Speaker
Norman Graf
(SLAC)
Description
The International Linear Collider (ILC) promises to provide electron-positron
collisions at unprecedented energy and luminosities. The relative democracy
with which final states are produced at these high energies places a premium
on the efficiency and resolution with which events can be reconstructed.
In particular, the physics program places very demanding requirements on
the dijet invariant mass resolution. Collider detectors have successfully
improved their jet energy resolutions by augmenting the calorimeteric
measurements with the momenta of charged particles measured in their
trackers
a posteriori.
We present studies which apply this paradigm to the design of ILC detectors,
proposing to achieve the requisite performance by measuring the charged
particle contribution to the jet energy using the track momenta and only
using calorimetric information for neutral particles. Designing detectors
to implement this algorithm requires a combined approach to the detector as
a whole, but since the crux of this technique is the ability
to uniquely identify and assign energy depositions to individual
particle showers, the calorimetry is emphasized. In this talk, we present
results based on a flexible simulation and analysis framework (slic &
org.lcsim). We describe a templated approach to the reconstruction which
allows various clustering and track-cluster association algorithms to be
quickly and efficiently implemented and compared. We demonstrate the
performance of the reconstruction on a number of detector models with
different choices of calorimeter absorber, active media and readout
segmentation as well as overall detector parameters such as the strength
of the magnetic field, magnet bore, aspect ratio, hermeticity, etc.
Summary
We present studies of ILC detector designs based on individual particle
reconstruction.
Primary authors
Norman Graf
(SLAC)
Steve Magill
(Argonne National Lab)