Difference: RadiationSimulationPublicResults (17 vs. 18)

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where V is the sensor volume, Φ is the fluence, Lint is the integrated luminosity, t is time, T is temperature and the sum is over all time periods i. The values for the various parameters can be found in [2] and Φ/Lint is fit to the data. The error bars from the leakage current extraction are dominated by a conservative 10% uncertainty, accounting for the variation in the bias voltage at full depletion. Uncertainties due to the annealing model (0.1%) and data fit (0.5%) are subdominant. Note that the uncertainty in the parameters of the Hamburg annealing model are about 5% [2], but the quoted uncertainty is the impact of those uncertainties on the extracted value of Φ/Lint.

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The Pythia 8 simulation uses the MSTW2008LO PDF with either the A2 [3] or A3 [4] minimum bias tunes. A description of the ATLAS FLUKA simulation framework can be found in [5]. The ATLAS detector geometry models are not identical between Geant 4 and FLUKA - the former uses the full geometry model employed by the standard ATLAS Monte Carlo production system [1] while the latter uses a simplified standalone geometry. The predictions are mirrored for +/- |z|, so there is symmetry by construction. Only Monte Carlo statistical uncertainties are shown for the simulation predictions. Due to the more complex geometry used by Geant 4, the statistical uncertainties are enhanced (from the tilt of the IBL staves in φ); the FLUKA simulation also uses a factor of 5 more events than the Geant4 prediction.

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The Pythia 8 simulation uses either the A2 minimum bias tune [3], or the A3 tune [4]. A description of the ATLAS FLUKA simulation framework can be found in [5]. The ATLAS detector geometry models are not identical between Geant 4 and FLUKA - the former uses the full geometry model employed by the standard ATLAS Monte Carlo production system [1] while the latter uses a simplified standalone geometry. The predictions are mirrored for +/- |z|, so there is symmetry by construction. Only Monte Carlo statistical uncertainties are shown for the simulation predictions. Due to the more complex geometry used by Geant 4, the statistical uncertainties are enhanced (from the tilt of the IBL staves in φ); the FLUKA simulation also uses a factor of 5 more events than the Geant4 prediction.

 

[0] GEANT4 Collaboration, GEANT4: a simulation toolkit, Nucl. Instrum. Meth. A 506 (2003) 250.

 
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