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HK: Fachverband Physik der Hadronen und Kerne

HK 7: Instrumentation I

HK 7.3: Talk

Monday, March 14, 2016, 14:45–15:00, S1/01 A2

On drift fields in CMOS Monolithic Active Pixel Sensors* — •Michael Deveaux for the CBM-MVD collaboration — Goethe-Universität, Frankfurt

CMOS Monolithic Active Pixel Sensors (MAPS) combine an excellent spatial resolution of few µ m with a very low material budget of 0.05% X₀. To extend their radiation tolerance to the level needed for future experiments like e.g. CBM, it is regularly considered to deplete their active volume.
We will discuss the limits of this strategy accounting for the specific features of the sensing elements of MAPS. Moreover, we introduce an alternative approach to generate the drift fields needed to provoke a faster charge collection by means of doping gradients.
*supported by BMBF (05P12RFFC7), HIC for FAIR and GSI.