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Alignment of the CMS silicon tracker during commissioning with cosmic rays
(IOP Publishing, 2010)
The CMS silicon tracker, consisting of 1440 silicon pixel and 15 148 silicon strip detector modules, has been aligned using more than three million cosmic ray charged particles, with additional information from optical ...
Commissioning and performance of the CMS pixel tracker with cosmic ray muons
(IOP Publishing, 2010)
The pixel detector of the Compact Muon Solenoid experiment consists of three barrel layers and two disks for each endcap. The detector was installed in summer 2008, commissioned with charge injections, and operated in the ...
Performance of the CMS cathode strip chambers with cosmic rays
(IOP Publishing, 2010)
The Cathode Strip Chambers (CSCs) constitute the primary muon tracking device in the CMS endcaps. Their performance has been evaluated using data taken during a cosmic ray run in fall 2008. Measured noise levels are low, ...
Identification and filtering of uncharacteristic noise in the CMS hadron calorimeter
(IOP Publishing, 2010)
Commissioning studies of the CMS hadron calorimeter have identified sporadic uncharacteristic noise and a small number of malfunctioning calorimeter channels. Algorithms have been developed to identify and address these ...
Performance of CMS muon reconstruction in cosmic-ray events
(IOP Publishing, 2010)
The performance of muon reconstruction in CMS is evaluated using a large data sample of cosmic-ray muons recorded in 2008. Efficiencies of various high-level trigger, identification, and reconstruction algorithms have been ...
Fine synchronization of the CMS muon drift-tube local trigger using cosmic rays
(IOP Publishing, 2010)
The CMS experiment uses self-triggering arrays of drift tubes in the barrel muon trigger to perform the identification of the correct bunch crossing. The identification is unique only if the trigger chain is correctly ...
Performance of the CMS hadron calorimeter with cosmic ray muons and LHC beam data
(IOP Publishing, 2010)
The CMS Hadron Calorimeter in the barrel, endcap and forward regions is fully commissioned. Cosmic ray data were taken with and without magnetic field at the surface hall and after installation in the experimental hall, ...
Commissioning of the CMS experiment and the cosmic run at four tesla
(IOP Publishing, 2010)
The CMS Collaboration conducted a month-long data-taking exercise known as the Cosmic Run At Four Tesla in late 2008 in order to complete the commissioning of the experiment for extended operation. The operational lessons ...
Commissioning of the CMS High-Level Trigger with cosmic rays
(IOP Publishing, 2010)
The CMS High-Level Trigger (HLT) is responsible for ensuring that data samples with potentially interesting events are recorded with high efficiency and good quality. This paper gives an overview of the HLT and focuses on ...
Performance study of the CMS barrel resistive plate chambers with cosmic rays
(IOP Publishing, 2010)
In October and November 2008, the CMS collaboration conducted a programme of cosmic ray data taking, which has recorded about 270 million events. The Resistive Plate Chamber system, which is part of the CMS muon detection ...
