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View article: Mechanical construction and installation of the ATLAS tile calorimeter
Mechanical construction and installation of the ATLAS tile calorimeter Open
This paper summarises the mechanical construction andinstallation of the Tile Calorimeter for the ATLASexperiment at the Large Hadron Collider in CERN, Switzerland. The TileCalorimeter is a sampling calorimeter using scintillator as the se…
View article: The optical instrumentation of the ATLAS Tile Calorimeter
The optical instrumentation of the ATLAS Tile Calorimeter Open
The purpose of this Note is to describe the optical assembly procedure called here Optical Instrumentation and the quality tests conducted on the assembled units. Altogether, 65 Barrel (or LB) modules were constructed - including one spare…
View article: Testbeam studies of production modules of the ATLAS Tile Calorimeter
Testbeam studies of production modules of the ATLAS Tile Calorimeter Open
We report test beam studies of 11% of the production ATLAS Tile Calorimeter modules. The modules were equipped with production front-end electronics and all the calibration systems planned for the final detector. The studies used muon, ele…
View article: The ATLAS Tile Calorimeter digitizer
The ATLAS Tile Calorimeter digitizer Open
The ATLAS Tile Calorimeter digitizer system samples photomultiplier signals from the scintillating tiles of the hadronic calorimeter. For each channel a pair of 10-bit ADCs digitize high and low gain signals at 40.08 MHz to provide the nec…
View article: Hadronic calorimeter performance in the ATLAS combined testbeam 2004
Hadronic calorimeter performance in the ATLAS combined testbeam 2004 Open
During the ATLAS combined testbeam 2004 a full slice of the ATLAS detector was tested. For the hadron calorimeter three barrel modules, and three extended barrel modules were tested. All the Tile modules except the barrel module at the bot…
View article: ATLAS TileCal Digitizer Test System and Quality Control
ATLAS TileCal Digitizer Test System and Quality Control Open
This document describes the tests of the quality control procedure for the ATLAS TileCal digitizer unit. Since the ATLAS detector will fill most of the space in the detector cavity it will be difficult to disassemble parts of the detector.…
View article: Functional irradiation tests of the ATLAS TileCal digitizer using FPGA testbenches
Functional irradiation tests of the ATLAS TileCal digitizer using FPGA testbenches Open
The new LHC particle accelerator now being built at CERN will have a radically increased event rate and higher energy. To accommodate this, instrumentation for LHC experiments has had to be constructed using new ideas and the latest availa…
View article: An optical link interface for the Tile-Calorimeter in ATLAS
An optical link interface for the Tile-Calorimeter in ATLAS Open
The new LHC particle accelerator now being built at CERN will have a radically increased event rate and higher energy. To accommodate this, instrumentation for LHC experiments has had to be constructed using new ideas and the latest availa…
View article: CP, T and CPT at CPLEAR
CP, T and CPT at CPLEAR Open
Using strangeness tagging at production time, CPLEAR measures time-dependent decay rate asymmetries between $K^0$ and $\\bar{K}^0$, for picnic and semileptonic decays. Parameters describing CP, T, and CPT violation can be obtained with hig…
View article: Production and Test of the ATLAS Hadronic Calorimeter Digitizer
Production and Test of the ATLAS Hadronic Calorimeter Digitizer Open
The new LHC particle accelerator now being built at CERN will have a radically increased event rate and higher energy. To accommodate this, instrumentation for LHC experiments has had to be constructed using new ideas and the latest availa…
View article: Hadronic shower development in Iron-Scintillator Tile Calorimetry
Hadronic shower development in Iron-Scintillator Tile Calorimetry Open
The lateral and longitudinal profiles of hadronic showers detected by a prototype of the ATLAS Iron-Scintillator Tile Hadron Calorimeter have been investigated. This calorimeter presents a unique longitudinal configuration of scintillator …
View article: Search for CP violation in the decay of neutral kaons to π+π−π0
Search for CP violation in the decay of neutral kaons to π+π−π0 Open
The time-dependent rate asymmetry of initial \\ko and \\kob decaying into \\threepi was measured in order to reveal the CP-violating amplitude of the \\ks \\rightarrow \\threepi decay. For the real and the imaginary parts of \\eta_{+-0}, w…
View article: Measurement of the KL-KS mass difference using semileptonic decays of tagged neutral kaons
Measurement of the KL-KS mass difference using semileptonic decays of tagged neutral kaons Open
We present a new measurement of the KL-KS mass difference (Δm) using semileptonic decays of neutral kaons. The measurement yields Δm = (0.5274 ± 0.0029stat. ± 0.0005syst.) × 1010ħ/s.
View article: Measurement of the CP violation parameter η+− using tagged K0 and 0
Measurement of the CP violation parameter η+− using tagged K0 and 0 Open
The CP violation parameter η+- is determined through the eigentime-dependent asymmetry in the rates of initially tagged K0 and K0 decaying to π+π-. The obtained values are |η+-| = (2.312 ± 0.043stat. ± 0.030syst. ± 0.011τs) × 10-3 and Φ+- …