The CMS experiment at the CERN LHC


Chatrchyan S., Hmayakyan G., Khachatryan V., Sirunyan A. M. , Adam W., Bauer T., ...More

JOURNAL OF INSTRUMENTATION, vol.3, 2008 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Review
  • Volume: 3
  • Publication Date: 2008
  • Doi Number: 10.1088/1748-0221/3/08/s08004
  • Title of Journal : JOURNAL OF INSTRUMENTATION
  • Keywords: Instrumentation for particle accelerators and storage rings, high energy, Gaseous detectors, Scintillators, scintillation and light emission processes, Solid state detectors, Calorimeters, Gamma detectors, Large detector systems for particle and astroparticle physics, Particle identification methods, Particle tracking detectors, Spectrometers, Analogue electronic circuits, Control and monitor systems online, Data acquisition circuits, Data acquisition concepts, Detector control systems, Digital electronic circuits, Digital signal processing, Electronic detector readout concepts, Front-end electronics for detector readout, Modular electronics, Online farms and online filtering, Optical detector readout concepts, Trigger concepts and systems, VLSI circuits, Analysis and statistical methods, Computing, Data processing methods, Data reduction methods, Pattern recognition, cluster finding, calibration and fitting methods, Software architectures, Detector alignment and calibration methods, Detector cooling and thermo-stabilization, Detector design and construction technologies and materials, Detector grounding, Manufacturing, Overall mechanics design, Special cables, Voltage distributions, RESISTIVE PLATE CHAMBERS, PBWO4 SCINTILLATING CRYSTALS, LEAD TUNGSTATE CRYSTALS, CATHODE STRIP CHAMBERS, LONG-TERM PERFORMANCE, FRONT-END ELECTRONICS, PROTON-INDUCED DAMAGE, LEVEL GLOBAL TRIGGER, SILICON SENSORS, VACUUM PHOTOTRIODES

Abstract

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 10(34)cm(-2)s(-1) (10(27)cm(-2)s(-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 4 pi solid angle. Forward sampling calorimeters extend the pseudo-rapidity coverage to high values (vertical bar eta vertical bar <= 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 12500 t.