The compact muon solenoid cms experiment is one of two large generalpurpose particle physics detectors built on the large hadron collider lhc at cern in switzerland and france. The compact muon solenoid cms experiment at cerns large hadron collider lhc how cms works some of cmss motivations the higgs searches at cms experiment hcal. The compact muon solenoid is one of the two multipurpose experiments at the cern large hadron collider. The compact muon solenoid cms trigger and data acquisition 34 16 million channels charge time pattern 40 mhz collision rate 100 khz level1 trigger 1. The conceptual design of cms started taking shape 16 years ago with physicists trying to work out how to build such a large detector and install it underground. The compact muon solenoid cms is one of the experiments at the large hadron collider lhc. Although it has the same scientific goals as the atlas experiment. Pdf the compact muon solenoid experiment at the cern large hadron collider will study protonproton collisions at unprecedented. The reasonable agreement between data and predictions from madgraph monte carlo provides con dence in using madgraph for new physics searches that involve photons and.
Ken bloom unl cyberinfrastructure workshop august 15, 2005 computing demands cms must provide computing to handle huge data rates and sizes, and strenuous demands on processing. The physics reach of the compact muon solenoid, under construction to study protonproton collisions at a centreofmass energy of 14 tev, is presented at design luminosity of 1034cm2s1 and. Wilt submitted to the department of physics on may 11, 2007, in partial fulfillment of the requirements for the degree of bachelor of science in physics abstract. Cms cr 2009100 the compact muon solenoid experiment. The compact muon solenoid cms is a generalpurpose detector at the large hadron collider lhc. In order to sustain such a rate, a high granularity detector is built around the 3. Cms cern, ch1211 geneva 23, switzerland conference report 16 may 2008 design and performance of the alignment system for the cms muon endcaps marcus hohlmann 1, gyongyi baksay. Muon electron tau neutrino muon neutrino electron neutrino bottom strange down top charm up particles leptons111 0 0 0 23 23 23 electric charge electric charge electric charge electric charge quarks each quark. Preparation cms the compact muon solenoid armenia, cis yerevan, yerevan physics institute g. Theoretical and experimental approaches to dark energy and the cosmological constant problem. Highlights from the compact muon solenoid cms experiment. The compact muon solenoid experiment at the lhc cms docdb. Plato said,look to the perfection of the heavens for truth, while aristotle said look around you at what is, if you would know the truth to remember.
The crystals are cut as pyramid frustum and the light produced in each of them is readout by two avalanche photodiodes apds, glued to the major base of the crystal. Pdf the compact muon solenoid experiment at the large hadron. Cosmic rays detected in the muon chambers were used to trigger the readout of all cms subdetectors. Compact muon solenoid discovery potential for the minimal supergravity model. The compact muon solenoid cms experiment 1 is one of the four large experiments at the cern large hadron collider lhc with a wide range of physics goals. Cms cern, ch1211 geneva 23, switzerland cms note 18 july 1998 a simpli.
It has a broad physics programme ranging from studying the standard model including the higgs boson to searching for extra dimensions and particles that could make up dark matter. The compact muon solenoid cms experiment is constructed as a generalpurpose experiment with excellent particle identi cation capability able to capitalize on the rich physics program of the lhc, and its design is described in more detail in 1. For minimum bias events without pileup, a resolution of 6. Compact muon solenoid magnet reaches full field september 2006 weighing in at more than,000 tons, the compact muon solenoid experiments magnet is built around a. Charged multiplicity measurement for simulated events in. Although it has the same scientific goals as the atlas experiment, it uses different technical solutions and a. Compact muon solenoid this experiment was not only designed to detect muons but a wide. Kodolova moscow state university, moscow, russia m. Compact muon solenoid discovery potential for the minimal.
