The Scintillator Tile hadronic Calorimeter prototype, R&D studies and construction plans
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The CALICE Tile HCAL prototype is described in detail.

Optimization studies are presented for scintillator tiles with WLS fiber
light collection and SiPM photodetectors (more details in poster
session) positioned directly on tiles. SiPMs are tiny devices and
practically do not introduce a dead space. On the basis of these studies
tile-WLS fiber-SiPM systems with about 25 photoelectrons for MIP in
0.5x5x5 cm**3 tiles have been constructed.

The calorimeter cassettes design, the photodetector bias voltage supply,
front end signal readout and planned quality test procedures are presented.
A hadron calorimeter prototype with about 8000 scintillator cells of
different tile sizes (3x3 to 12x12 cm**2) is being constructed now  to
collect data in hadron and electron test beams needed to verify
experimentally the Energy Flow reconstruction method.