Author/Authors :
Besson، نويسنده , , Auguste and Claus، نويسنده , , Gilles and Colledani، نويسنده , , Claude and Degerli، نويسنده , , Yavuz and Deptuch، نويسنده , , Grzegorz and Deveaux، نويسنده , , Michael and Dulinski، نويسنده , , Wojciech and Fourches، نويسنده , , Nicolas and Goffe، نويسنده , , Mathieu and Grandjean، نويسنده , , Damien and Guilloux، نويسنده , , Fabrice and Heini، نويسنده , , Sebastien and Himmi، نويسنده , , Abdelkader and Hu، نويسنده , , Christine and Jaaskelainen، نويسنده , , Kimmo and Li، نويسنده , , Yan and Lutz، نويسنده , , Pierre and Orsini، نويسنده , , Fabienne and Pellicioli، نويسنده , , Michel and Scopelliti، نويسنده , , Emanuele and Shabetai، نويسنده , , Alexandre and Szelezniak، نويسنده , , Michal and Valin، نويسنده , , Isabelle and Winter، نويسنده , , Marc، نويسنده ,
Abstract :
The physics programme at the International Linear Collider (ILC) calls for a vertex detector (VD) providing unprecedented flavour tagging performances, especially for c-quarks and τ leptons. This requirement makes a very granular, thin and multi-layer VD installed very close to the interaction region mandatory. Additional constraints, mainly on read-out speed and radiation tolerance, originate from the beam background, which governs the occupancy and the radiation level the detector should be able to cope with. CMOS sensors are being developed to fulfil these requirements. This report addresses the ILC requirements (highly related to beamstrahlung), the main advantages and features of CMOS sensors, the demonstrated performances and the specific aspects of a VD based on this technology. The status of the main R&D directions (radiation tolerance, thinning procedure and read-out speed) are also presented.
Keywords :
Material budget , Thinning , Read-out speed , iLC , Radiation hardness , CMOS , Vertex detector
