CERN Accelerating science

CMS

Mapping the CMS inner tracking system with unprecedented precision

In an experiment like CMS, it is important to know where all the detector material is. For example, in order to properly simulate the detector response, you need to know not only where the sensors are, but also the locations of the inactive material…

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A new era for calorimetry?

Motivation In the mid-1990s the design of the CMS detector was being finalized, culminating in the relevant Technical Design Reports at the end of the decade. This was followed by the start of construction. The main constraints at the time were…

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New paradigms for the CMS Phase-2 Upgrades

The CMS Phase-2 Upgrade projects will replace or improve detector systems to provide the necessary physics performance under the challenging conditions of high luminosity at the HL-LHC. Installation of the upgraded detector systems starts in LS2 and…

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CMS pixel upgrade: a truly global endeavor

A new and upgraded pixel detector has just been installed in the heart of CMS in this extended year end technical stop (EYETS 2016-17), marking the end of a five year long construction project. The CMS pixel detector that was replaced was performing…

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ATLAS and CMS physicists awarded 2017 Panofsky Prize

On Tuesday, 11 October 2016, the American Physical Society (APS) announced the award of the 2017 W.K.H. Panofsky Prize in Experimental Particle Physics to Michel Della Negra (Imperial College London and, previously, CERN), Peter Jenni (Albert-…

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CMS releases new data

Rediscover the Standard Model of particle physics and much more with open data from the Large Hadron Collider Today, the CMS Collaboration at CERN has released more than 300 terabytes (TB) of high-quality open data. These include over 100 TB, or 2.5…

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CMS 2015 - taking data under difficult conditions

The last edition of this letter ended with the optimistic remark that CMS after the end of LS1 would be perfectly prepared for the exciting times ahead of us. And indeed the final steps of LS1 went smoothly with CMS ready for the first beams. In…

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CMS results in Hard Probes 2015

CMS has delivered a comprehensive set of differential RAA measurements, quantifying the jet quenching effect for hard probes of various flavors. Profound suppression of strongly interacting probes in 2.76 TeV PbPb collisions is established with high…

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The new CMS Timing and Control Distribution System

It is of paramount importance that all parts of an LHC experiment are synchronized to each other and to the passage of particles in the centre of the experiment. The original CMS Timing, Trigger, and Control (TTC) system made this possible during…

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Greg Rakness: CMS co-Run Coordinator

The CMS Run Coordination team is made up of three people: Christoph Schwick and myself as co-Run Coordinators and Silvia Goy Lopez as coordinator of the Detector Performance Groups. Together we manage the commissioning and operation of the CMS…

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