CMS-detektor: Sjekk hvilket CMS et nettsted bruker (2024)

FAQs

How does a CMS detector work? ›

The CMS detector is built around a huge solenoid magnet. This takes the form of a cylindrical coil of superconducting cable that generates a field of 4 tesla, about 100,000 times the magnetic field of the Earth. The field is confined by a steel “yoke” that forms the bulk of the detector's 14,000-tonne weight.

An unusual feature of the CMS detector is that instead of being built in-situ like the other giant detectors of the LHC experiments, it was constructed in 15 sections at ground level before being lowered into an underground cavern near Cessy in France and then reassembled.

CMS is designed as a general-purpose detector, capable of studying many aspects of proton collisions at 0.9–13 TeV, the center-of-mass energy of the LHC particle accelerator.

The CMS magnet system consists of a superconducting coil, the magnet yoke (barrel and endcap), a vacuum tank and ancillaries such as cryogenics, power supplies and process controls. Inside the bore of the magnet sit the inner tracker and the calorimetry, while outside is the flux return system and muon detector.

The CMS Inner Tracker

distance of 4 to 11 cm from the beam line on a cylindrical barrel and end-caps structure with total length of 92 cm, this detector will not be further described in this paper.

Most tracking devices do not make particle tracks directly visible, but record tiny electrical signals that particles trigger as they move through the device. A computer program then reconstructs the recorded patterns of tracks.

The data are based on claims that the hospital or facility submitted to CMS. The hospital or facility has reported discrepancies in their claims data. This footnote is applied when a hospital or facility alerts CMS of a possible issue with the claims data used to calculate results for this measure.

A. Continuous Monitoring Program: As part of the CMS Continuous Monitoring Program, the Contractor's SSO shall be the official point of contact for CMS security data calls.

The CMS oversees programs including Medicare, Medicaid, the Children's Health Insurance Program (CHIP), and the state and federal health insurance marketplaces. CMS collects and analyzes data, produces research reports, and works to eliminate instances of fraud and abuse within the healthcare system.

From here, the beams inside the LHC are made to collide at four locations around the accelerator ring, corresponding to the positions of four particle detectors – ATLAS, CMS, ALICE and LHCb.

Can the LHC detect dark matter? ›

Experiments at the Large Hadron Collider (LHC) may provide more direct clues about dark matter. Many theories say the dark matter particles would be light enough to be produced at the LHC. If they were created at the LHC, they would escape through the detectors unnoticed.

Underground tours are extremely rare and limited to smaller groups. The LHC tunnel is never accessible to visitors. Only the experiment caverns can be visited during LHC shutdowns. But there are plenty of interesting places to visit above ground!

The CMS system database is used to store BI platform information, such as user, server, folder, document, configuration, and authentication details. It is maintained by the Central Management Server (CMS), and in other documentation may be referred to as the system database or repository.

Reference the “CMS Testing Framework Overview” for the various test functions that should be considered for inclusion in the Test Plan for each of the main categories of tests (i.e., development testing, validation testing, implementation testing, and operational testing) prescribed in the Framework.

A content management system (CMS) is an application that is used to manage content, allowing multiple contributors to create, edit and publish. Content in a CMS is typically stored in a database and displayed in a presentation layer based on a set of templates like a website.

The ATLAS detector is about 25 m high, 45 m long and weighs about 7000 tons. The CMS detector is a bit smaller, but it is much heavier (about 12 000 tons). Overall, these detectors take the role of high-speed three-dimensional digital cameras.

There are 3 main types of sub-detector: Tracking device – detects and reveals the path of a particle. Calorimeter – stops, absorbs and measures the energy of a particle. Particle identification detector – identifies the type of particle using various techniques.

ATLAS is one of the particle detector systems in the LHC. It is made of different layers which detect different types of particle. A new particle created in the high energy collision will travel out through the different layers of ATLAS, interacting with the detector as it passes.

ATLAS and CMS are the two 'general-purpose' detectors at the LHC. They're looking for any new particles or unknown physics which the LHC's record-breakingly high energies might allow us to observe for the first time.