Valeri Saveliev
Moscow Engineering and Physics Institute
Moscow, Russia
Email: saveliev@x4u2.desy.de
savel@hed.mephi.msk.su
Abstract
Lepton identification is the most crucial features of
HEP experiments. HERA-B experiment to stady CP violation in the B system
Using an Internal Target at the HERA Proton Ring. The main goal of the
HERA-B experiment is the CP violation measurement in B0 -> J/psiK0s decays,
generally accepted as the best candidate, both theoretically and
experimentally, for the study of CP assymetry.
Good lepton identification is an inmportant condition of
decay reconstruction,
lepton tadgging and the additional physics study. The electron
identification by Transition Radiation (TR) is realized by the detection
of Transition RadiationX-rays which radiated by the charge particles
with Lorentz factor more than 1000.
Monte Carlo simulation of transition readiation (TR) has been made on base of model compatible with GEANT - Detector Description and Simulation Tool. The MC TR model describes the process of particle passing through the matter taking into account: the radiation of transition radiation X-rays including their energy and angular spectra, T R photons absorption including the secondary fluorescent X-ray for the Xe K,L shell, absorption of TR X-rays in radiator and various materials. Detailed simulation of ionization losses in thin gas layers, taking into account the primary collisions distribution, calculation the energy deposition in gas layers, electron s drift with real dependance of drift velosity vs electric field.
Submitter's Name: Valeri Saveliev
Submitter's Institution: Moscow Engineering and Physics Institute
Moscow, Russia
Submitter's EMAIL address:saveliev@x4u2.desy.de savel@hed.mephi.msk.su
Submitter's phone number: 007-095-3247105
Intended Speaker's Name: Valeri Saveliev