The detector has shown excellent performance, and the data taking efficiency has been above 90% on average. In july 2012, along with atlas, cms tentatively discovered the higgs boson. Pc performance tuning second layer performance measurements high level trigger. Over 4,000 people, representing 206 scientific institutes and 47 countries, form the cms collaboration who built and now operate the detector. Cms detector performance summaries cern document server.
In addition to detecting the cms, in some cases we are able to accurately detect which version of the cms is being used. Cms tracker performance results for full run 2 legacy reprocessing cms collaboration during the lhc long shutdown 2, the cms experiment started a collaborationwide effort to recalibrate the data and optimize the simulation, reconstruction and analysis software in order to reprocess the data collected during lhc run 2 with uniform software and detector calibrations legacy processing. Overview of the cms detector performance at lhc run 2 mdpi. Davide ceresa cern for the development of the macro pixel asic mpa, the readout chip for the innovative pixelstrip modules for the tracker upgrade.
An upgrade program is planned for the lhc which will smoothly bring the. The compact muon solenoid or cms detector sits at one of these four collision points. Detector performance and software, cernlhcc 2006001. Cms imagings product line includes mri, ct, digital xray, advanced fluoroscopic systems, interventional xray. Cms is 21 metres long, 15 m in diameter, and weighs about 14,000 tonnes. The windows central management software cms software for viewtron surveillance dvrs allows users to connect to and view security cameras from multiple dvr locations using a central client application.
The cms collaboration abstract the performance of all subsystems of the cms muon detector is studied by using 7 tev pp collision data from the lhc in 2010. In this report, the performance of the different detectors comprising the cms muon system, together with the muon trigger performance, evaluated using data. It was conceived to study protonproton and leadlead collisions at a centreofmass energy of 14 tev 5. Here we report the performance of a monitoring program that we designed and tested with 900 gev, 2. Cms stands for content management system and it refers to the environment in which a website operates. Cms tracker performance results for full run 2 legacy reprocessing cms collaboration during the lhc long shutdown 2, the cms experiment started a collaborationwide effort to recalibrate the data and optimize the simulation, reconstruction and analysis software in order to reprocess the data collected during lhc run 2 with uniform software and detector calibrations legacy. Now, cms scientists want to push beyond the known laws of physics and. This page provides basic information about medicare andor medicaid provider compliance with national fire protection association nfpa 101 life safety code lsc and nfpa 99 health care facilities code hcfc requirements and includes links to applicable laws, regulations, and compliance information. Cern document server cms detector performance summaries.
With increasing lhc luminosity, cms has proved to be capable to trigger efficiently on physics events and to reconstruct them even in presence of many superimposed interactions in the same bunch crossing, the socalled high pileup conditions. During the recent magnet test and cosmic challenge mtcc the muon reconstruction was employed successfully to reconstruct cosmic muons traversing a full slice of the cms detector. Status and performance of the compact muon solenoid pixel. The cms collaboration has developed a fast monte carlo simulation of the cms detector with event production rates 100 times faster than the geant4based simulation, with nonetheless comparable accuracy for most of the physics objects typically considered in the analyses. The data acquisition software the cms pixel detectors data acquisition software. The expected performance has been studied in detail using monte carlo simulation. The performance and strategies used in electron reconstruction and selection at cms are presented based on data corresponding to an integrated luminosity of 19. Some content management systems also offer hosting. The control system software the detector control system rack mounted pcs about 100 are also located in usc55 in s1, s2 and s4 distributed in 14 racks. The detector operates at the large hadron collider lhc at cern. Surveillance dvr remote access client software cms the idvrpro surveillance dvrs can be accessed remotely using the central management software cms software that is included. Detector performance and software article pdf available january 2006 with 477 reads how we measure reads. Cms paper cft09001 cms paper 20100202 commissioning and performance of the cms pixel tracker with cosmic ray muons the cms collaboration abstract the pixel detector of the compact muon solenoid experiment consists of three barrel layers and two disks for each endcap.
