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19 Dec 2013 | Benjamin Lutz | Detector
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. So far, the HO has been...
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19 Dec 2013 | Stefano Colafranceschi | Detector
A fourth station –– called RE4 –– will be added to the CMS endcap muon system during the ongoing LHC Long Shutdown (LS1). The CMS muon system consists of three different sub-detectors: RPCs (Resistive Plate Chambers), DT (Drift Tubes) and CSC (...
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03 Dec 2013 | Achintya Rao | Physics
At a seminar held at CERN this morning, the CMS collaboration presented several measurements of the properties of the Higgs boson discovered in July 2012. CMS showed for the first time strong evidence for the decay of Higgs bosons into fermions,...
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30 Nov 2013 | Marzena Lapka | Article
Dear friends, welcome to the first edition of the new CMS monthly newsletter. We would like to thank all collaborators who contributed to the CMS Times, published between 2006 – 2012. It served well in providing information during the construction...
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29 Nov 2013 | Antje Behrens | Detector
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 weeks ago, the surveyors were busy...
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29 Nov 2013 | Maria Isabel Pedraza Morales | Detector
Two new wheels of the Resistive Plate Chambers (RPCs) of the muon system are being installed during the LHC’s first Long Shutdown (LS1). These will add to the six lateral wheels in the (outer) endcaps, which currently make up the RPC system with six...
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27 Nov 2013 | Tom Dodington | Detector
From the CMS experimental site at Cessy, France, located at Point 5 on the LHC ring ————— 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). On 21...
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26 Nov 2013 | David Anthony Petyt | Collaboration
The CMS Electromagnetic Calorimeter (ECAL) is responsible for measuring electrons and photons produced in collisions inside the detector. It comprises of 75,848 lead-tungstate crystals, each with its own photodetector and electronics to form readout...
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18 Nov 2013 | Jesus Puerta Pelayo | Engage with CMS
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. But this time it wasn't to work on the maintenance of the Drift Tubes system as in previous weeks...
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15 Nov 2013 | Achintya Rao | Engage with CMS
LHC data are exotic, they are complicated and they are big. At peak performance, about one billion proton collisions take place every second inside the CMS detector at the LHC. CMS has collected around 64 petabytes (or over 64,000 terabytes) of...
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22 Oct 2013 | Anonymous | Collaboration
On 8 October, the 2013 Nobel Prize in physics was awarded to Professors Francois Englert and Peter Higgs “for the theoretical discovery of a mechanism that contributes to our understanding of the origin of mass of subatomic particles, and which...
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16 Oct 2013 | Alexey Finkel | Collaboration
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. This particular detour had brought us to the delightful...
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