Preliminary results of 3D-DDTC pixel detectors for the ATLAS upgrade

Details Preliminary results of 3D-DDTC pixel detectors for the ATLAS upgrade Preliminary results of 3D-DDTC pixel detectors for the ATLAS upgrade

2009-10-20

arxiv.org/abs/0910.3788v1

Proceeding of Science PoS(RD09)032 (2009)

Physics

Instrumentation and Detectors

8 pages, 8 figures, presented at RD09 - 9th International Conference on Large Scale Applications and Radiation Hardness of Sem

Scientific paper

3D Silicon sensors fabricated at FBK-irst with the Double-side Double Type Column (DDTC) approach and columnar electrodes only partially etched through p-type substrates were tested in laboratory and in a 1.35 Tesla magnetic field with a 180GeV pion beam at CERN SPS. The substrate thickness of the sensors is about 200um, and different column depths are available, with overlaps between junction columns (etched from the front side) and ohmic columns (etched from the back side) in the range from 110um to 150um. The devices under test were bump bonded to the ATLAS Pixel readout chip (FEI3) at SELEX SI (Rome, Italy). We report leakage current and noise measurements, results of functional tests with Am241 gamma-ray sources, charge collection tests with Sr90 beta-source and an overview of preliminary results from the CERN beam test.

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