Date: Wednesday 18th February 2004
Title: Online Tracking for the Trigger of ATLAS
Speaker: Dr Nikos Konstantinidis (UCL)
Abstract
Track reconstruction will have a central role in event
selection at the second level trigger of ATLAS, but the
strict time constraints and the harsh conditions at the
LHC make it a very challenging task.
After an overview of the ATLAS trigger strategy, I will
concentrate on the tracking needs at Level-2 and will
describe a set of pattern recognition algorithms designed
for fast track reconstruction. These algorithms satisfy
all Level-2 requirements in ATLAS and their general philosophy
can be applicable to all multi-collision hadronic environments.
An important use of online tracking is for b-jet identification. I
will discuss the impact of online b-tagging capabilities on
the ATLAS physics potential and to what extend the LEP b-tagging
knowledge can be of use at the LHC.