CMS
LHC experiments back in business at record energy
The Large Hadron Collider (LHC) started delivering physics data on 3rd of June for the first time in 27 months. After an almost two year shutdown and several months re-commissioning, the LHC is now providing collisions to all of its…
Read moreFocus on the Run Coordinators of the LHC Experiments
As the preparations for Run2 are coming to an end, and the first collisions are scheduled to take place in a few weeks, the control rooms of the LHC experiments have become hives of activity, getting ready to record the first data. Run Coordinators…
Read moreGreg 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…
Read moreCMS: LS1 – A Short Summary and an Outlook to the Endgame
After almost two years of shutdown, all planned upgrades of CMS have been performed. The endcap muon system now has a complete forth layer with additional Cathode Strip Chambers (CSC) and Restive Plate Chambers (RPC), enclosed by two new 120t…
Read moreCMS tests new Resistive Plate Chambers
With the increase of the LHC luminosity foreseen in the coming years many detectors currently used in the different LHC experiments will be dramatically impacted and some will have to be replaced. The new ones should be capable not only to support…
Read moreRD53: Development of pixel readout integrated circuits for extreme rate and radiation.
In June 2013 the LHCC has endorsed the establishment of a new R&D collaboration, RD53, to address the challenges of making readout integrated circuits for the phase 2 pixel detector upgrades of ATLAS and CMS, as well as long term developments of…
Read moreThe CMS PIX Phase I upgrade CO2 cooling: a full scale prototype ready for tests
Low temperature cooling systems using evaporative Carbon Dioxide (CO2) have been used for particle detectors since 2000 by the Silicon Tracker of the AMS02 experiment at the ISS (International Space Station) and for the VELO vertex detector of the…
Read moreCMS – Highlights and Perspectives from UXC55
A very busy year of shutdown activities comes to an end, bringing us to the half-way-point of LS1. The most visible change of CMS is an additional fourth shielding disk on the +z end (pointing towards the Jura) of the detector, which is currently…
Read moreScintillating crystals: a new window in medical imaging
For science fiction fans antimatter is the high energy fuel that accelerates spaceships faster than the speed of light. In the real world however it has more down to Earth yet extremely useful applications, mainly in the medical field. Positrons are…
Read moreLHC upgrades: the landscape becomes clearer
Many of you have contacted me recently concerning the LHC detector upgrades, with some questions about the planning of future work. It is true that the one year stop after the LHC incident in September 2008, the need of a further shutdown to…
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