Speaker
Vakhtang tsulaia
Description
The ATLAS Detector consists of several major subsytems: an inner detector composed of
pixels, microstrip detectors and a transition radiation tracker; electromagnetic and
hadronic calorimetry, and a muon spectrometer. Over the last year, these systems have
been described in terms of a set of geometrical primitives known as GeoModel.
Software components for detector description interpret structured data from a
relational database and build from that a complete description of the detector. This
description is now used in the Geant-4 based simulation program and also for
reconstruction. Detector-specific services that are not handled in a generic way (e.g
strip pitches and calorimetric tower boundaries) are added as an additional layer
which is synched to the raw geometry. Detector misalignments may also be fed
through the model to both simulation and reconstruction. Visualization of the
detector geometry is accomplished through Open Inventor and its HEPVis extensions.
The ATLAS geometry system in the last year has undergone extensive visual debugging,
and experience with the new system has been gained not only though the data challenge
but also through the combined test beam. This talk gives an overview of the ATLAS
detector description and discusses operational experience with the system in the data
challenges and combined test beam.
Primary authors
A. NAIRZ
(CERN, Geneva, Switzerland)
A. VANIACHINE
(ANL, USA)
A. ZALITE
(Petersburg Nuclear Physics Institute, Russia)
B. SELIGMAN
(Nevis Laboratory, USA)
C. BOURDARIOS
(LAL-Orsay, France)
D. COSTANZO
(LBNL, USA)
D. POMAREDE
(CEA/DAPNIA, Saclay, France)
G. GORFINE
(NIKHEF, The Netherlands)
G. UNAL
(LAL-Orsay, France)
I. TRIGGER
(CERN, Geneva, Switzerland)
J. BOUDREAU
(Pittsburgh University, USA)
J. TOTH
(KFKI-RMKI, Hungary)
K.A. ASSAMAGAN
(BNL, USA)
M. LELCHUK
(Nevis Laboratory, USA)
P. Strizenec
(IEP SAS Slovakia)
S. BARANOV
(Albert-Ludwigs University, Germany)
S. Spagnolo
(DIP. FISICA E INFN, LECCE)
T. KITTELMANN
(Niels Bohr Institute, Denmark)
V. TSULAIA
(Pittsburgh University, USA)
Y. HASEGAWA
(Shinshu University, Japan)
