Calorimetry

Very high granularity calorimetry is under develpment with the aim of optimal jet reconstruction in the Particle Flow Approach, which has been shown to reach this optimum by bein able to disentangle in the calorimetric system the depositions generated by charged particles from the photonic contribution and the neutral hadrons.

To reach very high energies, tungsten radiators for hadronic calorimeters may be better suited than iron and the adequate detecting technique has to be identified. The position measurement in calorimeters dedicated to luminosity measurement imply testing them in an integrated infrastructure where additional information of a silicon tracker is used. Such improved infrastructure for calorimetry would consist of an integrated set-up; it would involve moving devices supporting a pixel hodoscope, silicon strip layers to define the path of particles just in front of the calorimeters, an electromagnetic calorimeter and a radiator structure to receive different detecting media like scintillators or gas chambers. The electronics will be adapted to beam structure, cooling and other services.