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2013

Radiation damage in the LHCb Vertex Locator

Affolder, A., Akiba, K., Alexander, M. et al.

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The LHCb Vertex Locator (VELO) is a silicon strip detector designed to reconstruct charged particle trajectories and vertices produced at the LHCb interaction region.

During the first two years of data collection, the 84 VELO sensors have been exposed to a range of fluences up to a maximum value of approximately $\rm{45 \times 10^{12}\,1\,MeV}$ neutron equivalent ($\rm{1\,MeV\,n_{eq}}$).
At the operational sensor temperature of approximately $-7\,^{\circ}\rm{C}$, the average rate of sensor current increase is $18\,\upmu\rm{A}$ per $\rm{fb^{-1}}$, in excellent agreement with predictions.
The silicon effective bandgap has been determined using current versus temperature scan data after irradiation, with an average value of $E_{g}=1.16\pm0.03\pm0.04\,\rm{eV}$ obtained.

Radiation damage in the LHCb Vertex Locator · Around

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Then

The CMS Tracker Collaboration, C. Barth, Evolution of silicon sensor characteristics of the CMS tracker
2011
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The CMS Tracker Collaboration, C. Barth, Evolution of silicon sensor characteristics of the CMS silicon strip tracker
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The LHCb VELO Group, Perfomance of the LHCb Vertex Locator
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A. Chilingarov, Generation current temperature scaling
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Y. Wang, A. Neugroschel, and C. T. Sah, Temperature Dependence of Surface Recombination Current in MOS Transistors
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