Speaker
Description
CALICE collaboration is developing highly granular calorimeters suitable for individual
reconstruction of particles in the jets and for Particle Flow Algorithms. Such calorimeters
should provide the best jet energy resolution at future high energy e + e - colliders. At high jet
energies, typically above 100 GeV, the jet particle showers start to overlap, and the
resolution is determined by the ability to separate them. Here, we present the results on the
separation of two overlapping electromagnetic or electromagnetic - hadronic showers
obtained with CALICE physical prototypes (silicon-tungsten, SiW ECAL and Analog
HCAL) and using International Large Detector (ILD) Monte Carlo. We use three available
reconstruction programs (Pandora, Garlic and Arbor).
In addition, we report on the study of hadron interactions in CALICE SiW ECAL physical
prototype based on a simple algorithm finding tracks of secondary particles. We define
several observables to compare data and Monte Carlo, the agreement is always within 20%.
