The CMS experiment at the CERN LHC

Journal article

The Compact Muon Solenoid (CMS) detector is described. The detector operates at the Large Hadron Collider (LHC) at CERN. It was conceived to study proton-proton (and lead-lead) collisions at a centre-of-mass energy of 14 TeV (5.5 TeV nucleon-nucleon) and at luminosities up to 1034cm -2s-1 (1027cm-2s-1). At the core of the CMS detector sits a high-magnetic-field and large-bore superconducting solenoid surrounding an all-silicon pixel and strip tracker, a lead-tungstate scintillating-crystals electromagnetic calorimeter, and a brass-scintillator sampling hadron calorimeter. The iron yoke of the flux-return is instrumented with four stations of muon detectors covering most of the 4π solid angle. Forward sampling calorimeters extend the pseudo-rapidity coverage to high values (|n | ≤ 5) assuring very good hermeticity. The overall dimensions of the CMS detector are a length of 21.6 m, a diameter of 14.6 m and a total weight of 12500t. © 2008 IOP Publishing Ltd and SISSA.

Authors: Chatrchyan, S; Hmayakyan, G; Khachatryan, V; Sirunyan, A; Adam, W

• Publisher: Institute of Physics Publishing
• Journal: Journal of Instrumentation
• Volume: 3
• Issue: 8
• Publication date: 2008-01-01
• DOI: 10.1088/1748-0221/3/08/S08004
• EISSN: 1748-0221
• ISSN: 1748-0221
• Language: English
• Keywords: Control and monitor systems online; Data processing methods; Data acquisition concepts; Detector cooling and thermo-stabilization; Gamma detectors; Manufacturing; VLSI circuits; Detector control systems; Detector design and construction technologies and materials; Particle identification methods; Software architectures; Cluster finding; Optical detector readout concepts; Data acquisition circuits; Detector alignment and calibration methods; Calorimeters; Large detector systems for particle and astroparticle physics; Digital signal processing; Computing; Voltage distributions; Electronic detector readout concepts; Analogue electronic circuits; Analysis and statistical methods; Gaseous detectors; Calibration and fitting methods; Pattern recognition; Trigger concepts and systems; Detector grounding; Solid state detectors; Digital electronic circuits; Special cables; Data reduction methods; Modular electronics; Scintillation and light emission processes; Particle tracking detectors; Overall mechanics design; Scintillators; Online farms and online filtering; Instrumentation for particle accelerators and storage rings-high energy; Front-end electronics for detector readout; Spectrometers