Simulation and first beam test of a single-sided two-dimensional detector using pMOS pixels

A strip-like two-dimensional readout single-sided detector using pMOS pixels is being developed at KEK, as part of the R&D for the BELLE experiment. It may be used in upgrades of the vertex detector. The pMOS pixel is composed of a double drain pMOS transistor, providing direct amplification on site, implanted in the n-well collecting electrode of the detecting silicon pin diode. We first briefly review the concept and principle of the pMOS pixel detector, before presenting simulation and test performed on the prototypes with a beam of minimum ionizing particles.