Speaker
Dr
Ozhan Koybasi
Description
For the luminosity upgrade of the LHC, CMS is starting ambitious and diversified sensor research and development projects. The increased particle fluence implies more stringent requirements on the radiation hardness; the increased occupancy requires higher granularity; the need of moderating the material budget while increasing the number of readout channels suggests the use of thinner detectors. Different silicon bulk materials and detector concepts are investigated. Two 6-inch multi-project wafers with two different companies are in the planning, containing dedicated strip, short strip and pixel structures; the materials under investigation are floatzone n-type, floatzone p-type, Magnetic Czochralski n- and p-type, with different thicknesses. Other projects are studying n- and p-type epitaxial structures, as well as non-planar methods like Silicon-On-Insulator and 3D structures. In parallel with the research on the sensors, different connection concepts are evaluated, especially relevant for the short strip detectors.
