Results from CALICE fine-grained calorimetry

by Angela Isabela Lucaci Timoce

Friday 18 Mar 2011, 11:00 → 12:00 Europe/Zurich

TH Theory Conference Room (CERN)

The CALICE collaboration is developing electromagnetic and hadronic calorimeters for a future linear collider. According to simulations, the optimal jet energy resolution for such a collider can be obtained by reconstructing all charged particles in a tracking system, while the neutral particles are measured in the calorimeters. This so-called 'particle flow approach' imposes stringent requirements on the lateral and longitudinal segmentation of the calorimeter. The concept of the particle flow approach, in the linear collider context, will be discussed. An extensive test beam program, with a highly granular analog HCAL made of steel slabs and scintillator tiles read out by photon detectors (silicon photomultipliers), a Si-W ECAL and a tail catcher, has been carried out by CALICE at CERN in 2007. The results obtained, as well as their comparison with recently developed GEANT4 models will be presented. In addition, an application of the Pandora PFA algorithm on the CALICE test beam data will be shown. In the last months, CALICE has taken data with the analog HCAL, but this time with tungsten absorber plates (CERN, November 2010), and also with an RPC based digital HCAL (FNAL November 2010). These new setups and prospects will be shortly described.

Slides talk.pdf