Measurements of 3D Silicon Strip Sensors by two Manufacturers
Proceedings of 9th International Conference on Large Scale Applications and Radiation Hardness of Semiconductor Detectors — PoS(RD09)(2009)
Abstract
The increase of the radiation dose at the luminosity upgrade of the LHC (sLHC) necessitates the development of novel tracking detectors. Among these, 3D silicon detectors constitute a promising option. By etching columnar electrodes of both doping types into the sensor, the distance for depletion and charge collection is decoupled from the sensor thickness and can be considerably smaller than in standard planar sensors. Two of the main effects of radiation damage in silicon detectors (increasing depletion voltage and trapping) can be significantly reduced. Silicon strip detectors in 3D-DDTC (double-sided, double type column) design produced by FBKIRST (Trento, Italy) and CNM-IMB (Barcelona, Spain) have been measured in a test beam at the CERN SPS. Important properties like spatially resolved charge collection and detection efficiency were investigated.
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Key words
3d silicon strip sensors,measurements
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