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Pseudorapidity dependence of long-range two-particle correlations in pPb collisions at sqrt(s[NN]) = 5.02 TeV

ArXiv 1604.05347 (2016)
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Search for lepton flavour violating decays of heavy resonances and quantum black holes to an e-mu pair in proton-proton collisions at sqrt(s) = 8 TeV

ArXiv 1604.05239 (2016)
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Evidence for exclusive gamma gamma to W+W- production and constraints on anomalous quartic gauge couplings in pp collisions at sqrt(s) = 7 and 8 TeV

ArXiv 1604.04464 (2016)
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Search for new phenomena in final states with large jet multiplicities and missing transverse momentum with ATLAS using s√=13 TeV proton--proton collisions

Phys Lett B (2016)

Authors:

AJ Barr, C Gwenlan
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Charge collection studies in irradiated HV-CMOS particle detectors

Journal of Instrumentation IOP Publishing 11:4 (2016) P04007

Authors:

A Affolder, M Andelković, K Arndt, R Bates, A Blue, Daniela Bortoletto, C Buttar, P Caragiulo, V Cindro, D Das, J Dopke, A Dragone, F Ehrler, V Fadeyev, Z Galloway, A Gorišek, H Grabas, IM Gregor, P Grenier, A Grillo, LBA Hommels, Brian Huffman, P Phillips, K Kanisauskas, Richard Plackett, Ian Shipsey, L Vigani, J John, Stephen McMahon, R Nickerson, C Kenney, G Kramberger, Z Liang, I Mandić, D Maneuski, M Mikuž, D Muenstermann, I Perić, F Rubbo, J Segal, A Seiden, W Song, M Stanitzki, D Su, C Tamma, R Turchetta, J Volk, R Wang, M Warren, F Wilson

Abstract:

Charge collection properties of particle detectors made in HV-CMOS technology were investigated before and after irradiation with reactor neutrons. Two different sensor types were designed and processed in 180 and 350 nm technology by AMS. Edge-TCT and charge collection measurements with electrons from 90Sr source were employed. Diffusion of generated carriers from undepleted substrate contributes significantly to the charge collection before irradiation, while after irradiation the drift contribution prevails as shown by charge measurements at different shaping times. The depleted region at a given bias voltage was found to grow with irradiation in the fluence range of interest for strip detectors at the HL-LHC. This leads to large gains in the measured charge with respect to the one before irradiation. The increase of the depleted region was attributed to removal of effective acceptors. The evolution of depleted region with fluence was investigated and modeled. Initial studies show a small effect of short term annealing on charge collection.
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