Cms cern, ch1211 geneva 23, switzerland cms note may 12, 2006 detection of z0 gauge bosons in the dimuon decay mode in cms robert cousins, jason mumford, viatcheslav valuev university of. The barrel part of the electromagnetic calorimeter of the compact muon solenoid cms at the large hadron collider of cern 1 will consist of 61,200 pbwo4 pwo crystals. The full commissioning of the calibration procedure has been deployed in year 2008 with the cms computing, software and analysis challenge csa08, which has tested the full workflow needed for cms datataking. Compact muon solenoid ippp conference management system. Cms has over 4000 particle physicists, engineers, computer scientists, technicians and students from around 200 institutes and universities from more than 40 countries. It will be largely assembled and tested on the surface before being lowered into a speciallyconstructed cavern at point 5 of the lhc.
Cms cern, ch121 gene1 va 23, switzerland conference report 20190814 nuclear modi. The compact muon solenoid or cms detector sits at one of these four collision points. The highlights of the recent activities and physics results leading up to the summer of 2018 from the compact muon solenoid cms. Cms acts as a giant, highspeed camera, taking 3d photographs of particle collisions from all directions up to 40 million times. The compact muon solenoid experiment mailing address. The caltech group at the compact muon solenoid cms of the cern large hadron collider, invites you to attend a seminar on tuesday december at 1 pm at lauritsen 269.
The compact muon solenoid cms experiment is one of two large general purpose particle. Compact muon solenoid other wise known as cms cms is a high energy physics experiment, that detects particles. Calibration techniques for the forward hadron calorimeter of the compact muon solenoid a thesis submitted to the faculty of the graduate school of the university of minnesota by perrie leon cole in partial fulfillment of the requirements for the degree of master of science dr. The performance of the compact muon solenoid detector for measuring missing transverse energy is evaluated using fully simulated pp collisions at a centerofmass energy of 14 tev at the large hadron collider.
Charged multiplicity measurement for simulated pp events in the compact muon solenoid cms detector by brian a. Compact muon solenoid detector zoltan szillasi, noemi beni cms collaboration. Calibration techniques for the forward hadron calorimeter. The cms experiment had a very successful physics program during the. The phaseii upgrades to the large hadron collider will introduce a variety of new measurement devices to the cms, including the highgranularity calorimeter hgcal. Cms cern, ch1211 geneva 23, switzerland cms note 24 january 1999 dimuon reconstruction in heavy ion collisions using a detailed description of cms geometry o. The compact muon solenoid cms detector is one of the two general purpose particle detectors being constructed at cerns large hadron collider lhc outside geneva, switzerland. Cyberinfrastructure solutions ken bloom unl cyberinfrastructure workshop august 15, 2005.
The solenoid resting on muon ring 0, along with one calorimetermuon endcap assembly of ecal, solenoid, and 2 muon rings. Letter of intent for a general purpose detector at the lhc. Cms is a particle detector that is designed to see a wide range of particles and phenomena produced in highenergy collisions in the lhc. R, b, g 3 colors the particle drawings are simple artistic representations. All structured data from the file and property namespaces is available under the creative commons cc0 license. This page was last edited on 22 october 2016, at 07. We show the number of events versus jet multiplicity along with ratios of. The goal of cms experiment is to investigate a wide range of physics, including the search for the higgs boson, extra dimensions, and particles that could make up dark matter. Cms cr2008045 the compact muon solenoid experiment. Approximately 3,600 people, representing 183 scientific institutes and 38 countries, form the cms collaboration who built and now operate the detector. Media in category compact muon solenoid the following 200 files are in this category, out of 226 total. The cms superconducting solenoid provided a magnetic. Timebased vertex reconstruction in the compact muon solenoid. The compact muon solenoid experiment conference report.
Like a cylindrical onion, different layers of detectors measure the different particles, and use this key data to build up a picture of events at the heart of the collision. The compact muon solenoid cms experiment is one of two large generalpurpose particle physics detectors built on the protonproton large hadron collider lhc at cern in switzerland and france. The silicon sensors for the compact muon solenoid tracker. Files are available under licenses specified on their description page.