Project P2

 

Hybrid Pixel Detectors

Participants: DESY, PSI, UHH, Micron; ESR: 2 × 3 yrs (contact person: T.Rohe, PSI)

Tracking at the inner most regions of the LHC and SLHC and photon research at X-FEL.

The performance of the presently installed pixel detectors closest to the LHC beam will degrade considerably after a few years due to radiation damage. Also the newly developed X-ray sources, in particular the European X-FEL, pose unprecedented requirements in terms of radiation hardness and instantaneous photon densities. Based on existing and future (see project P3) measurements of the macroscopic radiation damage, this project aims at an optimized design of the pixel sensor. The corresponding read-out electronics, which is an integral part of a pixel detector system, is addressed in project P9.

The project focuses on cost effective hybrid pixel detectors using "standard" components. A key part will be the careful modeling of the sensor response as a function of the radiation fluence and annealing scenario. The work will use commercial solid state device simulation tools as well as specifically developed programs to simulate signal shapes. Lab measure­ments on prototype detectors and test experiments in photon and particle beams (e.g. at DESY and CERN) will allow to study and improve the performance under realistic conditions.