on the service infrastructure. During the June Technical Stop, the CMS magnet was ramped down to zero tesla in order to allow a preventive…