The purpose of this prototype is to gain experience in using new read out technics for a possible hadronic calorimeter ( ILD calorimeter ) of the future linear collider ( ILC ). It is also the predessesor of a larger prototype (internally called 'physics prototype'), which is makeing exessively use on the new readout scheme for SiPM readout.
The design of the MiniCal is simple. The MiniCal is a sampling calorimeter with 28 steel absorber plates. Each plate has a thicknes of 20 mm. The plates are stacked with a gap of 10 mm holding place for cassettes of 9 plastic scintillators with different readout technics. The plate sizes are 30x30 cm2. The scintillator tiles have a size of 5x5 cm2.
The scintillator tiles are read out with three different detectors:
- Photomultipliers - 2 Hamamatsu MAPM reading out up to 13 layers
- APDs - 33 pieces of 3x3 mm Hamamatsu special types reading out up to 13 layers
- SiPMs - 109 pieces of 1x1 mm Pulsar types (1024 pix) reading out up to 11 layers