Particle detector capable of separating in-time signals from out-of-time signals

A silicon particle detector comprising:

• an absorption region capable of creating electric charges as a response to a particle passing therethrough,
• a first and a second electrode on opposite sides of the absorption region, one of said first and second electrode being an anode and the other of said first and second electrode being a cathode, wherein the first electrode is formed by a plurality of pads arranged in array, neighboring pads being separated from each other by a gap formed by material of the absorption region, and
• a plurality of multiplication layers capable of avalanche-multiplying the electric charges created in the absorption region (10), each of the multiplication layers (40) being arranged under a respective pad and interposed between the respective pad and the absorption region,
• wherein each multiplication layer is surrounded by a respective protection ring formed by material of the pad the protection ring being laterally interposed between the multiplication layer and the absorption region.