Abstract
With more than 15,000 silicon strip modules and an active silicon area of 200 m 2, the Compact Muon Solenoid silicon strip tracker will be the largest silicon tracker ever built. While module mass production has started in 2004, the detector construction has recently entered its crucial phase with modules being assembled onto larger substructures, which in turn are being integrated into the tracker barrel and end-cap structures. In this presentation the detector design will be introduced. The challenges and experiences of the silicon module mass production, with focus on the key components such as sensors and hybrids, will be presented. The status of the integration of modules onto the detector substructures, as well as the construction and integration of the large barrel and end-cap structures will be described. Finally, an overview will be given on the excellent performance of subsystems of the tracker as demonstrated by system tests and test beam experiments.
Highlights
The Compact Muon Solenoid (CMS) detector is currently under construction and will be installed underground at the LHC collider at CERN, near Geneva
The CMS detector consists of a precise muon spectrometer with a standalone resolution of δp┴/p┴≈10% at 10 GeV, a sampling brass hadron calorimeter, an electromagnetic lead-tungstate calorimeter with δE/E 30 GeV, a superconducting coil that provides a solenoidal 4 T magnetic field for momentum measurements, and a full silicon tracker [2, 3]
In the outer part of the tracker (TOB and three outermost the nine End-Cap (TEC) rings), in order to limit the number of channels, strip length and pitch are increased by about a factor of two, giving a surface of about 0.4 cm2 per channel
Summary
The Compact Muon Solenoid (CMS) detector is currently under construction and will be installed underground at the LHC collider at CERN, near Geneva. A luminosity of 1034 cm-2s-1 will produce on average 19 collisions in one single bunch crossing for nominal LHC operation [1]. This enables the CMS physicists to explore new regions of physical interest, conducting precision measurements and searches for new physics at the same time. The CMS detector consists of a precise muon spectrometer with a standalone resolution of δp┴/p┴≈10% at 10 GeV, a sampling brass hadron calorimeter, an electromagnetic lead-tungstate calorimeter with δE/E 30 GeV, a superconducting coil that provides a solenoidal 4 T magnetic field for momentum measurements, and a full silicon tracker [2, 3]
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