Münster 2017 – scientific programme

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T: Fachverband Teilchenphysik

T 93: Detektorsysteme 3 (Kalorimeter, Myonsysteme)

T 93.3: Talk

Wednesday, March 29, 2017, 17:15–17:30, JUR 372

Time Measurements with the CALICE Analog Hadronic Calorimeter — •Christian Graf for the CALICE-D collaboration — Max-Planck-Institut für Physik, München, Deutschland

The Particle Flow concept (PFA) gives a possibility to enhance the jet energy resolution of multi purpose detectors at future e⁺e⁻ colliders as ILC or CLIC. One requirement for a detector that is optimized for the Particle Flow approach is a calorimeter with a high spatial resolution.

The CALICE Collaboration is developing concepts of highly granular calorimeters. For this purpose, prototypes with different technologies are designed and investigated in various test-beam campaigns. One of these detector concepts is the Analoge Hadronic Calorimeter (AHCAL), which is based on scintillators and Silicon Photomultipliers. The signals are processed by an ASIC that provides the signal amplitude as well as a time measurement. The time information may help to improve the performance of the Particle Flow algorithm, enhance the energy reconstruction and reduce the background. Furthermore, the time structure of hadronic showers can be investigated.

This talk presents an analysis of the time measurements taken in a test-beam run at CERN. Emphasize will be put on the time calibration.