Construction, assembly and testing of the ATLAS hadronic end-cap calorimeter

The construction and assembly of the four wheels of the ATLAS hadronic end-cap calorimeter and their insertion into the two end-cap cryostats are described. The results of the qualification tests prior to installation of the two cryostats in the ATLAS experimental cavern are reviewed

Performance of the Signal Vacuum Cables of the Liquid Argon Calorimeter Endcap Cryostat Signal Feedthroughs

This note presents of brief summary of the design specification and the performance under test of the signal vacuum cables which are used in the signal feedthroughs of the ATLAS liquid argon calorimeter endcap cryostats

Signal feedthroughs for the ATLAS barrel and endcap calorimeters

The construction of the signal feedthroughs for the barrel and endcap ATLAS liquid argon calorimeters is described. The feedthroughs provide a high density and radiation hard method to extract signals from the cryogenic environment of the calorimeters using a novel design based on flexible kapton circuit board transmission lines

Performance of the ATLAS Hadronic End-Cap Calorimeter in Beam Tests

Modules of the ATLAS liquid argon Hadronic End-cap calorimeter (HEC) were exposed to beams of electrons, muons and pions in the energy range 6GeV<E<200GeV at the CERN SPS. A description of the HEC and of the beam test setup are given. Results on the energy response and resolution are presented and compared with simulations. The ATLAS energy resolution for jets in the end-cap region is inferred and meets the ATLAS requirements

Hadronic calibration of the ATLAS liquid argon end-cap calorimeter in the pseudorapidity region 1.6 <|η\eta|< 1.8 in beam tests

A full azimuthal phi-wedge of the ATLAS liquid argon end-cap calorimeter has been exposed to beams of electrons, muons and pions in the energy range 6 GeV <or= E <or= 200 GeV at the CERN SPS. The angular region studied corresponds to the ATLAS impact position around the pseudorapidity interval 1.6 <|\eta| < 1.8. The beam test set-up is described. A detailed study of the performance is given as well as the related intercalibration constants obtained. Following the ATLAS hadronic calibration proposal, a first study of the hadron calibration using a weighting ansatz is presented. The results are compared to predictions from Monte Carlo simulations, based on GEANT3 and GEANT4 models