CMS Experiment, CERN

LHC delivers low-energy collisions to CMS

First proton-proton collisions after LS1

CMS is eager to see the first collisions of the LHC Run2. The recent news that the LHC restart may be delayed because of a hardware issue gives us extra time to prepare for those collisions.

Every year, the CMS Young Researcher’s Prize is awarded to CMS members who are less than around eight years into their careers after the completion of their PhD or an equivalent qualification.

“The scientific knowledge we produce is for everyone to share.”

Yes, that’s correct: photon collider.

14 June 2014, London, UK

A few of the results that CMS presented at this year’s Quark Matter conference were highlighted a couple of weeks ago in the CERN Courier article that was also posted on CMS news.

This article originally appeared in the CERN Courier on 22 May 2014.

The new top-quark mass measurement is the single most precise result as yet.

CMS has improved the constraints on the Higgs width, a fundamental property of this unique new particle, by more than two orders of magnitude.

At the time when the minds of a few physicists are occupied with the design of a new detector, and the first meetings take place around a coffee table with detector engineers, the subjects discussed the most are the intensity and homogeneity of the magnetic field, the hermetic nature of the calor

The Tracker is a subdetector that is located closest to the collision point of the LHC’s particle beams inside the CMS detector. It must face an onslaught of billions of particles flying through it each second of operation.

Building robots, using 3D printers and testing chemical reactions is an excellent way to spend your Saturday.

CMS has many different safety systems installed in the underground experimental area. These are designed to protect the detector and all the associated electronics as well as the cavern itself. In case of fire, the last line of defence is the High Expansion Foam System.

From the CMS experimental site at Cessy, France, located at Point 5 on the LHC ring

The first part of the CMS endcap calorimetry, as seen by particles coming from interactions in the centre of the detector, is the "ECAL Preshower" or "ES" for short.

Former Deputy Spokesperson became head of the CMS experiment this month as Joe Incandela’s term came to a close.

Building and operating the CMS Detector is a complicated endeavour! Now, more than 20 years after the detector was conceived, the CMS Bologna group proposes to follow the steps of this challenging project by playing "The Higgs Boson Goose Chase" game, illustrating CMS activities and goals.

The central hadron calorimeter (HCAL) of CMS consists of the barrel (HB), the endcap (HE), and the outer (HO) regions. The HO consists of one or two scintillator layers and uses the metal of the magnet system as an absorber.

A fourth station –– called RE4 –– will be added to the CMS endcap muon system during the ongoing LHC Long Shutdown (LS1).

Several measurements of properties of the Higgs unveiled at CERN seminar.

CERN’s surveyors conduct diverse measurements to ensure, for example, accurate positioning of magnets, detectors and other equipment. They do so using techniques such as laser tracking and 3D scanning.

Two new wheels of the Resistive Plate Chambers (RPCs) of the muon system are being installed during the LHC’s first Long Shutdown (LS1).

The past two weeks have seen several pivotal steps taken towards achieving some of the key goals for CMS during the LHC’s first Long Shutdown (LS1).

Repairs needed to be performed on a region consisting of 75 channels in the positive ECAL endcap, which had been inoperable since 2009.

Early in the morning on 22 October, I grabbed my laptop and safety helmet and took the elevator 30 storeys underground to the CMS experimental cavern.

CMS is taking its first steps in making up to half of its data accessible to the public, in accordance with its policy for data preservation, re-use and open access.

Special mention to ATLAS and CMS experiments for confirming existence of the BEH mechanism by discovering a Higgs boson

One otherwise unremarkable day, the meeting of the CMS group at the University of Minnesota Physics Department took an unexpected, yet not entirely uncommon, detour to the pages of the web.