Studies for a Scintillator Tile Hadron Calorimeter for the Linear Collider Detector
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An overview is given on research and development studies towards a
scintillator based hadron calorimeter with high cell granularity and
analogue readout.
We report upon measurements with a small scintillator/iron sandwich
prototype with 117 tiles exposed to the DESY electron test beam. The
scintillating tiles of 5 x 5 x 0.5 cm^3 are read out via inserted
wavelength-shifting fibers.
As photodetectors three different types were used in separate
calorimeter test series: Multianode Photomultipliers (MAPMs), Avalanche
Photodiodes (APDs) and Silicon Photomultipliers (SiPMs).
The performance of the SiPM and APD equipped prototype is compared with
the results from the MAPM readout.
Detector resolution, linearity, calibration and stability are discussed,
and the energy response is compared with detailed simulations.
Based on this experience, we present plans for the construction of a 1 m^3
prototype calorimeter for hadronic test beams, where emphasis is put on
the capability to reconstruct the energy of individual particles in narrow
jets.