Cms acts as a giant, highspeed camera, taking 3d photographs of particle collisions from all directions up to 40 million times. The cms muon system exploits three different detection technologies in both the central and forward regions, in order to provide a good muon identification and efficient event selection via a multilevel trigger. The performance of the modified system is studied using protonproton collision data at centerofmass energy vs tev, collected at the. A quadrant view of the cms detector is shown in fig. A content management system, or cms, is a piece of software designed to help users create and edit a website. Lhc cms detector upgrades project project cost bases of. The performance of the modified system is studied using protonproton collision data at centerofmass energy vs tev, collected at the lhc in 2015 and 2016.
The paper focuses on prompt isolated electrons with transverse momenta ranging from about 5 to a few 100 gev. The cms pixel detectors were assembled at fnal for the fpix and at psi for the bpix. After many years of very careful and innovative work, the cms collaboration has successfully constructed an outstanding lhc detector that fully meets the vision and performance requirements conceived at the start of cms. Muon reconstruction and identification at cms sciencedirect. Detector awards 2017 tracker pirmin berger eth for significant contributions to the construction, testing and commissioning of the phase1 pixel vertex detector of cms. Performance and upgrade plans for the cms detector. The lhc beams travel in opposite directions along the central axis of the cms cylinder colliding in the middle of the cms detector. Our detection algorithm checks for thousands of artifacts to determine if the requested page was generated by a cms. By knowing the type of cms being used you ca get a feel for the scripts and templates that might be installed.
Remote video our video monitoring services help you to fulfill two critical functions for your customers. Hang tight, well have an answer for you in a few seconds. As long as this tool is so popular, it was decided to. The compact muon solenoid cms detector is described. In this paper we present the features and the expected performance of the redesigned cms simulation software, as well as the experience from the migration process. The detector is composed by inner standard model of elementary particles. Endcap muon system integration, cms manager of the emu chamber factory for the upgrade and has served as the deputy convener of the emu detector performance group and the us cms l3 emu onsite operations manager. In 2012, it codiscovered the elusive higgs boson with its sister experiment, atlas. Today, the cms simulation suite is based on the two principal components geant4 detector simulation toolkit and the new cms offline framework and event data model. Performance of the cms muon detector and muon reconstruction. Cmsmuo16001 performance of the cms muon detector and muon reconstruction with protonproton collisions at p s tev the cms collaboration abstract the cms muon detector system, muon reconstruction software, and highlevel trigger underwent signi. A more detailed description of the cms detector, together with a.
Cms muo16001 performance of the cms muon detector and muon reconstruction with protonproton collisions at p s tev the cms collaboration abstract the cms muon detector system, muon reconstruction software, and highlevel trigger underwent signi. It is located in a cavern at cessy in france, just across the border from geneva. Its important to note, however, cms do much more than help. The cms muon detector system, muon reconstruction software, and highlevel trigger underwent significant changes in 202014 in preparation for running at higher lhc collision energy and instantaneous luminosity. Surveillance cms software setup for viewtron cctv and hd.
If you want to know what cms a website is using, come on in. Cern document server access articles, reports and multimedia content in hep. A website hosted on a cms developers domain is a dead giveaway. Performance monitoring of the software frameworks for the lhc experiments page 3 of 34 abstract this document presents the extraction, maintenance and performance monitoring of the latest benchmarks representative of the 4 major software experiment frameworks at cern, namely atlas, alice, cms and lhcb. Excellent results regarding the cms detector triggering capabilities and its performance for tracking and vertexing, particle identification, reconstruction. Abstract met monitoring metmon scheme and results 7tev. Experience with commissioning of the cms pixel detector. The cms muon system and its performance in the cms cosmic. I have been mainly involved with the online software and daq of the pixel detector. The cms muon detector system, muon reconstruction software, and highlevel trigger underwent significant changes in 202014 in.
Many people use cms to manage the content of their website easier. Performance of the cms muon detector with 7 tev pp. The software lets the user configure groups of connections, then pick and choose which cameras should be grouped into names display screens. Performance of electron reconstruction and selection with. High throughput data acquisition at the cms experiment at. Having access to a cms detector is important if you want to know how to find the cms, platform or technology used by a website. Commissioning and performance of the cms pixel tracker. References discovery paper observation of a new boson at a mass of 125 gev with the cms experiment at the lhc cms collaboration, arxiv. The fast simulation of the cms detector at lhc iopscience. We can currently detect hundreds of cms and are continuing to add more. In summer 2006 the cms solenoid has been switched on for the first time, generating successfully the designed magnetic field of b 4 t.