Pixel chamber: a solid-state active-target for 3D imaging of charm and beauty

Mulliri, A.;Arba, M.;Bhattacharya, P.;Casula, E.;Cicalo, C.;De Falco, A.;Mager, M.;Marras, D.;Masoni, A.;Musa, L.;Siddhanta, S.;Tuveri, M.;Usai, G.

2021-01-01

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Abstract

The aim of the pixel chamber project is to develop the first "solid-state bubble chamber" for high precision measurement of charm and beauty. In this paper we will describe the idea for the first silicon active target conceived as an ultra-high granular stack of hundreds of very thin monolithic active pixel sensors (MAPS), which provides continuous, high-resolution 3D tracking of all of the particles produced in proton-silicon interactions occurring inside the detector volume, including open charm and beauty. We will also discuss the high-precision tracking and vertexing performances, showing that the vertex resolution can be up to one order of magnitude better than state-of-the-art detectors like the LHCb one.