Dresden 2013 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 69: Kalorimeter 1

T 69.8: Vortrag

Montag, 4. März 2013, 12:45–13:00, GER-052

Time Structure of Hadronic Showers in a Tungsten-RPC Calorimeter — •Marco Szalay — MPI für Physik - München — TU München

A TeV-scale linear e⁺e⁻ collider is being developed as a next-generation project at the energy frontier of particle physics, providing excellent capabilities to study the recently discovered boson at the LHC, for precision SM studies and for the search for new physics. The detectors being developed for such a machine rely on highly granular calorimeters and particle flow algorithms to achieve an unprecedented jet energy reconstruction. Several technologies for imaging hadronic calorimeters are being investigated by the CALICE collaboration. Since hadronic showers have an intrinsic time structure with prompt and delayed components, the study of the sensitivity of different readout technologies to this structure is important to assess the timing capabilities of these detectors.

This presentation focuses on the commissioning, data taking and analysis of the FastRPC setup, a gaseous detector based on RPC with analog readout. Its goal is to measure the time development of hadronic showers in a tungsten calorimeter. The information on late time components can improve simulation codes and the understanding of shower physics in tungsten. It also permits to study the time resolution achievable with such a calorimeter to evaluate the effects of backgrounds on the event reconstruction. Results have been compared with those of T3B, a twin experiment based on scintillating tiles coupled to SiPMs, to disentangle detector artifacts from shower features.